Soak seaweed in cold water and rinse.
Drain the oil from the tuna using a strainer.
Finely chop the kimchi.
Soak the oatmeal in water for about 5 minutes beforehand.
Heat sesame oil in a pot and stir-fry the kimchi and seaweed.
Add tuna, oatmeal, and water, and bring to a boil.
Simmer over low heat for 10 minutes, stirring occasionally.
Season with salt or soy sauce to taste.