GG-189 Mom's Real Sex Education Nanako Mori

Nanako lives with her son. One day, Nanako is forced to have a relationship with her man, and she reluctantly allows him to have a relationship with her. During the act, the son returns home and is surprised to see his girlfriend's mother. When her son saw them having sex, she told Nanako that she had an erection, and he asked her to teach him about a woman's body as well. Although she is at a loss, Nanako accepts her son as part of her sex education...