Prepare oatmeal and water.
Add oatmeal and water to a pot and cook over medium-low heat, stirring occasionally.
Once the oatmeal porridge is ready, transfer it to a bowl.
Fry an egg sunny side up with a little oil until half-cooked.
Place the egg on top of the oatmeal.
Sprinkle soy sauce, sesame oil, and seaweed flakes to finish.