One day, Akemi, a mother, happened to come across her son after taking a bath in the changing room. She felt embarrassed when her son stared at her in her shapewear, and while she was asking her son if he had washed his dick properly, her son's dick got erect in response to her mother's dirty talk. Akemi was surprised at the size of her son's dick and instinctively put her hand on it... Since then, Akemi has not been able to forget her son's dick...