Among the Asian countries, Japan is probably the most racist for punting. There are areas in Tokyo where touts will approach you and these places tolerate foreigners. However, in many good places, they won't let you in unless you speak Japanese fluently (and even then not always). A lot of girls don't speak English and they fear there will be a communication problem. In reality, it hasn't been an issue for me in many countries, once you're in the bedroom you can usually be understood non-verbally.
Had an interesting encounter in Riga a year ago, found a girl offering anal at an inexpensive price. She was living outside the city and I paid for a taxi to get to what turned out to be grim council house type apartment buildings. I spoke to her on the phone and now she refused to see me as I was a foreigner. I complained that I'd already spent half an hour to get there and it was now raining heavily. She finally relented and gave me her apartment number. Session itself was like nothing I've experienced before. She pulled down her jeans and knickers to her knees while clothed on top, knelt on the sofa and offered her arsehole. No other services and it was an uncomfortable angle due to the low height of the sofa. Plus she kept saying we had to be quiet due to the neighbours. Strange but erotic in its own way, felt like I was hurriedly fucking the girl next door before the parents returned.