Grade 3 Class C of Keyakizaka Private High. One morning, the students find their homeroom teacher, Daigoro Tokuyama dead. He is still warm. Suddenly, their sub-homeroom teacher Kanzaki appears. Frightened, they hide the body. Kanzaki asks if they'd seen Tokuyama. Evading discovery, they decide not to call the police, but to keep hiding the body. (Source: Amazon)