Extremely Inran Women: Osaka Lewd Cafe (1995)

Couples cafes are a lot more extreme than companion cafes. They allow you to see other people having sex, something you wouldn't normally see. If you get excited watching, you can then show off your own play. The man gets harder than when they're doing it alone, and the woman gets soaking wet. Kazuhiko and Reiko are a married couple who have fallen for the charms of couples cafes. Once or twice a week, they leave their child with their father-in-law, Norio, and go to a place called Jewel in Umeda to enjoy some fun...