She went to her husband's parents' house to visit the grave of his mother. Konatsu let her guard down with her kind father-in-law, but her husband didn't pay her any attention and she was caught masturbating. The next day, when they were alone, her father-in-law approached her and said that he could satisfy her better. At first, Konatsu resisted, but she became addicted to the pleasure as her father-in-law made her cum over and over again...