Natsume, a teacher, was plagued by a certain problem. The source of his worries was Aoi Yuuta, who had transferred to Natsume's class six months ago. Aoi was an outcast in the class and frequently caused problems, so as his homeroom teacher, Natsume had been repeatedly instructed by the school, putting him in a difficult position. Natsume had believed that Aoi would change his ways, saying, "I'll definitely help him reform." However, his hopes were dashed, and Natsume fell for Aoi's tricks and ended up being raped.