SW-1037 - Couple exchange and swapping! A wife with NTR desires wants "to be done by men other than my husband!"

Three couples came on a hot spring trip for the neighborhood association. A sullen and lewd elderly couple is seduced by their neighbors, a couple of sexually vigorous men, and they are forced to have another man's penis thrust at them and devoured in front of their husbands. As the husband begins having sex with another woman nearby, the pleasure of inserting another man's penis is doubled by the excitement of watching and being watched. The wives become obsessed with penises other than their husbands in the bathroom, hallway, and on the futon.