A lonely Sumire was left behind by her husband shortly after their daughter got married and moved out. Her daughter and son-in-law would often spend weekends together to cheer her up, helping her forget her loneliness. During this time, Sumire found solace in self-pleasure while watching her daughter and son-in-law's intimate moments. One day, when they were supposed to go out but her daughter had to work, she and her son-in-law ended up alone together that night. As thanks, Sumire gave him a massage which made him too aroused. Seeing his condition, Sumire took responsibility...*Distribution method may vary depending on the recording contents.