Yuriko, whose husband had passed away before her, decided to live with her daughter and son-in-law. One night, unable to sleep, Yuriko heard noises coming from her daughter's bedroom and peeked in to find them having sex. A few days later, while secretly watching her daughter and son-in-law again, Yuriko was masturbating herself. Later, during her daughter's trip, Yuriko noticed her son-in-law's behavior and found him alone, touching himself. Yuriko pretended to enter his room by chance and smiled gently at the embarrassed son-in-law saying it's okay...
