Competition and Awakening - A DDLC Story

[Railgun-sama 528]

Here's another one! This is actually the third in a series of stories (this is a continuation of this story here:)

centered around DDLC, commissioned by the same client. I would've posted them all in the same thread, instead of individually like this, but they all have wildly different themes and tags, with the first one and this one containing messing. This one is actually solely focused on messing, so if that's not your cup of tea, this probably isn't the story for you. Otherwise, I hope you enjoy!
 

Competition and Awakening

Natsuki walked along the darkened streets of the neighborhood, following closely behind Sayori as the two made their way back to her place. She found herself spending more and more time over at Sayori’s place lately. Not only was it a nice change of pace from her usual homelife, but she found she quite enjoyed Sayori’s company.

On top of that, the two had recently discovered they shared somewhat similar interests. Namely, both of them were into experimenting with certain bodily needs. In particular, desperation, wetting, and messing. Though, in fairness, Natsuki herself had mostly been interested in desperation and wetting up until recently, and even then she was more interested in witnessing it than being an active participant.

It wasn’t until the fateful slumber party several days ago that her interests had shifted somewhat, no doubt helped along by Sayori, who was shuffling along ahead of her. 

Sayori, as it turned out, was well-versed in wetting and desperation, and had experimented with it extensively, even before the sleepover. However, on that night, she and Natsuki had managed to rope the girls into a holding contest, and it had ended with her losing control of more than her bladder. It was this accident that had shifted her interests more towards messing herself, and she had subsequently confessed her interests to Natsuki, and even roped her into them once or twice.

Earlier today was a good example, where Natsuki had just nearly missed Sayori wetting herself at the park. The images of Sayori standing in the park bathroom with sopping wet bottoms and a substantial puddle was still clear in her mind, and she couldn’t help but draw her attention to Sayori’s behind as they walked.

Funnily enough, though, Sayori looked like she was shuffling awkwardly, and Natsuki immediately narrowed her eyes.

“Hey, Sayori, are you okay?”

“O-oh yeah, of course, I’m fine!” Sayori smiled, though her expression was stiff and her face was pale. 

Natsuki didn’t buy it for a second, “I can tell you’re uncomfortable. You’re holding it, aren’t you?”

“You caught me,” Sayori gave up, a little too easily in Natsuki’s mind, “I kind of really have to poop.”

“Well, we’re almost at your house. You’re not gonna shit yourself, right?” Natsuki teased.

“Natsuki!” Sayori blushed, “N-no, I’ll be fine!”

The two continued to walk onward and Natsuki could tell Sayori was teasing her. While her walk had been stiff and awkward before, it was clear Sayori was really playing up how badly she had to poop. She was shuffling stiffly with her hand against her rear, like she was literally holding it back. She was more doubled over than she was before, and she was rubbing her stomach.

The two finally reached Sayori’s house, and Sayori hurried up to the front door. As she struggled with the keys, she let out a gasp, and doubled over. She let out a loud fart before she felt her bowels contract, and suddenly a lump began forming in her shorts. It grew as she felt herself totally and completely lose control, her body pushing out all her poop into her panties. 

Natsuki got a full view as she watched Sayori mess herself. She could hear the distinct crackle of Sayori filling her panties as the stench struck her immediately, and she took a step back. Sayori let out another gasp, and suddenly a hissing accompanied the sound of her messing as a wet spot spread across the back of Sayori’s shorts. Pee shot out between her legs and splattered onto the tiles below, and Sayori fruitlessly tried to clamp down on the flow as she wet herself too.

When she was done, she let out a relieved sigh and turned to Natsuki, face red.

“Sorry, I guess I couldn’t make it after all, hehehe,” Sayori scratched the back of her head awkwardly.

Natsuki narrowed her eyes and crossed her arms, “That was on purpose, wasn’t it?”

“What? No way! I was really holding it in!” Sayori tried, “I’ve needed to go for a while, actually.”

“Nice try,” Nastuki replied slyly, “But if that were true, you could’ve just went at the park earlier when you wet yourself. Unless you put it off, which still would’ve been on purpose.”

Sayori slumped her shoulders and lowered her gaze, “Alright, fine, you got me.”

Suddenly, the sound of a shutter went off, and Sayori’s eyes widened. She looked up to see Natsuki holding up her phone and smiling mischievously. 

“Did… did you just take a picture of me?” Sayori asked, blushing.

“Sure did, you look funny standing there with your pants a total mess,” Natsuki smirked. She held up her phone to show Sayori the photo of her, standing there with a noticeable lump in her shorts and a dark patch with wet streaks still running down her legs, “I got one of you in the park earlier too, when you wet yourself.”

“That’s so embarrassing,” Sayori blushed even more, “And on top of that, I can’t believe I wet myself twice.”

“Wait, that wasn’t on purpose?” Natsuki asked.

“No, I just wanted to have a little fun and I really had to poop, but the wetting was accidental. I guess my bladder was still weak from earlier and I lost control,” Sayori admitted, pulling at the legs of her shorts and making an disgusted face, “I didn’t expect to wet myself, this is the worst.”

“Why are you complaining?” Natsuki asked, “I mean, you literally just said you shit yourself on purpose, but suddenly wetting yourself is a no-go?”

“W-well, I like holding it in, but actually wetting myself always felt a bit icky to me. Also it’s a pain to clean up. Whereas, as long as it’s not too loose, poop’s a bit easier to deal with.”

Natsuki wrinkled her nose, “I dunno, I think messing’s worse, personally.” 

“Have you tried it yet?” Sayori asked, “Messing, I mean?”

Natsuki blushed. After she had initially discussed the topic with Sayori, she thought back to the day of the slumber party and got curious. Sayori was far more adventurous than Natsuki when it come to experimentation, so she had rather quickly taking to experimenting with messing, and had encouraged Natsuki to experiment.

“I-I have,” Natsuki admitted, recalling the experience with no shortage of embarrassment.

“Oh, now you’re the one getting embarrassed,” Sayori smiled, “You enjoy teasing me and taking photos, but it seems like I can handle this stuff better than you.”

“T-that’s only because I’m more into watching than doing!”

“Oh really? You seemed pretty into the holding contest at the sleepover.”

“I just got excited that I’d get to see everyone wet themselves, and I was determined to win,” Natsuki pointed out defensively. She then puffed out her chest with pride, “Which I did, by the way.”

“You only won because both me and Monika had to poop too,” Sayori pointed out.

“That was your own fault, that wasn’t supposed to be part of the competition. Besides, Monika didn’t even say she had to poop.”

Sayori places a finger on her chin and nodded, “I guess that’s true. But if poop had been part of the competition, I’m pretty sure I would’ve won.”

“How are you so sure? You didn’t even realize you were into it until the sleepover anyway, right?” Natsuki pointed out.

“That’s true, but I have experience holding it in general, and I’m more comfortable experimenting around with this stuff than you. You just like to watch, right?”

“W-well, yeah, but…” Natsuki began.

“So clearly if we did anything embarrassing involving messing ourselves, I’m pretty confident,” Sayori concluded.

“J-just because you’re more used to it doesn’t mean I wouldn’t win!”

“Okay. Why don’t we just find out, then,” Sayori suggested simply.

“What, like another holding contest, but with poop?” Natsuki asked.

“No,” Sayori shook her head, “A regular holding contest would just be boring. Besides, it has to be embarrassing, right? So why don’t we have a competition where we see who can mess themselves in the riskiest place?”

“T-that’s…” Natsuki began. She was about to say embarrassing, but then she realized the whole point of the contest was to prove that she could handle being embarrassed. Instead, she shifted gears, “H-how would we even do a contest like that? Are we just going to follow each other around and watch?”

“I think that would limit it too much,” Sayori replied, “So why don’t we take pictures? We’ll find risky places to mess ourselves, and then take pictures of us doing it! Whoever does it in the riskiest place wins the contest!”

Natsuki paused. She had let her competitive side get the better of her, but now she was having serious second thoughts. Still, even now, it was difficult for her to admit defeat, and part of her still wanted to prove Sayori wrong.

“I’m not so sure about that,” Natsuki finally replied.

“Oh come on, it’ll be fun! Besides, you have pictures of me, so isn’t it only fair that I get some pictures of you messing yourself too?” Sayori smiled teasingly, “Or are you too embarrassed for that too?”

Natsuki puffed out her cheeks defiantly, “Fine, I’ll do it!” 

“Great!” Sayori smiled.

“Let’s discuss the details inside, though. We need to get you and this mess cleaned up. We’ve been standing out here for a while, and it’s starting to smell.”

Natsuki pointed to Sayori, who was still standing there with her shorts stained with urine and her panties filled with her earlier mess. Back on the receiving end of the teasing, Sayori suddenly became self-conscious that she had just been standing around at her front door like that.

Blushing, she nodded in agreement, “Good idea.”

***

Later that night, Natsuki found herself lying on her bed, staring up at her ceiling. Her heart was racing and her mind was filled with thoughts on the contest she had agreed to. After Sayori had gotten cleaned up and they had dinner, they returned to the subject, and Sayori clarified that by “riskiest place” she meant a situation where it would be super embarrassing to get caught. That meant, if Natsuki really wanted to win the contest, she’d have to come up with a more embarrassing place than Sayori.

Of course, this meant that Natsuki would have to mess herself in public somewhere, and seeing as she had just started experimenting, she had only ever messed herself once, and naturally it had been in the privacy of her own home.

Natsuki struggled to come up with a situation where she could mess herself where she could get caught, but where she could also get away with it. The classroom wouldn’t work. She’d get caught almost immediately. She could go for a walk around the neighborhood or even at the park at night without a lot of people around, but considering Sayori was perfectly fine messing herself at her front door on purpose, Natsuki figured this didn’t really count either.

I just can’t really think of a good place where I won’t get caught immediately, and I can hopefully hide it.

As she wracked her brain for ideas, Natsuki found herself recalling her first experience with messing. It had been a relatively quiet day and she knew her father would be out of the house, so she planned that she wouldn’t poop all day. She had experimented a few times with holding it before, and found it much easier to plan around holding in her bowels than her bladder. It was almost an unconscious decision to just not poop, and it helped that she didn’t start feeling anything until after dinner.

As Natsuki felt the slightest pressure in her bowels, she was able to start her evening. She had picked out a lengthy manga to read, and her plan was to hold it until she made it through the entire series. She made sure to change into older clothes that she didn’t mind making a mess in, and started. At first the challenge was simple enough. Natsuki was feeling a slight nag to go, but outside of a few grumbles and gurgles from her stomach, it was a trivial matter to push the urge off and dive into the first book.

Natsuki finished volume one and went to grab volume two, when suddenly the pressure in her stomach shot up. She felt bloated and she clenched her butt to keep her poop contained. She relaxed and let out a fart by accident, but luckily that seemed to be where most of the pressure came from, and the desperate urge subsided.

Unfortunately, Natsuki couldn’t quite push the feeling back as she was reading the second volume, and was forced to sit stiffly, shuffling on her bed as she tried not to think about how full her bowels were becoming. Natsuki felt another sharp wave of pressure hit her and she clenched again, trying not to let it get to her as she finished off volume two and picked up three.

Her reading slowed down considerably as her desperation increased, and Natsuki found herself really struggling to hold it in. She clenched against the pressure as she felt her bowels twist and gurgle. Natsuki let out another fart to relieve some of the pressure, but she could still feel all her pent-up poop trying to push its way out. She clenched and struggled as she turned the page, her mind barely able to focus on the manga anymore.

It was clear to Natsuki at that point that she wasn’t going to make it through the entire series. She had definitely overestimated her ability to hold it, and just how quickly her urge to poop would grow from the nagging it was after dinner to full-on desperation. Still, Natsuki was determined to at least make it through volume 3.

She shuffled and clenched as she rubbed her stomach with one hand, trying desperately to make it until the end of the manga. Natsuki’s stomach protested with constant grumbles as she felt her poop pressing out against her asshole, and she was really worried she’d wind up letting it out right then and there. She fought back the desperation and skimmed more than read through the last of volume 3 before tossing it to her bed and standing up.

Immediately Natsuki doubled over as a sharp wave of pressure pushed out, and she was forced to clench and squirm just to not mess herself there. It would be too much of a hassle to clean up in her bedroom, so she wanted to at least make it to the bathroom. Natsuki hobbled her way into the hall and walked stiffly and awkwardly to the toilet.

As soon as she got there, the tempting sight of the toilet called to her, and as hesitant as Natsuki was to mess herself, she nearly caved. She wanted nothing more than to tear her panties down and finally relieve herself into the toilet. However, that would defeat the purpose of her having held it in so long, so she resisted the urge and squirmed there a few seconds longer before it finally happened.

She felt her muscles loosen and heard a distinct cracking sound of all her pent-up shit making its way out of her. She had been holding it for quite a while, so it pushed its way out quite quickly. She squeezed out the first turd and let out a quick fart before the next came quickly after. It smelled foul from her having held it in, but thankfully it was firm and not loose. 

Finally, Natsuki was done, and her newly emptied bowels still throbbed from having held it in so long. Despite that, however, the actual mass in Natsuki’s panties wasn’t as impressive as she had hoped. When Sayori had totally messed herself, she had let out quite a lot, and part of her was disappointed she had given in well before holding that much poop.

The cleanup had been somewhat gross, and Natsuki recalled hating the awful smell. Moreover, that had been the only time Natsuki had messed herself before accepting Sayori’s challenge. Now she was expected to not only mess herself, but do it somewhere public where she could get caught. 

Natsuki let out a sigh as her mind blanked. She checked the time and realized it was quite late, and decided that sleeping on it and brainstorming more tomorrow would be the better option. As she crawled into bed, her mind drifted to Sayori, and what kind of crazy ways she would wind up messing herself. 

Can I really outdo her? I mean, I got really competitive, but Sayori did it so openly earlier. I don’t know if I’ll be able to handle the embarrassment.

***

Over the next few days, Natsuki went about her business normally, but all the while she was still trying to think of places that would work for the competition. She headed down to the convenience store and thought about doing it there, but the restrooms were right next to the registers. She wouldn’t be able to get away with it without getting caught by the employees. Natsuki thought about going to the cafe or some restaurant, but she recalled the foul smell and on top of not thinking she’d be able to get away with it, she also didn’t want to put that on anyone trying to eat.

The weekend had passed her by and Natsuki still hadn’t figured out anything to do or anywhere to go for the contest. She found herself idly toying with her phone as she rolled idea after idea around in her head, only for her to strike each one out for one reason or another. 

Suddenly, she got a text from Sayori, and she opened it immediately.

“Can you talk right now? I have a few stories for you!”

“Sure,” Natsuki sent back, and within seconds Sayori called her.

“What’s up?” Natsuki asked, lying down on her bed to get more comfortable while the two talked.

“Well, as I mentioned, I have a few stories for you~,” Sayori sang, “I’ve been busy with our little competition lately.”

“A-ah,” Natsuki replied awkwardly, feeling even more anxious that she hadn’t managed to think of anything yet.

“Which do you want first, the stories, or the photos?” Sayori asked, before immediately interjecting, “Actually, I think it’ll be more fun if I tell you the stories first, and then send you the photos I took after.”

“Alright, go ahead.”

“So, the first was from Saturday. I peed before bed, but I didn’t poop the night before, so when my mom woke me up for breakfast, I really had to go. I could feel the pressure in my stomach as I made my way down to the kitchen. I walked right past the toilet too. I sat down as I watched my mom cook breakfast, but I knew I wasn’t going to be able to hold it much longer. So I let it out right there. It felt really good to finally poop, and I was doing it right there in the kitchen with my mom standing there. I was behind the counter and the smell was masked by the smell of my mom’s cooking, so I was able to get away with it. I was able to get a really nice photo too!”

Sayori immediately sent Natsuki a photo of her, standing and smiling at the camera teasingly as her mom cooked breakfast with her back turned. Sayori was turned to the side and showing off a prominent lump in her pajama shorts. 

“Wow, that’s definitely bold,” Natsuki agreed, “I couldn’t imagine doing that myself.”

“It’s definitely the bolder of the two, I think,” Sayori admitted.

“Wait, two? You have another one?”

“I did say I had more than one, didn’t I?” Sayori asked, “The second is a little more tame, though. This one was yesterday. I held it in all day and went to go see a movie by myself last night. I already really had to go by the time I shuffled to the theater, and I picked an older movie that had been out for a while, but I never saw. The theater wasn’t as crowded since it wasn’t new, but there were still some people in it. I sat down and watched, trying not to go for as long as possible. I held it in a lot, and I could really feel my stomach cramping up. I was aiming to totally finish it, but I would up only making it about 3/4ths of the way through before I just couldn’t hold it anymore. I totally messed myself right there. I have a photo from inside the theater, but it was dark so you can hardly see anything. The second photo when I was in the restroom is way better.”

Sure enough, Sayori sent over another two photos. The first one was a dark, blurry mess, but Natsuki could barely make out the shape of Sayori’s butt, with the shadow of a lump behind. The second photo was in a bathroom stall, with Sayori proudly displaying her ass with her skirt pulled up and her panties filled to the brim with her shit.

Natsuki’s interest in messing and wetting had always been a fascination to her out of finding the situations interesting, and somewhat comical, but something about this photo was different. She felt mesmerized, almost like she couldn’t take her eyes off of it. 

“That’s,” Natsuki struggled for the words, “That’s definitely a lot, you must’ve really had to go.”

“I did, I really lost control on that one,” Sayori admitted, “Anyway, do you have any stories for me?”

Suddenly, Natsuki was reminded of her difficulty coming up with ideas, and she stammered, “Uh, well, not exactly quite just yet.”

“Oh, did you have something planned?” Sayori asked.

“Y-yeah, of course, something big, that I’ve been preparing for, that’s all,” Natsuki lied through her teeth.

“Oh, I’m getting excited, I can’t wait to see what you have planned!”

Natsuki mentally chided herself as she continued idly chatting with Sayori. She had talked big, but in reality she had no ideas and was super nervous. Moreover, Sayori had already gotten a one-up on her, and Natsuki couldn’t imagine trying to pull of either of the messings Sayori managed. Still, where before her mind was a total blank, now she had some ideas and inspiration from Sayori. Natsuki slowly found herself formulating a plan she was fairly confident she could pull off, and as they talked, she actually found herself getting excited to execute it.

***

The next day was a holiday off of school, which suited Natsuki perfectly. The night before, as well as that morning, she made sure to pee, but didn’t empty her bowels in preparation for the day. She had a big breakfast and sat around her house, reading manga on her phone as she eagerly waited. She could feel a slight urge to poop already, but it was nothing at the level she couldn’t ignore. She kept checking the time, and when it was late enough in the morning, she grabbed her bag, which had a spare change of clothes, and set out.

As Natsuki walked to the station, she clenched and felt a pang in her bowels from holding it in. She wasn’t desperate, but it was definitely at the point she’d consider looking for a restroom. Of course, today, she had other plans. Natsuki pushed the urges back and walked along, a bit more stiff than normal, as she made her way down the street.

It wasn’t long before she finally arrived at her destination, the train station. It was a good thing, too, because she could feel the pressure in her bowels mounting, and her need was starting to get a bit urgent. Natsuki bought a ticket to one of the less populated stations, and stepped through the turnstiles onto the platform. She felt her stomach gurgle at her in protest as she walked straight past the restrooms and towards the train. Natsuki glanced at the cars, happy to see that they were mostly empty. This was why it had been important for her to wait until the late morning. It was after morning rush hour but before lunch, so the train was less full. There were still people on board, but it was far less likely for anyone to notice her, especially if she sat away from most of them.

Natsuki climbed into the train car and shuffled over to a seat in the corner, far from the other passengers. As soon as she sat down, a wave of pressure sent pain through her stomach, and she shuffled and clenched as she tried to hold herself. She let out a quiet fart and was grateful she was far enough away from the other passengers that they couldn’t hear or smell it. As all the poop pushed out against her asshole, Natsuki clenched up and looked around. 

She could go whenever she wanted, since holding it wasn’t a part of the contest, but she was really nervous all of a sudden. Moreover, she had picked a destination that would be relatively remote, so she could make her way to the bathrooms discreetly. The sooner she went, the longer she’d have to sit in her own mess, so Natsuki held on.

Soon, the doors closed and the train started moving. Natsuki pulled up her phone and started browsing idly to take her mind off of her urgent need. It barely worked. She could feel her stomach turning over as she felt all the pressure building up in her bowels. Natsuki normally went right before bed, so skipping her nightly bathroom break, and then not going that morning when she woke up, was really starting to catch up to her.

She could feel poop press out against her asshole, trying to force its way out, and she clenched up, shuffling in her seat as she glanced around nervously. Natsuki once again considered just going then, but she got incredibly nervous. She started worrying that the smell would eventually drift throughout the train car, or that someone would notice, so she kept holding it. 

As the train ride went on, however, Natsuki felt herself cramp up and she knew she was going to go sooner rather than later. She thought about how good it would feel to let go, and then snap a few pictures, but another part of her was mortified at the idea. Every time Natsuki  tried to build up the courage to just let it all out right then and there, she found her heart racing and scenarios of her getting caught played out in her mind. 

Natsuki was fighting a battle on two fronts. Her willpower to mess herself and her bodily urges. She was growing more desperate to poop and she tried to use that to power through and just let it out, but she couldn’t get past the mental block, and her body held fast. She clenched up even as the pressure mounted, and she let out another fart.

Natsuki bit her lip and looked at the time. They were nearly at the next stop. Defeated, she decided to give up and go to the restroom properly as soon as they reached the stop. It wasn’t the less busy station she had planned to get off on, but that wouldn’t matter, since she wasn’t going to mess herself in public anymore.

Natsuki felt her stomach churn and grumble in protest as the pressure sent another cramping wave through her body. She really had to poop. She clenched up and resolved to make it to the next station, but she was starting to get worried she wouldn’t. If Natsuki wasn’t absolutely desperate by this point, she’d find it funny that she came onto the train with the full intention of messing herself, and now she was desperately holding it to try not to.

By the time they got to the next station, Natsuki was relieved. She stood up carefully and made her way for the doors, but then stopped. She had resolved to do this, and if she couldn’t get past this mental barrier, than she would definitely lose the contest with Sayori. 

I should just go here. I’m already about to mess myself. I just have to do it!

Finding her newfound resolve, Natsuki returned to her seat, and felt her stomach rumble. She prepared to relax her muscles and let it all out, when suddenly a crowd of people piled onto the train car she was on. She let out a loud, smelly fart and blushed as she tried not to make eye-contact with any of them, and as soon as they got on, the train cars closed.

Oh no! I didn’t expect this train to be so busy! 

Natsuki was now trapped on a train car crowded with people, and she was on the verge of totally shitting herself. She clenched as hard as she could and rubbed her stomach as she watched the crowd of people horrified. They were a big enough crowd and close enough to Natsuki that if she lost control now, voluntary or not, they’d definitely notice. She bit her lip as she felt the painful pressure squeeze and press, and she shuffled in her seat frantically.

This is bad! If I do it now, they’ll definitely notice, but I really can’t hold it!

Natsuki checked her phone. She knew from the station near her house to her destination was a 30 minute ride, and this station was just about halfway between them. That still meant that she’d somehow have to hold it for fifteen more minutes. 

She tried to take her mind off her intense need to poop by browsing through manga on her phone, but her vision was blurry and her mind was clouded by her desperation. Natsuki sat stiffly as her face paled, sweat rolling down her forehead as she tried desperately to fight back against the mounting pressure. She could feel her poop pushing out against her asshole with each cramp of her stomach, and she gripped at her abdomen with her hand painfully as she clenched as hard as she could. As she did so, she let out another fart, a silent one that stank like hell, and blushed, hoping none of the other passengers connected it to her. 

Natsuki found herself panting and straining as she tried desperately to hold on. She kept checking her phone frantically, as though watching the minutes tick by would somehow make the train go any faster. She was clenching her butt so hard she could feel it starting to sweat as she desperately held in all the poop inside of her.

I can’t hold it, I’m definitely going to shit myself!

As the minutes ticked by, Natsuki got more and more worried that she’d lose control right then and there. Once again, she would’ve found it ironic that she was desperately trying to prevent the very thing she had gotten on the train to do, but she couldn’t even focus on that. All she could think about was how full her bowels were, and how much she needed to poop.

After what seemed like an eternity, Natsuki looked up and saw the other station come into view. Her stomach gurgled once more as though trying to make her trip at the finish line, but she clenched and held fast, and she managed to hold it despite the pain and cramping she was experiencing.

The train pulled into the station and the doors opened, and Natsuki very carefully got up. She more hobbled than walked over to the doors and took a few steps out onto the platform before she felt another fart escape her. She could tell she was out of time. She barely got out of sight of the train car and the many people on it, and looked around the platform. There were people waiting, but not many, and as she predicted, it wasn’t very busy that day.

Not having the strength to hold it anymore, and not wanting to even if she did, Natsuki felt herself unclench and relax, and suddenly she filled her panties with poop. She lost control suddenly, letting out a fart and then feeling all the shit she had tried to contain force it’s way out with almost blissful relief. She buckled her knees and hunched over to make herself seem small and looked around to see if anyone had noticed her, but it seemed like no one had yet. Natsuki continued filling her panties as she felt them sag. She felt some small turds fall out from between her legs and she blushed, feeling incredibly embarrassed and self-conscious. 

As soon as Natsuki was done, she quickly grabbed her phone and snapped a discreet, awkward photo of her accident and then rushed off to the nearest restrooms. She snapped another, clearer photo of herself once she was in the stall before turning her attention to the mess. She emptied the lump of shit in her panties into the toilet and grabbed her bag to clean herself up. Natsuki had brought plenty of wipes, a change of clothes, and a large, sealable airtight bag for her dirty clothes. She quickly changed out of her dirty clothes and wiped herself down thoroughly with the toilet wipes. She made sure she was fully clean before changing into a fresh pink skirt and clean panties before sitting down on the toilet again and reflecting on what she just did.

I can’t believe I actually shit myself in public.

Natsuki’s heart was racing, and her face was burning with embarrassment. At the same time, though, it was almost exhilarating, and the fact that she was pretty sure she had gotten away with it too made her feel a sense of excitement. Still, she was mortified about how close she had been to shitting herself in front of all those people. She couldn’t imagine committing and actually messing herself on the train.

Natsuki wasn’t sure how long she sat there before a sudden knocking snapped her out of it. Someone on the other side of the door was dancing from foot to foot and knocking on the stall doors frantically. Natsuki quickly flushed the toilet and stood up, making sure all evidence of her mess was down the drain or sealed away deep within her bag before stepping out of the stall.

The woman who was in line waiting gasped and nearly lunged past her as soon as she opened the stall door. Natsuki turned around just in time to see an older woman in a casual dress slam the door urgently. Natsuki paused for a brief minute and heard the woman groan as loud farts and plops came from inside the stall. She briefly wondered what would’ve happened if she had waited a little longer to open the door? Would that woman have lost control and filled her panties right outside of the stall?

Natsuki shook her head from the thoughts and washed her hands before leaving. There wasn’t much she was interested in at the area where she had gotten off the train. She had mostly picked it as her destination due to it being a lesser-used stop, so there wasn’t much here. Not to mention she wasn’t too keen on hauling around a bag filled with her poop-stained clothes. She was fairly confident the bags she brought would hold in the smell reasonably well, but there was no sense in tempting fate by prolonging her trip. So, Natsuki quickly headed back onto the train platform and boarded the next train back, and returned home to discreetly clean up her clothes and reflect more on her accident.

That evening, after dinner, all of the residual embarrassment from her day’s escapades had vanished, and she was actually getting excited to show Sayori the photos. She messaged her eagerly.

“Hey Sayori, I got a few photos and a story for you!”

“Oh! Very nice! What is it?” Sayori responded quickly. She seemed excited too.

Natsuki relayed the story about what had happened to Sayori, leaving out some of the details about her hesitation and deciding not to go through with actually messing herself. She then sent the photos over, and Sayori responded by sending over a laughing face.

“What’s so funny?” Natsuki texted back, pouting.

“Oh, nothing. Just that I had the same idea,” Sayori admitted, “I got on a train because they weren’t as crowded today. I held it all night so I really had to go. I thought I was going to lose it a few times while walking to the station. However, I managed to clench really hard and make it to the platform, but by then I wasn’t even sure I’d make it onto the train, let alone hold it until the train started moving. To my relief, the train came and I boarded, and managed to take a seat. I still had to clench really hard. I was sure I was going to poop myself before we got moving. I accidentally let out a fart and the passengers around me noticed, but I don’t think they realized I needed to poop, I think they just thought I was gassy. Anyway, I managed to hold it until the train started moving, but 15 minutes into the train ride, I realized I wasn’t going to make it much longer. I tried to move to a more remote area of the train, but the train was more full than I wanted it to be, so I really couldn’t get away from everyone. I wound up tucking myself into a corner and totally filling my panties. I think most passengers just thought I farted, but I totally shit myself. They probably figured it out when the smell didn’t go away, though. I was so embarrassed!”

Sayori then sent a few photos to Natsuki. Much like Natsuki, the first was a photo taken right after her accident, this time it was on the train, and Natsuki could even see people in the background, crinkling their noses at the smell. Another was still on the train, and showed off a bit more of Sayori’s full panties. Natsuki was astonished Sayori had gotten away with taking one like that. The last two were clearly taken in a toilet stall, where Sayori could better show off her messy panties and the full scope of her mess. Natsuki could definitely believe Sayori had been holding it all night, the load she let loose was impressive, and Natsuki wasn’t sure how Sayori’s panties managed to contain it all without it plopping out beneath her onto the floor of the train car.

“Oh wow, I can’t believe we had the same idea,” Natsuki replied, trying to come across as casual.

Of course, her true feelings were anything but. She couldn’t believe Sayori had come up with the same idea as her. Not only that, but between the two of them, it was clear that Sayori had executed the plan better, and the fact that she did it so openly and might have even gotten caught definitely meant that any lead that Natsuki hoped to claw back had slipped further and further behind.

Natsuki puffed out her cheeks as she kept idly chatting with Sayori. She needed a bigger plan. Something bold. Something that not even Sayori would think of. As Natsuki wracked her brain, her eyes fell upon the manga she had been reading before dinner, and her eyes lit up.

“Well, anyway, I should probably head to bed, we do have school tomorrow, after all,” Sayori pointed out.

“Yeah, have a good night, Sayori!” Natsuki replied.

“Good night!”

As soon as the call ended, Natsuki lept from her bed and crouched down on the floor, digging around underneath it before finding a box she had hidden there. She opened it up and some neatly folded clothes and accessories sat within. She rolled the plan around in her mind for a few moments and blushed before pulling out a few of the accessories and nodding to herself.

It was bold, but if Natsuki could pull this off, it would definitely be more daring than anything Sayori had done so far.

***

It took Natsuki a few days to get ready, and in that time, Sayori hadn’t sent her any more stories or photos of messings for the contest. On the one hand, Natsuki was grateful. It gave her chance to prepare without falling further behind in the competition. On the other hand, Natsuki was worried. She didn’t know if Sayori was struggling for ideas, or if she was preparing for something big, and if it turned out to be the latter, then Natsuki was afraid whatever she came up with would more than match Natsuki’s own idea.

Now, she was sitting in her last class, eagerly waiting for the final bell to ring. She was already starting to feel a slight nagging from her bowels, and she was hoping the subsequent walk to the station and the train ride would go quickly, in case any sudden urges struck her. Natsuki’s heart raced as she stared up at the clock, and her mind kept darting to the supplies she had tucked away in her bag.

As soon as class was over, she grabbed her bag and practically bolted out of the classroom. On her way to the front entrance, however, she ran into Monika, who called out to her with a friendly, “Natsuki!”

Natsuki wanted to get going as soon as possible, especially since she could feel her urge to poop growing slowly as her stomach gurgled, but she stopped anyway.

“Hey Monika, what’s up?” Natsuki asked, somewhat hurried.

“I was just looking for you, club’s canceled today, since Yuri and Sayori couldn’t make it,” Monika beamed, “But I wanted to ask if you want to come with me to the mall to pick up some stuff, and I was thinking about getting Yuri a gift.”

“Oh, well, I’m actually-” Natsuki paused. She wanted to get moving on her plan, but something was weird about what Monika said, “Wait, a gift? But isn’t Yuri’s birthday in December?”

“O-oh, yeah, well,” Monika looked away, stammering awkwardly, “There was actually- uh, well, I guess I can talk to you later.”

“Y-yeah, sorry, I have something important to take care of,” Natsuki apologized. 

“Oh, no worries!” Monika smiled, waving her hand dismissively, “I did kind of ask you last minute. We’ll catch up some other time!”

Monika was acting strange, and Natsuki’s curiosity was piqued, but she had been building up the nerve for her messing plan all day, and she couldn’t just pivot now. She’d have to talk to Monika about it later.

As soon as they said their goodbyes, Natsuki sprang back into action. She changed her shoes at the front of the school and quickly made her way down the street and over to the nearby train station. She felt her stomach, gauging how urgent her need to poop was, and gratefully she didn’t have to go that bad yet. She’d have plenty of time to make it to her destination. Natsuki swiped her train pass and made her way over to the train platform, where she boarded a crowded train. Natsuki would’ve preferred the luxury of sitting down, but she was heading into the Akihabara. There was no way the train wouldn’t be crowded.

As Natsuki stood there, shuffling slightly as she pushed her need to poop to the back of her mind, she took a deep breath and tried to calm her racing heart. She reached into her bag and pulled out a manga to read on the train, and tried not to think about how embarrassing what she was about to do would be.

It’s for the competition, after all!

Natsuki felt one or two spikes of pressure from her bowels as her urge to poop grew, and she was forced to clench and shuffle around to avoid letting out an embarrassing fart in such a crowded train, but eventually she made it to her destination. She stepped off the train and looked around for the restrooms.

Of course, Natsuki wasn’t there to poop. To give up at this point would be such an anticlimax, and Natsuki had been building up her nerves for this all day. Instead, as soon as she was in the stall, she reached into her bag and pulled out some vibrant-colored clothes. She began changing, slipping off her school uniform and neatly folding it and placing it in her bag. She then began dressing herself in the outfit she had tucked away. It was a frilly red dress with black trim and long black thigh high socks. She then slipped on a wig of long blue hair and a pair of fake eyeglasses. It was a cosplay of a relatively popular character from the series that had gotten all of this mess started at the slumber party. 

After she changed, Natsuki exited the stall and looked up into the mirror, fixing her wig and putting a medical mask over her face to hide her identity. The cosplay was pretty far removed from what she normally went for, both in terms of her normal style, as well as other cosplays she’s done in the past, but that was the point. Natsuki was almost unrecognizable.

With a newfound air of confidence and anonymity, Natsuki walked out of the restrooms and onto the bright, bustling streets of Akihabara. She could feel her outfit grabbing attention almost immediately, which brought a blush to her face, but the fact that no one would recognize her definitely made her feel better. She felt her bowels grumble as her urge to poop spiked, and Natsuki was forced to pause and clench. She didn’t know if anyone had noticed, but she blushed anyway and hurried along. Messing herself in cosplay in the busy streets of Akihabara was not part of the plan.

After a short walk, with Natsuki having to shrug off not only her growing urge to poop, but also the many eyes falling upon her from her cosplay, Natsuki made her way to her actual destination. It was a large manga shop filled with manga, anime, and figurines. She stepped in confidently and naturally everyone near the entrance who had seen her come in immediately turned to stare. It wasn’t impossible to spot the occasional cosplayer wandering around Akihabara, but usually they were advertising for something or trying to grab attention for an event. Natsuki was doing neither, and therefore grabbing a lot of attention. 

Natsuki looked around. The manga shop was pretty busy, and while some areas were more remote than others, there wasn’t really a place she could tuck away and mess herself discreetly. If she went now, people would definitely notice. Still, Natsuki wasn’t trying to avoid getting caught. That was the reason for her cosplay. She could get caught, but not recognized, and she couldn’t think of anything risky than that.

Her heart pounded as she made her way over to the shelf and started browsing manga. She reached for a series that was quite purposeful. It was a rather crude and shameless series known for its toilet humor, and many of the characters got into situations like what Natsuki was in right now. Stuck in a bookstore needing to poop. Anyone reading the series would likely make the connection.

Speaking of needing to poop, her stomach was starting to get restless, and she could feel the pressure as she clenched. Her poop continuously tried to push its way out of her as she held it back, and she was shuffling slightly. There were plenty of seats, but Natsuki didn’t want to sit down. She wanted people to notice her restlessness.

As Natsuki felt the eyes of the other patrons on her, she felt her heart race in her chest. She couldn’t calm down. Underneath her mask, she was blushing constantly, and a nagging voice in the back of her mind was screaming at her that this was a bad idea. Still, another part of her was excited. Natsuki couldn’t remember the last time she felt so exhilarated.

Another sharp signal from her bowels, and Natsuki rubbed her stomach as she clenched her ass as hard as she could. A somewhat loud fart escaped and she instantly felt eyes land upon her. She blushed furiously, but tried not to let it show as she continued to read the manga. She wasn’t really paying attention, but the character in the manga also had to go. Stuck somewhere she couldn’t use the bathroom after eating a comically large lunch. Watching the character’s struggles only further reminded Natsuki of her growing desperation, and she knew she wouldn’t be able to hold it much longer.

As Natsuki squirmed and shuffled around, she could see out of the corner of her eyes others were starting to notice, and some were gossiping about her. She wondered if any of them would come up to her and ask if she was okay, or if any of the staff would come to discreetly point her to the very clearly marked restrooms towards the back of the store. 

Another strong push from her bowels, and Natsuki let out another loud fart as she struggled to hold it in. She clenched and squeezed, but she could feel the mass of poop pressing out against her hole, begging to escape. If she loosened her muscles for a second, she was sure she would fill her panties.

In the manga, the character who was also in desperate need of the toilet wound up getting freed at the last minute, and practically barreled over her friends just to make it. Natsuki let out a sigh. That was her problem with manga like these. They weren’t ever able to go too far, and never really committed to any wettings or messings. She supposed most people didn’t really want to see a character poop themselves, so she understood, but now that she had awakened to this interest, it bothered her.

Natsuki shuffled over to the shelf and put the manga back, feeling more and more eyes on her as she was less and less able to mask her desperation. Trying to find another volume she knew had more toilet humor in it, she suddenly felt her stomach cramp up. She doubled over, trying to clench and hold it, but she really had to poop at this point. She felt her poop start to push out of her, and even as she desperately fought, she knew that she was at her limits.

It happened quickly. She doubled over and relaxed, and suddenly all the shit she had been holding back pushed its way out of her quickly and forcefully. She was immediately hit by the strong smell as the poop she had been holding back finally exited her, and she let out a relieved sigh. She could feel it coming out as one long log, forcing out and filling her panties. They sagged immediately and she was worried some would fall out and land on the ground. As fine as she was with messing herself like this, the last thing she wanted was to stink up the store or make a mess for the staff to have to clean up. Luckily, however, her poop was solid enough that it stayed contained in her panties, and she was able to fully mess herself. 

She looked around, thinking people would notice. But her frilly dress covered up the bulge in her panties and while she was sure some knew, others were simply awkwardly glancing at her from time to time, like that had been before. Relieved that not everyone was now staring right at her, Natsuki carefully and discreetly snapped a few upskirt photos of the mess before hobbling to the bathroom, trying to walk as naturally as possible.

On her way there, a blushing, bashful girl with long black hair approached her, “H-hey, sorry, I uh… I just wanted to say, I really like your cosplay!”

Natsuki blushed intensely. She was standing there, with her panties filled with poop, and a girl was complimenting her, “I uh, thank you!”

She brushed past the girl quickly and continued towards the bathroom, and she noticed the girl make  a face like she had finally smelled the stench emanating from Natsuki’s panties and did a double-take in her direction. Natsuki didn’t dare meet her gaze again as she shuffled into the toilet.

Just like before, Natsuki snapped a few more photos for Sayori before cleaning herself up. She changed out of her cosplay and separated the clothes that were clean from anything that had gotten messy from her accident before sitting down on the toilet. Now that she was back in her usual clothes and no longer desperate to poop, the reality of what Natsuki just did set in fully.

Oh my god, I can’t believe I shit myself in front of other people.

Embarrassment and shame washed over Natsuki as she sat there, stunned. Her mind practically went blank and she blushed furiously as her heart beat in her chest. Instead of waiting for when she got home, she pulled out her phone immediately. She needed to share this with Sayori.

“Hey, so,” Natsuki began. She explained exactly what happened, and sent Sayori the photos of her accident.

“Wow, I can’t believe you did something like that!” Sayori replied.

“I would’ve never done it if I wasn’t in cosplay. No one could recognize me. Still, I’m absolutely mortified.” Natsuki admitted.

“I think you did a really good job! I haven’t really come up with anything. I was thinking about messing myself in that cafe we went to the other day, but it was really crowded so I got nervous and backed out.”

Natsuki felt better. Not only had she one-upped Sayori, but Sayori admitted that even she had her limits, and she wouldn’t go too far either. It made Natsuki feel more comfortable.

“Don’t worry,” Sayori continued, “I don’t think anyone recognized you. And that you did something so risky. I think maybe you might have me beat on this one.”

Natsuki smiled at seeing Sayori admit that she won, but something didn’t feel right. Sayori had still messed way more than her over the course of the competition, and while Natsuki agreed that what she just did was bold, bordering on insane, she didn’t really feel like she earned her victory yet.

“Nah, I don’t want to win this easy,” Natsuki replied.

“Easy? Natsuki, you totally outdid me on this one!”

“Yeah, but you outdid me on the train, and you weren’t even in a disguise for that one.”

“Alright, fine, how about one last round!” Sayori replied, “We each get one more messing, and whichever one is more daring wins?”

“I’m fine with that one!” Natsuki nodded.

As soon as they agreed on that, they said their goodbyes for the time being and Natsuki left the stall. She was reasonably sure that no one would recognize her as the girl in the cosplay from earlier, but the possibility was there, so she skirted around the shelves and left the bookstore as discreetly as possible. By the time she was on the train home, she had forgotten all of her residual embarrassment from her most recent messing, and was already brainstorming for the final round.

***

Despite her determination, Natsuki had entirely exhausted all of her ideas for the final round. As much as she wracked her brain, she simply couldn’t come up with anything that came close to  messing herself in a crowded bookstore in cosplay. 

Well, I suppose there’s shitting myself in a crowded bookstore NOT in cosplay, but I’ll never do  that in a million years.

It was Friday afternoon, and Natsuki found herself in her last class, trying to come up with anything. She also could feel her bowels nagging at her again. Over the last few days, Natsuki had taken to holding it until the last minute in case something came up. This meant that she was getting used to ignoring the feeling of having full bowels and the need to poop lingering at the back of her mind. 

She pushed back her growing urge and continued to zone out, staring up at the clock from time to time as the teacher droned on in the background. Perhaps she should wait for the weekend, which would open up her options a lot more. She was trying to think of stuff that neither her nor Sayori had done yet. For her, that ruled out the theater, the train, and the cafe. Even though Sayori never actually messed herself at the cafe, Natsuki wouldn’t feel right just taking the idea and doing it after Sayori already told her.

Natsuki felt her stomach gurgle as she felt the pressure building, and she rubbed her abdomen as she looked back up at the clock. She wasn’t desperate yet, but if she was just going to wait for the weekend anyway, she figured she might as well go after class.

Then again, they had club after class, and Natsuki began wondering if doing something at the club would work. 

By the time the bell rang, Natsuki resolved to at least hold it through the club meeting. She wasn’t struggling yet, and she could always excuse herself later if she decided not to mess herself there. On the other hand, if anything came up at the club, she’d be prepared. She’d even be doing it right in front of Sayori. 

As she stood up, she felt the pressure in her stomach build further and she was forced to stop and clench herself. She brushed off the urge and grabbed her bag before heading straight to the clubroom, passing by the restrooms on her way.

“Oh, hey, Natsuki!” a cheery voice called. Natsuki looked up and saw Monika sitting at the front of the room. 

“Hey Monika!” Natsuki smiled, waving. She immediately turned to look around the room for the others, but surprisingly, neither Yuri nor Sayori were there yet.

“Oh, the others aren’t going to make it today. Yuri’s out sick and Sayori’s at a budget meeting with the student council,” Monika answered, noticing Natsuki looking around, “I was gonna cancel club again today, but I had a few things I needed to finish up here first.”

“Ah, sorry to hear that,” Natsuki replied before pausing, “Wait, isn’t the president supposed to go to the budget meeting?”

“Well, it can be either the president or the vice president,” Monika began, “And for some reason, Sayori really wanted to go.”

“Huh,” Natsuki shrugged, “Well, I guess that means it’s just the two of us, then.”

“Seems so,” Monika smiled, “I have some papers I need to get ready for the autumn festival coming up next week, so I don’t really have much else planned for club today.”

“That’s okay, I can help, if you want,” Natsuki offered.

“I appreciate the offer, but it’s really more of a one-person job here,” Monika explained, “Oh, but feel free to stick around. We can chat.”

Natsuki recalled the other day when Monika had invited her to go shopping, and she had to turn her down. Not only did Natsuki feel bad about turning it, but Monika had been acting odd, and Natsuki never got to talk to her about it afterwards or get to the bottom of it.

“So, Yuri’s out sick, huh?” Natsuki asked.

“Yeah, that’s why she’s been quiet, or at least, quieter than usual,” Monika nodded, “Don’t worry, though! It’s just a cold. Today’s the first day she’s had to stay home because of it.”

“Well, I hope she gets well soon,” Natsuki replied, “Actually, is that why you wanted to get her something? A get-well-soon present?”

“No, it wa-” Monika immediately paused and backpedaled, “Y-yeah, actually. I figured, we’re… friends, so I’d get her something nice.”

Natsuki narrowed her eyes again. She wasn’t buying it, especially if today was the first day Yuri was actually sick enough to miss school. Monika was definitely acting weird, and hiding something when it came to Yuri. She gave Monika a scrutinizing gaze, noticing her shuffling around uncomfortably.

Actually, Natsuki noticed that Monika was shuffling around a lot more than if she was just feeling a little awkward. Perhaps it was because Natsuki had to poop herself, but she noticed Monika shuffling her legs idly as she focused on whatever project she was doing for the festival. Suddenly, an idea hatched in Natsuki’s mind. If Monika did have to go, whether she had to pee or poop, if Natsuki could get them both to have an accident, then that was surely way more daring than anything else she could come up with that didn’t involve shitting herself in front of strangers again.

However, Natsuki would first have to determine if Monika had to go.

“Hey, Monika,” Natsuki began, “I’d hate to bother you while you’re busy, but I wanted to grab a manga from the back room, and I need help reaching it.”

“Oh, it’s fine,” Monika smiled, standing up. As soon as she did so, she paused to shuffle in place, and Natsuki’s suspicions were all but confirmed, “I’m sorry for having you keep it on the top shelf. The teacher kept nagging me about it…”

“It’s cool, I get it,” Natsuki nodded, “As long as you’re willing to help!”

Monika smiled, though it looked a tad forced, and she stiffly made her way over to the back room. Natsuki followed suit, feeling her own bowels remind her that she was full too. She was really starting to feel the pressure building up inside of her.

Monika reached up on her tippy toes and looked across Natsuki’s manga collection, “So, which ones did you want down?”

“Hmm…”

Natsuki trailed off as she watched Monika shuffling uncomfortably in her stretched out position. She took her time as Monika struggled, bouncing up and down on her feet as she was clearly squeezing her thighs together and clenching. 

“That one, on the far left,” Natsuki finally announced. 

“Sure thing!” Monika said, breathing a small sigh of relief. 

She stretched over to grab the manga Natsuki asked for, but then paused and made a pained noise as she rubbed her stomach. Suddenly a short, loud fart escaped her and she blushed furiously. She grabbed the manga and turned around stiffly, at first looking awkward about it, but then trying to laugh it off.

“Haha, sorry about that!”

“It’s okay, it happens,” Natsuki smirked, somewhat teasingly. Monika groaned as the two made their way out of the back room and back into the classroom proper. Monika was definitely walking way more stiffly at this point. Natsuki herself was more shuffling than walking back to the desk, but she was behind Monika, so she didn’t think she noticed yet.

It was the perfect time for Natsuki to jump on her chance.

“Say, Monika, are you okay?” Natsuki asked, “You seem a bit stiff?”

“Huh? Oh,” Monika laughed, “I’m fine! Don’t worry about me.”

“You’re acting odd,” Natsuki pointed out, “I know something’s up.”

“A-alright, fine,” Monika sighed, defeated, “I actually kind of have to go to the bathroom, but I really wanted to finish these papers first.”

“Oh, so that’s what that fart was,” Natsuki teased.

“W-well,” Monika blushed, “Y-yes. I guess that’s part of it. I also really need to pee, but like I said, I can hold it until I’m finished.”

Natsuki narrowed her eyes. Why would Monika insist on holding it just to finish the papers for the club? She was fine taking her time out to help her grab manga off the top shelf, so clearly it wasn’t a matter of not having time. Moreover, the whole excuse that Monika had to work on papers in the first place seemed a bit odd, considering that any paperwork for allocating funds for the autumn festival would’ve been due at the meeting Sayori was currently attending, and it wasn’t like they couldn’t all work on the flyers for the event next week.

Actually, come to think of it, the other day at the park, Monika and Yuri had been acting very strangely. If Natsuki looked at it through the lens of something like what she and Sayori were doing, having a contest or just messing around with holding it, things made a lot more sense. 

Is it possible that Monika is also into this kind of thing?

Jumping on that assumption, Natsuki immediately tried to tease out an answer.

“Oh, but wouldn’t you be able to focus more if you just went?” Natsuki asked. She was suddenly hit by a wave of pressure from her abdomen, as if her own stomach was calling her out on her hypocrisy, but she simply clenched hard and tried not to look too stiff as she waited for Monika’s response.

“W-well, I mean, I do well under pressure,” Monika replied.

“I think that’s a different kind of pressure,” Natsuki teased, “Unless you mean you’re better at focusing when you have to go to the bathroom?”

“No, that’s not-” Monika paused to shift around, shuffling her legs as she gathered her thoughts, “Well, that’s not to say that I think I focus better when I have to go.”

“Oh, then why would you hold it?” Natsuki asked, “Unless you like that sort of thing?”

“I mean, no one likes having to go to the bathroom, right?” Monika replied, “Unless that’s why you’ve been holding it too.”

Natsuki was caught off guard, she felt her stomach cramp a little and blushed as she squeezed her thighs together.

“Oh, don’t think I didn’t notice,” Monika smiled, “I’m quite interested in these sorts of things.”

“Aha, so you are interested in them!” Natsuki pointed out.

“Well, you are too, right?” Monika asked, “I mean, in the first place, this all started with that manga of yours.”

“W-well, I never meant it to turn out like that,” Natsuki replied, “Besides, I wasn’t the only one who had an interest in this before the sleepover!”

“Oh, so that’s what you two have been up to?” Monika smiled, “I was wondering why you two haven’t been coming to club as much this week.”

“You say that like you and Yuri haven’t also been up to something!” Natsuki pointed out.

Monika blushed, “Y-yeah, well, we’ve definitely been up to a whole lot, recently.”

Before Monika could say anything else, however, she wound up letting out a gasp and doubling over. Perhaps seeing Monika desperate triggered Natsuki’s own body, because she now felt her full bowels trying to push their contents out, and she was forced to clench hard to keep the pressure contained.

“Is that why you’re holding it now?” Natsuki asked.

“Well, kind of,” Monika replied, still rubbing her abdomen and squirming around in her seat, “Actually, I was just planning on wetting myself and sending Yuri a photo to cheer her up, but then I realized I had to poop, and I kind of decided to hold both for myself.” 

“Ah,” Natsuki nodded.

“What about you, why are you holding it?” 

“Well, basically the same thing, I’m gonna shit myself and send Sayori a photo later,” Natsuki replied. There was no reason Monika needed to know about the contest, or that she was now unwittingly a part of it.

“Man, the way you said that…” Monika blushed.

“What’s with that reaction?” Natsuki asked.

“O-oh, nothing, sorry!” Monika backpedaled.

The two sat there in awkward silence before Natsuki felt a sharp pressure build up in her backside. She was really full and she could feel all her poop right at her anus, bulging as it tried to escape. She was definitely coming up at her limits. However, it also looked like Monika was at her limits too. She could barely sit still, with a hand jammed between her legs as she squirmed and riggled around in her chair. 

Natsuki knew now was the time. They were both at their limits, and Natsuki knew the one thing that would push them both beyond the point of no return.

“Well, I’m glad you opened up to me about this,” Natsuki smiled, “It’s nice to know I’m not alone in my interests.”

As she spoke, she stood up and hobbled over to Monika, having to press a hand against her ass just to keep herself contained that much longer. Monika seemed caught off-guard by their sudden proximity, and before she knew it, Natsuki was hugging her from behind. Tightly. Too tightly.

“Natsuki, stop, if you keep squeezing me like that I’ll… ah!”

A spurt of pee shot out from between Monika’s legs and onto the floor, and the last of her strength gave out. Natsuki heard the combined sound of hissing and a soft almost crunching sound as Monika’s body finally let go of all she was holding back. Her panties quickly filled with poop as she pissed uncontrollably onto the floor. She must’ve been holding her pee in for quite a while, because her stream sprayed right through her panties and onto the floor in a waterfall. 

As Natsuki watched, she also lost control, her poop pushing its way out of her forcefully and almost explosively. It wasn’t messy, but she could feel it all coming out at once, her bowels forcing all her poop out of her in one giant mass. Despite her feeling like there was a lot, however, when she was finished it wasn’t actually all that much, staying neatly contained in her panties. She might’ve even been disappointed in herself, if it wasn’t for Monika standing next to her, also having an accident.

Monika finished shitting herself and continued pissing until there was a sizable puddle on the floor of the classroom. When she finally finished, she let out a relieved sigh and braced herself against the desk, panting as she recovered from the heavenly release after holding so much in.

Natsuki immediately took the opportunity to snap a few daring photos without Monika noticing. 

Once Monika came back to her senses, she turned around to Natsuki, “Well, I guess we better get this cleaned up, huh?”

Natsuki nodded, not really caring about the mess. She was just excited to send the photos to Sayori later.

***

“Well, you definitely won,” Sayori admitted after seeing the photos.

Natsuki did a small fist pump as she laid on her bed, texting Sayori.

“I can’t believe you got Monika to mess herself too.”

“Well, she was already holding it,” Natsuki admitted.

“Still, that’s way better than anything I could come up with. I was going to mess during the budget meeting with the student council, but when I was there I realized what a dumb idea that was. Not to mention it could ruin the reputation of the literature club. I didn’t want to do that to Monika.”

Natsuki found that amusing, considering she was pretty sure after her earlier conversation that everyone in the literature club had a weird fascination with holding it, but she understood Sayori’s sentiments.

“Oh, by the way, my parents are going to be leaving tonight for a short trip and they’re going to be out of the house for the weekend, in case you want to come over,” Sayori offered.

Natsuki jumped on the chance, “Sure thing! I’ll be right over.”

Not thirty minutes later, and Natsuki was fully packed up for a sleepover at Sayori’s, and already halfway down the street. By the time she got there, she saw Sayori’s parents on their way out. Her mother smiled at her politely.

“Hello Natsuki! Sayori told us you’d be coming over! The door’s unlocked, so head on in. Sayori’s up in her room!”

“Thank you!” Natsuki bowed politely to Sayori’s mother and father and rushed in. She closed the door behind her and called out, “Sayori, I’m here!” Before quickly heading up the stairs. She didn’t hear a response, so she figured Sayori was just busy with something or other in her room. She quickly made her way down the hall and gently opened the door.

“Hey Sayo-Oh my god!”

There, on her bed, was Sayori, legs spread with a finger rubbing against her clit. She had her cell phone in her other hand and was blushing furiously as she stared up at Natsuki like a deer caught in headlights. She quickly closed her legs and tried to make herself some semblance of presentable.

“Oh my god, I’m so sorry!” Sayori blushed furiously, “Those pictures from before just kind of… well… I… I got turned on, and I couldn’t help myself. I lost track of time.”

“W-wait, this is like, a sexual thing for you?” Natsuki asked. 

“Wait, it wasn’t for you?”  Sayori asked back.

Suddenly, a lot of what Monika had said to her earlier that day made a lot more sense. Actually a lot of Sayori’s actions also made a lot more sense. Natsuki had always had an odd interest in holding it, but she had never personally considered it a sexual thing. Then again, she thought back to the thrill she got messing herself throughout the contest, and how much her heart was racing the more she did it.

“No, I mean, it wasn’t, I mean…” Natsuki’s head spun with the sudden realization that this was a fetish, and that she had no idea if she was into it or not. Moreover, Sayori was literally getting off to photos of her. What did that make them now? Suddenly Natsuki also thought back to what Monika had said about her and Yuri. If this was a sexual thing for them, did that mean they were…?

Natsuki sat down, feeling all the color drain from her face.

“Oh my,” Sayori frowned, “M-maybe we need to talk…”

The End