Meisa loved visiting her father-in-law Tomohiro, who lived alone near their home, and taking care of him. Her father-in-law was always available, unlike her husband Hiroyuki, who had no interest in her. One day, unable to bear Hiroyuki's selfishness any longer, Meisa ran out of the house to her father-in-law's house, where she fell ill with a fever and collapsed. Then, when she found out that her father-in-law had taken care of her like that, she used her illness as an excuse to expose her beautiful naked body in the bathroom and ask her father-in-law to wash her back...