After settling into married life, Kou Shirahana began to desire children but was troubled by her husband's erectile dysfunction. One day, her husband, who also felt insecure about his body, told her about a "cuckolding service." Although she initially felt only distrust, she noticed her husband's excitement at the sight of her being taken by another man, and soon found herself unable to resist the strange world. Eventually, the insatiable wife awakened to the pleasures of being cuckolded, eagerly seeking out multiple thick cocks and climaxing intensely.