The newlywed Mina-sensei is the number one on the school and is forced to play sex toys for the problem child.

I married a colleague, Mr. Kaneda, and retired and entered the family. However, while my husband was on his job, he fell down the stairs on the school and was hospitalized. I decided to replace my husband who couldn't work and return to work as a part-time employee. After a student transfers to the school, the school becomes rough and raged, and the problem children are gathered in a special classroom and quarantines. ...I was entrusted with that class and raped by the most problem child on campus.