Is this the ultimate test of fidelity? Not yet married yet seeing just how they go while their partner watches!

Curious Japanese couples temporary separate while the girlfriend receives a full body oil massage that leads to some truly explosive sex!

Remember: free lunches do not exist. If a nice guy asks your girlfriend if she wants an oil massage and there is no catch, THERE IS A CATCH!

Japanese couples looking to combine having a good time with some very audacious ice breaker games take part in one hosted by Riri Kouda.

The potential best in the series thanks to some truly daring casting. From BBW to gyaru and everything in between.

Sex-ed taught and enacted for the advancement of proper student education. Featuring Rena Fukiishi as a specialized teacher who has sex in front of everyone.

Everyone knows hands-on education is the best way to commit something to memory and as we see in this Japanese school, this is carried out in unique ways.

Erotic massages provided to girlfriends eager to pad meager paychecks remotely featuring boyfriends who wait in bliss.

One way mirrors make for the strangest happenings as eager girlfriends receive full service massages while their boyfriends wait outside.

Eager to get low paying jobs (welcome to Japan), students nearing the end of their vocational schooling take part in hands-on demonstrations.

Soon to be married and wanting to look their best for the big day, eager women seek a masseuse who provides what in Japan is called "plus alpha" services.

Messy and looking to keep her job (albeit with low pay!), Sumire Matsu, former gyaru JAV star and now office lady, does the unthinkable.