Tatsumi finds himself entangled in the schemes of a dominant senior student who runs a mysterious house dedicated to "correcting" girls through pleasure and submission. After helping the senior punish a manipulative blackmailer named Shimura, Tatsumi is drawn further into the web when another student, Akahori, is forced into a high-stakes endurance contest to keep her own scandalous secrets from being revealed.
Tatsumi finds himself caught in a power struggle between the oppressive Student Council and the rebellious Hatorishima Hajime. After Mashiro-sensei reveals the council's hidden tyranny and shares an intimate encounter with him, Tatsumi is drawn into a provocative "endurance match" with Hatorishima. Using a psychological trick to break down her defenses, Tatsumi helps Hatorishima find a release from her frustrations, further entangling himself in the school's dangerous social war.
The episode reveals Hizen's traumatic history of blackmail and dissociation, illustrating the cruel environment of the academy. Simultaneously, the sadistic Student Council President demonstrates her total dominance by subjecting Tatsumi and Hikita to psychological and physical humiliation. As a secret invitation to a night of unrestricted hedonism is circulated, the President asserts that her word is law and no one is safe from her control.
Tatsumi and his allies successfully outmaneuver President Awano, using her own deep-seated insecurities to break her spirit and force her submission. Following the victory, Tatsumi is warned about the dangerous Hatorishima Hajime, only to fall victim to her hypnotic manipulations in a disturbing encounter. Now wary of Hatorishima's true nature, Tatsumi shifts his focus to expanding his influence by blackmailing President Akahori over her secret shoplifting habit.