Female student Minori is a student whose only redeeming quality is her seriousness. One day, while practicing for her club activity alone on the rooftop, she witnesses delinquent student Meguro engaging in misconduct and scolds him. Their homeroom teacher Takimoto also appears and reprimands Minori, but Meguro has been sexually assaulting a female classmate and providing her to Takimoto in exchange for better grades, forming the worst kind of collusion. Then, the two set their sights on Minori, calling her out under the pretense of discussing her advancement, and then they…
