[xor1]

The primary middleman ethnicity for restaurants where I live (Southern California) is Korean. There's lots of Korean-run places for the following non-Korean cuisines (in descending order for the quantity I've seen): Japanese (sushi & ramen), Americanized Chinese (distinct from Korean-Chinese cuisine, e.g. Jajangmyeon), Vietnamese, Mexican, Thai, Middle Eastern. There's some Korean fried chicken places, but I think that's kind of its own style, and is still advertised/branded as Korean. All of the aforementioned places don't make any mention of it being Korean-run. Though some of them will have things on the menu you wouldn't find at a non-Korean-run place, like kimchi.

[tootie]

There's a lot of overlap between Korean and Japanese cuisine. Koreans eat sushi, although not as voraciously. They both use the dark sesame and soy sauce. Ramen/ramyun and soba/naengmyun are the same things. Yakiniku is a cuisine that is basically Japanese-style Korean BBQ. I've also seen places in SoCal that just advertised as being Korean-style Vietnamese. I have enjoyed them all when done right :)