Natsume, a teacher, was troubled by a certain problem. Yuta Aoi, who transferred to Natsume's class half a year ago. Natsume finds himself in a predicament as he receives repeated guidance from the school as homeroom teacher by Aoi, who is a floating presence in class and often causes problematic behavior. Natsume believed in Aoi's conversion, saying, "I will definitely rehabilitate you." However, his expectations were betrayed, and Natsume fell for his tricks and was raped.
