Synopsis

Kakeru Kurosawa is a high school student who usually keeps to himself and looks down on his classmates. He has a strange secret: every day after school, he sneaks into the girls’ bathroom on the third floor and does something private. Then, one day, a small girl from his class named Aya Kitahara almost catches him. This meets starts a story about blackmail, bullying, revenge, heartache, and, in the end, forgiveness.

(Note: There’s also a side story included.)