Sex education for Momoka Nishina's teenage son

Momoka has a son who just graduated from high school, this is the age when boys start to be curious about their gender. One day the boy's friend came to visit and when he saw Momoka's smooth body, the boy couldn't help but want to do adult things with her. Her son accidentally discovered it and from then on he wanted his mother to be only his own...

Sex education for Momoka Nishina's teenage son