Makoto and his wife's mother-in-law moved into the apartment next door to where they live. Makoto and his wife had been worried about his mother, who seemed lonely ever since his father-in-law passed away, and decided to move in together. Since then, they have been getting along well, occasionally having dinner together. One day, Makoto's wife went out with a friend, and while he was alone with his mother-in-law, he accidentally found her masturbation toys. "She saw me..." his mother-in-law said, and Makoto...