Synopsis: Kyoushitsu Jibaku Club

It has been three years since a classroom bombing that was carried out by a boy who hardly attended school. The seven survivors of the tragedy have now convened in the same classroom. During the gathering, one of the survivors, Takumi Shindou, revealed that one of them was responsible for providing the culprit with the bomb. Consequently, a search for the accomplice was initiated. Meanwhile, a female student in a Tokyo-based private high school threatened to kill everyone around her with a tightly-wrapped bomb. This incident was part of a wave of terrorist activities by victimized students, which sparked fear in classrooms throughout the land.