Niina, a married woman struggling in her relationship, throws herself into work to cope with the stress. At home, the cold atmosphere between her and her husband only leads to another argument. Exhausted by this endless cycle, she dreads returning home—until her coworker Kazuya gently stops her from leaving. Noticing her distress, he offers her a cup of carefully brewed coffee, hoping to comfort her. His small act of kindness touches her deeply, giving her a glimmer of hope. But when he suddenly confesses his feelings, Niina's emotions are thrown into turmoil. For the first time in a long while, she feels loved not as a wife, but as a woman. Drawn into the forbidden pleasure of betrayal, she surrenders to the passion, embarking on a new romance filled with creampie sex and intense desire.