One day, almost a year into her marriage, Natsuki, a wife, finds her husband, whom she trusted, cheating on her. Feeling anxious and sad, Natsuki visits the home of Abe, a friend of her father's, with whom she used to play often as a child... Natsuki breaks down in tears in front of Abe, who sympathetically listens to her story. Abe then embraces her tenderly. From this moment on, subtle feelings begin to flow between the two. Abe is flustered by Natsuki approaching him as innocently as he did as a child, but he also begins to sense her as a woman...