Two years after her husband passed away, Kasumi began living with her daughter and son-in-law. She no longer felt lonely, which was a great relief, but there was one problem. Her nighttime lovemaking could be heard. Her body would get hot no matter what, so she would secretly console herself. But one day, her son-in-law found her masturbating, and in his excitement, he attacked her. She resisted, but he inserted his fingers and vegetables into her private parts, and she felt pleasure. When Kasumi heard her son-in-law's troubles, she was seduced and ended up having a relationship with him...