Incest mother-child favoritism

Reiko, a wife, lives comfortably with her husband, Kenzo, who is the president of a construction company, and their only son, Kosuke, who is like a friend. However, she had one complaint. It's her sex life with her arrogant husband. I haven't had a night life for over 10 years because I couldn't get along with my girlfriend who has a sadistic personality. One day, Reiko indulges in an affair with a submissive man she met on a dating site. However, when her husband finds out, Reiko is forced to live an celibate life and is in agony, and her lower body desires are targeted at Hirosuke...