Akutsu is assigned as Kazumi's homeroom teacher. Akutsu suddenly gives the class a pop test and announces that the two students with the lowest scores will be responsible for all the classroom chores.

Akutsu forces Hikaru, a classmate who defended Kazumi, to be the chore member. Akutsu refuses Kazumi's request to forgive Hikaru, saying that Akutsu only talks to the two students with the highest grades in the class.

At the school's anniversary celebration, Akutsu's class will perform a dance. Akutsu tells Hisako, who has no sense of rhythm, that she does not have to come to the performance. Kazumi, outraged, suggests that they all boycott the event.

Akutsu tightens her grip on the students after their attempt to boycott the dance performance. Meanwhile, Mari's purse is stolen.

Kazumi is accused of stealing Mari's wallet and is ostracized by her classmates. Her good friend's continued absence from school leaves Kazumi feeling more isolated.

Akutsu says she will continue teaching during the summer vacation. The classmates, except Kazumi, are afraid to disobey Akutsu and promise to come to school during the vacation.