Mother and son have sex in 2 seconds after father goes out

Rika has a secret that she can't tell her husband. That meant that it had become a relationship between a son and a man and a woman. I know it's not acceptable. However, her older husband's energy has been declining recently, and Rika has not been able to have a satisfying night. Rika was completely engrossed in her young son's hard, thick cock. However, one day... her husband finds out that she has an affair with her son...