Wash the cabbage and cut it into bite-sized pieces.
Drain the oil from the canned tuna using a sieve.
Finely chop the carrot and onion.
Heat cooking oil in a pan and stir-fry the onion and carrot.
Add the cabbage and stir-fry until it softens, then add the tuna.
Add soy sauce, gochujang (Korean chili paste), and sesame oil, then mix well.
Place the sautéed ingredients on top of rice and sprinkle with seaweed flakes.
Serve with a fried egg and mix well before eating.