One day, Yuka - Yuzuru's mother-in-law suddenly came to ask for accommodation. It turned out that a friend of Yuka suggested her to become a lingerie model. Living her whole life for her husband and children, she also wanted to do something for herself. Of course, Yuka's husband strongly objected, she got angry and left, going to her daughter's house in Tokyo to ask for a place to stay. In order to calm his mother down, Yuzuru and his wife suggested that she stay for a week, during which they would figure out how to soothe her. That night, Yuzuru wanted to go to the bathroom, as he was going he noticed light coming from his mother-in-law's room. It turned out that she was trying on lingerie, seductive sets that were mesmerizing. Yuzuru couldn't control himself and involuntarily reached into his pants. Yuka also noticed this. The next day, she actively asked Yuzuru to take a photo of her wearing lingerie to send to her friend. Seeing his beautiful mother-in-law wearing such provocative lingerie right in front of him, Yuzuru couldn't resist anymore! He rushed over to touch, kiss all over his mother-in-law's body. At first, Yuka protested, but the stimulation, as well as the exquisite skills of her son-in-law, awakened the desire buried deep within her for so long. It had been a long time since she had been treated like "a woman", Yuka disregarded everything, she just wanted to immerse herself in sexual activities with Yuzuru during her stay here for a week...