Three years into their marriage, the husband's father-in-law moved in after his wife passed away. One day, while dozing off from exhaustion due to housework, he was raped by his lustful father-in-law. Masami, who had been sexless, was driven to ecstasy by the middle-aged man's sticky full-body caresses and skilled techniques, becoming addicted to perverse, intense sex. She fell into a relationship with her father-in-law that she couldn't tell her husband about... ※A bonus video is included after the main story.
