Kaoru has always been soft on her son. When her son said he was going to a mixer today, she gave him his pocket money despite her husband's warnings. That night, her son came home late. He quietly opened the sliding screen and peeked into the bedroom. There, his parents were having sex. A few days later, her son was masturbating, remembering his mother's lewd behavior. Without realizing it, Kaoru entered the room. Kaoru swallowed her saliva as she saw her son's erect crotch. One day, Kaoru was masturbating, remembering her son's dick. Then her son came in...