Yumi, a mother who raised her only daughter splendidly after her husband passed away. Her splendidly raised daughter got married and lived together with them. One day during their ordinary yet happy life, something happened. She accidentally saw her daughter and son-in-law's night activities and was shocked. The mild-mannered and serious son-in-law was fucking her daughter like a beast, making her cum over and over. Seeing that, 【The memories of sex addiction and in-out slut】 resurfaced, and she couldn't control her sexual desires anymore...
