Shinta is in love with Natsuki Amemori, who sits next to him. However, being a top student, Natsuki is far out of his league, as Shinta isn't good at studying. Furthermore, Shinta has a secret hobby. It's that he masturbates to Natsuki, regardless of time or place, even within the school. Today, while thinking about Natsuki, he notices a sound. Peeking, he sees Natsuki masturbating. Shinta is captivated by the sight. By chance, Natsuki notices him. Seeing Natsuki, embarrassed and close to tears at being caught, Shinta confesses that he had just been masturbating.