Husband constantly away due to work, Sakura found herself alone night after night. To cope with the loneliness, she turned to masturbation, desperately seeking release. But what began as an escape soon became an uncontrollable habit. One day, while her son's friends were visiting, she couldn't resist the urge and began pleasuring herself—only to be caught in the act. In that shocking moment, overwhelming and unexpected emotions surged within her, awakening desires she had never known before.