"I will quit school today." Mizuki, who works as a physical education teacher at the school where her son's school attends, stood at the last podium. The reason Mizuki decided to quit her job was because of the sneaky bullying of her school. Her mother quits her school and stands up to take revenge on her classmates instead of her son who tried to take his own life because he couldn't stand the bullying that was getting worse day by day. Mizuki finally finds out where her students are hanging out by making full use of her own muscles, and infiltrates without regard for her danger...
