Married woman Ayane spends her days living apart from her husband, who leaves for work early in the morning and comes home late at night, leaving them constantly missing each other. Living in the same apartment building, Ayane has developed a casual habit of meeting with Yuu, a stay-at-home husband, during the day to drink coffee and vent about their lives. Sharing their troubles gradually brings them closer together. As Ayane grows increasingly sexually frustrated, she begins to notice Yuu's lingering glances and impulsively seduces him in the afternoon when no one's around. Gently yet boldly, she starts to manipulate Yuu, drawing him deeper into a relationship that evolves from mere sympathy into something far more intimate.