I've never been to Japan but I will get there eventually I hope.
I have watched many documentaries on this topic.
The bars for female clients are by far the most prolific I think.
The object would seem to be the maximum extraction of cash from the clients through rituals loosely connected to the erotic but never bringing anything to a 'head'
I would love hear from a member who has experienced the gay version.
Of course this documentary will be one of many now when the western carpet-baggers arrive to demonise anything in another culture that offends them and to profit on the process.