That JAV

A buxom married woman lives with her husband's father. Her busy husband is away a lot on business trips, etc., and they have no conjugal activities, so the frustrated wife masturbates, but her father-in-law grins when he sees her do it. One day, the courier with whom she is having an affair comes over and they have sex, but again the father-in-law peeks in. Then, the father-in-law asks for his wife's body using the masturbation and the fact that he witnessed the affair as a story. When he threatens to tell her husband about the affair, she opens her legs and opens herself up to him. Furthermore, the wife is raped at night and made to come again and again by the father-in-law whom she hates.