That JAV

A married woman in her third year of marriage lives with her husband's father. The wife, frustrated because her busy husband is often away on business trips and they have no conjugal activities, masturbates, but her father-in-law grins at her when he sees her doing it. One day, a courier comes to the house to have sex with the wife, but again the father-in-law peeks in. The father-in-law then uses the masturbation and the fact that he witnessed the affair as a story to demand his wife's body. The father-in-law threatens to tell his son about the affair, and the wife opens her legs, but they are still wet. She is crawling in the night, and her father-in-law, whom she hates, makes her come again and again.