Soak oatmeal in water for 10 minutes.
Chop the kimchi into small pieces.
Add sesame oil to a pan and stir-fry the kimchi.
Add tuna and stir-fry together.
Pour in the soaked oatmeal and water, then bring to a boil.
Simmer on low heat, stirring until it thickens into porridge.
Season with salt to taste.