2 couples. First, imposing himself to be someone's wife when he eavesdrop that someone's convo about wanting a wife. Second, being married into his grandmother's friend's grandson as a man-wife. Both "husbands" disliked the idea, but fell for their new wives' wifely duties. Nonetheless, both wives pleasure their husband quite thoroughly and rather imposingly.
[Ridiculously funny]
Yome Ni Konai Ka