Rice of Korean version of norimaki (gimbop) is seasoned with sesame oil and salt, I think. Usually include takuan, imitation crab (kani kamaboko), spinich, etc. I like getting them at Korean markets. Probably influenced by futomaki.
There are a variety of Japanese dishes transformed into Korean dishes. If you go to Koreatown, you may find restaurants that serve Korean version of Japanese dishes.
On a separate note, there are lots of "Japanese" or "sushi" restaurants owned and operated by Koreans in the U.S. I find that many of them skimp on the quality of foods, especially rice. They usually advertise on low priced sushi. When I happen to end up with one of these restaurants, I usually stick with chicken teriyaki or bulgoki. They're great at BBQ's!