Nanako decided to live in her father-in-law's house who was living alone with her busy husband. Her husband was a working man and Nanako was dissatisfied. It was her father-in-law, Genzo, who treated Nanako kindly. Nanako gets peace like a real couple with her father-in-law who spends more time on behalf of her husband who spends less time. Then, one night, Nanako, who was lonely with her husband who had fallen asleep earlier, went to her father-in-law's bedroom and rubbed her skin against her quietly sleeping father-in-law.