Win Prize Money If Your Husband Can Withstand 20 Minutes Of Yu Kawakami's Technique! If You Cum Your Wife Gets Taken Away For Creampie Sex!!
The premise is gameshow-like and rather simple: The crew "picks up a couple from the street" and invites them in. They're presented with the game. The guy is going to be seduced, fondled and fucked by Yu Kawakami who tries to get him to cum within 20 minutes. If she doesn't succeed, meaning the guy didn't cum at all, he wins a cash prize.
The catch is that his girlfriend is being taken off to a room nearby, where she can watch her boyfriend on a screen. If he fails by cumming, then a virile JAV actor is going to have the pleasure of putting a creampie inside the pussy of the challenger's girlfriend. The girlfriends that are called upon are pretty squeamish and are stalling the movie quite a bit, but maybe you're into that.
The last girlfriend is being pretty cute, though is acting really badly. More than once, she tries to pull Yu away from her boyfriend, but she always laughs a lot and can't stay serious. Not sure if that's intentional, I would've liked if she was actually regretting it once she saw a porn actress straddle her guy. Anyway, these movies are very long-winded, with a lot of talking, be prepared for that.
When they're not talking, Yu is dressed nicely while sucking guys off, riding them cowgirl and letting the challenger fuck her from behind. The girlfriends do much the same, though you often have some missionary there. One girl even gets fuck on top of her boyfriend for a bit, while he's tied to a chair.