Ohoho~ do we?! This poor girl was already desperate at the very beginning, now she has a whole team of girls following and watching her every move so that she doesn't attempt having a sneaky pee or even leaking in her panties! (Or I think the conditions cover that as well) Can't wait to see how you (and them) are gonna keep playing with her urgent need to pee!
You are absolutely right. Another one that did an amazing job at focusing the entirety of the story on the desperation and holding is "Tokonatsu! Hamuko-chan"!
@Jailor Eckman: Forgot to mention, I love that you're underlining some specific words, specifically that psssst! I love teasing like that and it's almost never used!
That's what most of the omo novels/manga tends to lack. We get 3or 4 pages of desperation before the big splash. The only one I can think of that balances this correctly is ureshon.