Chika visits Sensei in his office at school, and locks the door. She tells Sensei that she was was supposed to have detention sometime, and Sensei says that they can do it now. Thinks that it would be "fun pushing her buttons a bit", he starts to act as though it's a real detention, and finds that she has "quite the cute side" when she's annoyed. She ends up giving him a handjob on the couch.