Tanukichi wakes up to find Kosuri sleeping next to him and Anna dangerously holding a knife in his doorway. He quickly decides to pretend Kosuri is his little sister, but it backfires as Anna threatens to stab her, cutting a large hole in his floor before leaving. Later at school, Anna’s father has sent Oboro Tsukimigusa to become the school’s Prefect and take charge of the effort to eliminate impure influences in school. However, unlike the moral authorities, Oboro starts by removing mundane items like basketball hoops and volleyball nets as they may somehow lead boys to immoral thoughts. She also tries to confiscate Hyouka’s yaoi manga until Hyouka convinces her that it has useful value. Meanwhile, Ayame plans to have SOX distribute Otome’s drawings at other schools. Kosuri decides to take charge of the operation herself while Tanukichi convinces Oboro to white-list toilet paper rolls before Anna has an accident. Later, Kosuri returns to report her mission was completely successful, and fueled by her new success, treats Tanukichi like a slave at home. She explains to Tanukichi that she subverted the other school’s student council by using her knowledge of shoujo and romantic manga tropes to play the boys and girls off of each other until they all fell under her control. While Tanukichi detests her methods, he can’t bring himself to sell Kosuri out to Ayame. The next day, Ayame privately tells Tanukichi that SOX’s actions suffered blowback with the sudden appearance of Oboro and her comrades. On top of dealing with the threats of the moral authorities and the Gathered Fabric faction, SOX must also find a way to sabotage the Prefect system before the government exports it to other schools.