(What should I do... I can't hold it in any longer) On her way home from shopping, Mayuzumi is hit by a strong urge to pee. She goes to the nearby Fujisaki's house to borrow their toilet, but Fujisaki is not there. Unable to hold it in any longer, Mayuzumi wets herself. (I did it...) Fujisaki returns home and lets Mayuzumi use his bath, but... To her surprise, Fujisaki has been watching her urinate. Then, suddenly, he demands that she take responsibility for wetting herself...