"I'm quitting school today." Mikotsuki, who works as a physical education teacher at the academy her son Manabu attends, was standing on the podium for the last time. The reason Mikotsuki decided to resign was due to the despicable bullying directed at Manabu—. Unable to endure the worsening bullying, her son attempted suicide. In his place, the mother decides to quit her job and stand up to take revenge on his classmates. Using her well-honed muscles, Mikotsuki finally pinpoints the students' hangout spot and infiltrates it without regard for danger…
