Two years into her marriage, Rena Aoi harbored a secret she kept hidden from her husband. Before getting married, she had met a man at her part-time job and started a romantic affair with him, a relationship she never managed to end. Although she lives as a married couple with her husband, her lover offers better sexual chemistry, satisfying each other's desires, leaving a part of her emotionally unable to break free. One day, while shopping with her husband, Rena suddenly receives a video from her lover—evidence of their ongoing infidelity.