Japan has superior martial arts but not sure how they view a westerner learning it
I lived there for ten years. It's not as bad as people are making it out here.
I even lived in a small town. I never experienced any of the "anti-gaijin" stuff people complain about.
BUT, you need to speak Japanese. If you can speak Japanese nobody really cares.
I knew a dude there who was from some African country.
He learned fluent Japanese, married a Japanese lady and got a regular job teaching (not English) at a Japanese high school.
I also knew another guy who spoke fluent Japanese and taught music (in Japanese) at a university.
I've also known plenty of guys who went there in their 20's, learned the lingo, got married to Japanese ladies, and had a family.
To all folks who want to go to Japan, forget the naysayers.
Just realize you'll need to learn the language if you want to fit in.
If you're willing to learn the language, you'll have a blast.
I lived in SK for a year, not long enough to learn the lingo well enough, so I don't have sufficient data.
But I imagine it's more or less the same.
If you can speak the language and are "normal" you won't have a problem.
I would say if you speak just a little of the language (Japanese or Korean) you'll find plenty of ladies for some short time fun.
Don't know what they call them in Korea, but in Japan they are called "Gaijin Hunters."