Yuka enjoyed a one-night stand with someone she met through a dating app, never expecting to see him again. But fate had other plans—her husband brought home none other than her lover, Yamamoto. Shocked and terrified, Yuka is horrified by the unexpected turn of events. Desperate to keep her affair hidden from her husband, she forces a nervous smile as she greets Yamamoto. Yet he, still obsessed with her, begins to pressure her relentlessly. With her secret now used as leverage, Yuka has no choice but to surrender her body. This story unfolds the intense emotions of betrayal, forbidden desire, and the crumbling of trust within a marriage.