OBA-260 I'm Being Gang Bang Raped Every Day By My Son's Classmate Keiko Hattori

Keiko may have spoiled her son Hideaki more than anyone else. And she, of course, didn't know that her wisdom was now shunned by her classmates. One day, Hideaki, who has decided to go to school by recommendation, brings his classmates home saying, "I'll teach you to study." Keiko thought it was a casual scene, but in fact, at this time, the within them were on the verge of exploding.