The basic premise is this- a dozen or so lucky guys win a drawing to spend an erotic dream weekend with their favorite JAV actresses. They all board a tour bus and are whisked away to a large, secluded luxury spa resort ( called an onsen ) for all sorts of erotic and sexual games. The action starts as soon as the bus takes off- handjobs, blowjobs, fingerjobs for the women, even full-on sex.

My favorite scene in all the ones I've watched is where they all split off into teams, with each guy taking turns having 3 or 4 women all working him over at the same time. Having two gals riding your dick and fondling your balls, with two more gals sucking your tits and tongue-kissing you, has got to be a mind-blowing experience. The final event is a no-holes-barred orgy where anything and everything goes.

Three of Japan's biggest JAV producers, Moodyz, Soft On Demand, and Karma, produced these for several years before they abruptly stopped a few years ago. A few well-known JAV actresses I would see over and over again in these include Mana Izumi, Rumika, and Kirara Asuka.

[Link]