After losing her husband, Nozomi and her son have been living alone together. But as her son grows older, their once-close relationship begins to shift. As he starts dating, Nozomi finds herself increasingly lonely, unable to genuinely celebrate his new romance. She feels anxiety and conflicting emotions about his maturity. Her deep affection for her beloved son twists into misunderstanding and confusion, frustrating him while she herself becomes consumed by her own desires. Calling out her son's name, she indulges in masturbation using the same techniques that once captivated her late husband, stepping into forbidden territory. For her, this act becomes a way to keep her memories of her husband alive. Meanwhile, though initially bewildered, her son gradually finds himself drawn to his mother's intense affection. The strange bond forming between them plunges into a shocking depth of unspeakable maternal love, crossing into new emotional boundaries.