"Couple's Course" is so popular at a certain esthetic salon that there's a two-month waiting list. The reason for its popularity... is that while the husband is present, a male esthetician gives the wife a lewd massage, and in the end, he "rapes her anus." This course is too indecent, with husbands saying things like, "If it's just the anus, it doesn't count as cheating." And then there are three super slutty beautiful wives who open their anuses even with their husbands by their side.
