Shizuka lost her husband and lived alone after her daughter left home to get married. Her daughter asked her if she could live with her as she was being transferred to a branch office close to her parents' house, so she started living with her daughter and her husband. Her daughter has been busy with work recently, and her relationship with her husband has become a little strained. One day, Shizuka sees her son-in-law's naked body as he comes out of the shower. It's been a long time since she's seen a member of the opposite sex naked. She feels strange and masturbates. That day, Shizuka was masturbating in the kitchen. Her son-in-law saw her. Embarrassed, she tried to hide her body. His son-in-law pulled her close, saying, "Let me comfort you."