Due to marital stagnation, the Nami couple has fallen into a sexless relationship. The husband feels deeply apologetic, while his wife Haruka endures physical discomfort day after day. One day, the husband becomes intrigued by online stories about "cuckold inducement" and finds himself aroused by the idea. He eventually proposes to Haruka that they try it. Naturally, she refuses at first, but after persistent persuasion, she reluctantly agrees, bowing down in dogeza to beg for forgiveness. They proceed to have sex in front of her husband, and though overwhelmed by guilt and taboo, intense pleasure begins to surge uncontrollably. With her husband watching nearby, the erotic experience intensifies—Haruka tries to hide her pleasure, but ultimately cannot suppress her overwhelming sensations.