The girl who seventeen year old Kaname came to like was rumoured to be mentally ill (AKA "menhealer") and a wrist cutting addict. At least, the self-harm part was true, and so he lied that he was the same to get close to Igarashi, his crush who stayed aloof from everyone.

"Onani" means masturbation. And that's what this guy is good at. Every day after school, he sneaks into the mostly unused girls bathroom on the 3rd floor, and masturbates. Until one day when he's caught... This is a story of mistakes, redemption, and the choices made in between. It contains the very worst and best of the human condition.