After losing her husband, Satoshi's mother, Satoko, became a single parent with just one child. She devoted herself entirely to work and housework, ensuring she didn't want for anything. Her son also safely advanced to ● school and was quite popular in his class, which relieved Satoko. One day, her proud son asked if he could have a friend over to stay, and Satoko immediately agreed... Little did she know, this would be the start of her being raped by her son's friend and developing a penis addiction.
