I was perfect in both academics and clubs, and the most popular student, but after one bout of incontinence, I became the class's sex slave. (Nanamori Riri, SONE-619)

[Nanamori Riri's first school uniform look is super cute!]...But she ended up making a mess of the floor. The talented and beautiful Nanamori Riri, the most popular girl in school, is about to embark on her long-awaited school trip, gathering with her classmates to prepare. There's another girl, Sachi, a close friend. However, the boys only talk about Nanamori Riri, and Sachi is always used as a tool. Her jealousy builds up, and she finally tampers with Nanamori Riri's drink, putting a diuretic in it. The urge to urinate intensifies, and she rushes to the toilet, but it's still a mess.