Yui lives alone with her son Takahide while waiting for her husband, who is working in another city. After more than three months of separation from her husband, the suppressed desires deep within her begin to surface uncontrollably. Her body instinctively seeks pleasure, touching herself daily. One day, she lures her son's friend, Tomoma, into her home and molds him into her ideal partner to satisfy her lust. However, mere physical gratification is no longer enough, and a new curiosity begins to stir inside her. One day, she accidentally sees her son Takahide's penis and feels her heart race at the sight of her now-grown cherry boy son. Unable to contain her emotions any longer, she gives in to her overwhelming desire.