Finely chop the kimchi and tuna.
Heat oil in a pan and stir-fry the kimchi.
Add the tuna and stir-fry together.
Let the stir-fried tuna and kimchi cool down.
Mix the rice with the stir-fried tuna and kimchi.
Season with salt and sesame oil to taste.
Shape the mixture into rice balls by hand.
Wrap with seaweed to finish.