Naughty Schoolgirl Trained to Wet and Cum in her Diaper

After doing some naughty big girl thingies, Lumi finds herself tied to toilet, gagged and diapered. Struggling is futile and before long she feels the warm pee gushing in her diaper. But there's no mercy, no salvation. She's made to wet again and again until her diaper can't hold it and the pee drips down her thighs. And even that's not enough... When she's thoroughly soaked she gets to taste a bullet vibrator, teased to cum again and again in her wet diaper.