Yumiko, who has been preceded by her husband, decides to live with her daughter's couple. The daughter and his wife gladly accepted Yumiko, and the lives of the three family members began. Yumiko, who couldn't sleep at midnight, noticed the sound leaking from her daughter's bedroom. When I sneak a peek, my daughter and her husband are running. I returned to the room thinking that I was on good terms. And a few days later. The activities of the daughter couple that started as usual. Yumiko sneaked in again and indulged in masturbation while watching the activities of her daughter and her husband. The next day, it would be nice for her daughter to go on a trip, Yumiko pretended to be calm while grinning inwardly. And the day my daughter travels. When I asked him about his son-in-law, he was dealing with his crotch alone. Yumiko Enters the son-in-law's room in the guise of chance. He said it was good for his shy son-in-law and gently smiled to help him ...