While talking to his friends, Keita accidentally gropes his fellow student, Miharu Mikuni, and gets slapped. Ako and Riko become suspicious about whether Keita has been 'cheating'. When Keita goes to study at the library, Miharu, who is the librarian, becomes too intimidated by Keita to go to the bathroom. Before she can go to one, Keita tries to return a book she dropped and chases after her, dragging her into various hiding spots to hide from Ako and Riko. However, they end up getting locked in the gym storage room and their hashed escape plan leads Miharu to relieve herself on Keita's back. They eventually manage to escape and Keita promises to keep Miharu's incident a secret, though gets beaten up when he accidentally sees where Miharu had removed her panties from.
Mientras hablaba con sus amigos, Keita gropes accidentalmente a su compañero de estudios, Miharu Mikuni, y se dio una palmada. Ako y Riko sospechan que Keita ha sido 'engañando'. Cuando Keita se va a estudiar en la biblioteca, Miharu, que es un bibliotecario estudiante, llega a ser demasiado intimidados por su proximidad a Keita para ir al baño, creyendo que va a tientas si ella toma sus ojos de él.
어쩐지 수상한 케이타의 모습에 아코, 리코는 케이타의 바람을 의심하게 된다. 비 오는 날, 우산을 핑계로 케이타의 학교에 찾아가는 아코와 리코. 마침 케이타는 미쿠니와 함께였는데….
