Mai Ko Kashiwa lost her husband and began living with her son and his wife after his third-year memorial service. Initially tense with her daughter-in-law, she gradually settled into family life. But in the absence of her husband, Mai Ko grew lonely, her body aching with desire, and she began masturbating daily. Late one night, as she pleasured herself again, her son caught her in the act. At the very moment she reached climax, he appeared and forcibly thrust his hard cock into her resisting body. Though taken against her will, Mai Ko eventually gave in to her son’s repeated advances. Over time, she found herself increasingly drawn to him. Then one day, something changed—her period stopped. Feeling her womanhood slipping away, Mai Ko told her son the news and said she wanted to end their relationship…