... OP sounded like he was asking about "Asian non-Korean", didn't he?
In fact, if anyone can tell about a proven good Japanese or Vietnamese (OK, Chinese too ) currently available, I too would like to know. Desirable has someone half-J, and a nice fresh looking Chinese girl Lucy, both well reviewed. On my list, but not yet. It seems that Asian providers there are more on the Americanized side.

One warning to share - if you come across Vivi, Vietnamese, with a somewhat TGTBT picture and below average rate - this is not a complete rip off, but the pic is VERY misleading. The actual provider was much older and kinda sad... although w good attitude and clean habits.