Momo is a new teacher who has been appointed due to the sudden retirement of her predecessor. It was a class with constant bad rumors, but he was motivated to overcome it with his inherent cheerfulness and passion. One day, Momo suspects that his student Kashiwagi is being bullied by a delinquent group headed by Yoshino, the president's son. However, Yoshino quickly realizes this and buys anger. After that day, my daily life changed completely. The days of trampling and being toyed with by the bad guys began.