Japanese Onigiri and Jumeok Bap are similar, but not exactly the same. They are both seasoned rice balls. But there’s slight differences between the two.
In general (but not always), Onigiri is triangular with fillings placed in the center of the rice ball. Jumeok Bap is round like a ball with the fillings mixed throughout and a dusting of crushed Gim (roasted seaweed) on top. They are similar but not exactly the same.