A girl in the bathroom gives a young man a blow job and then kisses the guy, playing with his cock with her finger. The guy can't take it anymore and starts fondling the girl. Katsumi makes the guy cum, but he takes the initiative by fondling her. The guy drives her with his fingers and then in the shower he punches the wall with his head. A little later, during lunch, he remembers this, which embarrasses him as another girl sits in front of him. He quickly finishes his lunch, trying to escape the awkward situation. His mentor catches up with him, and they discuss right on the run which club the young man will supervise. Without noticing where he is running, Tatsuya (that's the hero's name) falls into a booby trap set by Anna. Another girl takes his hand and a crunch is clearly heard, followed by the hero's heartbreaking scream. He wakes up in the hospital with his arm in plaster. Anna takes advantage of the situation to give him a blow job. Suddenly Usagi, the girl who injured Tatsuya's arm, joins in. She also expects the guy to become the handler of her club. Neither girl wants to give in. Suddenly, a third girl catches them doing this. After class, Tatsuya meets Katsumi on the roof, who blackmails him into doing her commands. She gets on top of the guy and takes advantage of his powerlessness, but then it turns out that she is willing to do anything for school. The guy understands her and, since this is their first time with both of them, decides that he will try to make the best of it. The conversation turns into passionate sex. One pose alternates with another and eventually they cum several times. Upon returning home, Tatsuya discovers that all four girls have decided to compete for him. This information makes the guy faint.