Sex Education  

Amazuppaku Fujun na Bokutachi no..., Gaki no Koiji ni Te wo Dasuna, セックス・エデュケーション

Satoris mother passed away, and his father met a new woman named Michiko at an S&M club. She moved into their home with her "slaves." Now, Satoris's father has become one of Michiko's slaves, and he is helpless as she subjects him to slave training, while Satoris is subjected to the same treatment.