[Machine Translation] Yohei Minami works as a monitor at the Youth Suicide Control Project Center. Here, four boys and girls were given a "red switch" to take their own lives, and experiments were conducted on them. They were placed under house arrest in extreme conditions and were supposed to take their lives one after another because they could not bear the loneliness, but these four were exceptional children who had not pressed the switch for seven years. Hearing their reasons for wanting to live, Minami and the others attempt to escape, but a cruel fate awaits them.