One day, Akemi accidentally runs into her son in the changing room right after he finishes bathing. Trying to hide her voluptuous figure with shapewear, she feels embarrassed as her son stares at her intently. When she teasingly asks him, "Did you clean your cock properly too?", she's startled to see his penis react immediately, growing fully erect. Shocked by its size, Akemi instinctively reaches out and touches it. From that moment on, she can't stop thinking about her son's cock, consumed by forbidden desire.