Shuri, a mother who raised her daughter alone after her husband passed away. Her well-raised daughter got married, but she continued to live with Shuri. One day, while living a plain but happy life, she happened to peek at her daughter and son-in-law's nighttime activities and was shocked. Her gentle and serious son-in-law was making her daughter cum like crazy with his beast-like, intense thrusting. Seeing that figure, the [memories of a sex-addicted creampie slut] came back to life, and she couldn't suppress her sexual desire...