ถึง madaussiehere :When i lived in Phnom Penh I used to go to an "Urban Resort" a gay men's nudist club - it was a house with a big privacy wall all around and great gardens and a swimming pool with little cabanas all round. As you enter you choose a masseur boy. He takes your clothes and washes you in the shower then gives you a really good massage and a blow job, or he's available to be fucked. He washes you again and go to one of the cabanas and order drinks and food. Other men walking around with cocks in various stages of erection looking for a friendly mouth or asshole.
ถึง madaussiehere :Generally "No" - onsen spas are traditionally single sex/gender only. In recent time Japanese authorities have become very angry with foreigners who think pornography is real life, result is authorities have shut down many onsens - boo hoo.