Kosuri is staying in Tanukichi`s apartment for the time being, and Anna, unstable as always, breaks in and finds them sleeping together. He introduces Kosuri as his little sister, which mollifies Anna somewhat but she still stabs the floor around Kosuri, making her fall into unit below. The Public Morals Committee has also assigned a trained disciplinary officer to the school named Tsukimigusa Oboro, who sees indecency everywhere, but actually proves remarkably easy to manipulate.
Later, SOX has a meeting, and Ayame explains that their next mission is to infiltrate the nearby Zoushigaoka Academy and try to at least get some of their dirty pictures in. Kosuri says she will take care of it and three days later she has outdone herself, having produced accurate information on the school that will allow them to distribute their pornographic pamphlets without detection.
Kosuri begins to boss it over on Tanukichi, and she explains how she managed to infiltrate the school by deviously manipulating the student council members` feelings, and he objects, saying that Ayame would never approve of such methods that involved hurting people. She says that he would not expose her actions to the woman he loves, as it was evident to her that he is in love with Ayame.