Yu was heartily congratulating her daughter for getting a boyfriend. She would often invite him over for dinner, and as a mother, she watched over the young couple with a warm heart. But at the same time, she felt lonely. Her daughter was becoming more feminine, while her marriage life was getting weaker and weaker, and she was not satisfied with it. Yu forgot that her daughter and her boyfriend were in the next room and indulged in masturbation. She was so immersed in the pleasure that she didn't notice her daughter's boyfriend peeking at her with an excited look on his face, and she started to provoke him with her bold fingering.