I never seen the real lesbian brothel in real life before. I wonder where all those located.

Im not sure they really exist lol.

It is probably more along the line of escort services that cater for both? So sure their are lesbian prostitutes but I doubt many or any physical brothels cater to JUST lesbians - you'd just drastically lower your customer base - and some kinda phone / web only service for lesbians would probably work better to fill the niche?

They do exist. There are actually a handful of lesbian-only brothels and escort services in the gay quarter of Tokyo. Complete with online profiles for the girls with their "type" (ie. boyish type. big sister type. sexy type) and whether they're top, bottom, or switch.

Yuri Shinjuku, for example, which even has an english version of their website: https://yuri-shinjuku.net/system.php?lang=en

last edited at Aug 24, 2020 3:51PM

I think one of the things with Kurokawa's friends is cultural. In japan they have several different words for 'friend', including ruitomo which is a hobby friend, or a friend based on having the same interest or personality. This is fairly common and since this type of friend isn't based on deep feeling or connection but just because you're into the same thing, it's easy to understand why the friendship would dissolve so easily if the person started deviating from whatever that shared interest or hobby is.