Six months ago, Chiyuki's daughter and her boyfriend came to greet her about their marriage. At that time, they talked about living together, and Chiyuki, who had been widowed, thought she would feel relieved in various ways and readily agreed. Since then, a communal life with her daughter's couple and Chiyuki began. From that day on, Chiyuki often felt tormented by the couple's nighttime activities on the second floor. Half a year later, both her daughter and son-in-law were often acting separately due to work and friends. One day, her son-in-law was sleeping alone. Chiyuki, who couldn't stand it anymore, tentatively had sex with him at night. Just once, I want you to hold me...