Jajjimento-chō no kakusei (kari).Hayato arrives at school and Rin talks about what happened at the summer festival to embarrass him. Ui is present, however, and thus finally learns what took place. Later, Ui and Karen leave the club room after Rin walked in asking for help, with Ui telling Rin to take Hayato instead. The two of them observe and end up tailing a couple into a secluded classroom, whereupon Rin is shocked but also aroused at the sight of the couple's sexual behavior. After Hayato snaps her out of her state, Rin interrupts the couple and orders them to stop.