A J-cup married woman's affair with a classmate is discovered by her husband, leading to a humiliating and public NTR. In the fourth year of marriage, the wife, dissatisfied with her husband's erectile dysfunction, has an affair with a middle school classmate. When the husband finds out the truth, he demands that she show him the affair as a condition for not divorcing him. The wife reluctantly agrees. In the awkward atmosphere, the husband's emotions as he watches his wife and her lover having sex gradually turn to excitement... and an unexpected threesome unfolds! A real documentary NTR where shame, jealousy, and pleasure intersect.