Yumi, who lost her husband, has raised her son Nobuyuki single-handedly. It seems that her son recently had a girlfriend, and she secretly watched over her while harboring mixed feelings, but one day she was worried that her son could not satisfy her with her premature ejaculation. can confide. Her troubled Yumi decides to give her son sexual training. She tries to get used to her stimulation with handjobs and blowjobs, but her premature ejaculation is not cured, and eventually Yumi uses her own body to teach her son about sex.
