A mother, Yui, who lives with her only son, Takahide, waiting for her husband who is away from home. She lives away from her husband for more than 3 months, and her life doesn't fit, and her body naturally gropes her crotch. She lured her son's friend Yuma there and trained her to be her favorite partner and let out her sexual desire that had accumulated in her pool, but she just devoured her carnal desire. she was not satisfied. At one point, Yui, who witnessed her Takahide's cock, couldn't hide her excitement at one of her virgin sons who had grown up fine.
