Azusa, a married woman, has been married to her husband for three years. After her mother-in-law passed away, her father-in-law was lonely and alone. She decided to live with her husband at her parents' house. Her father-in-law was very kind, just like her husband, and Azusa lived a life of luxury. However, her only worry was that their nighttime activities, which were weak to begin with, were becoming even less frequent and shorter. Unsatisfied with her husband, who would climax before reaching orgasm, Azusa waited for a time when they were out and masturbated, but her father-in-law, who had just come home by chance, had forgotten his wallet and was caught masturbating.