A literary mother tied up her son's friend and made her cum inside her slowly, and she was filled with dirty talk.

Yumi (Kazuma Yumi), who has a past majoring in the humanities at a certain famous university, is a wonderful and intelligent woman. There was a time when he aimed to study various literature, but he now has a son who is now married and is now in high school. One day, his son Tomoki brings his friend Takeshi home and decides to stay there because he wants to study. Yumi, who likes the young and cool Takeshi, is a type of person she likes, and while watching her struggle, she is inspired by the sadistic side of Yumi...