Soak the oatmeal in hot water for 2-3 minutes.
Drain the oil from the canned tuna and set aside.
Remove excess water from the oatmeal and place it in a bowl.
Add tuna, chopped kimchi, and mayonnaise to the oatmeal, then mix well.
Season with salt and pepper to taste.
Shape into rice balls.
Wrap with seaweed to finish.