Teacher Iroha was troubled by a certain problem. The source of her worries was Yuta Aoi, who transferred to Iroha's class six months ago. As a homeroom teacher, Iroha was repeatedly instructed by the school to guide Aoi, who was a conspicuous figure in the class and often caused trouble, and Iroha was in a difficult situation. Iroha, who believed in Aoi's reformation, saying "I will definitely reform him." However, her expectations were betrayed, and Iroha, who fell into his scheme, was violated.