the muscular mother who fights for her son, nagase mitsuki.

"I'm leaving school today." Mitsuki, who worked as a physical education teacher at his son's school, was in the last pedigree. The reason why Mitsuki decided to retire was his absurd bullying of the school. Instead of his son, who had failed to survive the day-to-day bullying, he left school and stood up to revenge his classmates. It was a beautiful moon that finally found the place where the students were stuck by making full use of their trained muscles and infiltrated without worrying about danger.