Crack 4 eggs into a bowl and whisk them until smooth.

Add 1/2 tsp mirin and 1/2 tsp tuna sauce to the eggs and mix well.

Chop 10 stalks of green onion finely and mix them into the egg mixture.

Heat a non-stick pan over medium heat and add a sufficient amount of oil.

Pour a thin layer of the egg mixture into the pan and cook until it begins to set.

Roll the egg gently from one side to the other using a spatula.

Push the rolled egg to one side of the pan, add more egg mixture, and repeat the rolling process until all the mixture is used.