H-cup Kahori, a huge fan of swinger bars, asks another couple to cuckold her husband. She and her I-cup friend Nana swap husbands and begin kissing the other men in front of their wives. Seeing their husbands harder than usual leaves the women both jealous and aroused, leading to reverse threesomes. They smother the submissive husbands with their voluptuous bodies, titjobs, and close-contact riding until one husband creampies the other man's wife.