Dice the tomato and slice the green onion thinly.
Beat the eggs and mix in a pinch of salt.
Add cooking oil to a pan and stir-fry the green onion to bring out its aroma.
Add the tomato and stir-fry over medium heat.
Pour in the beaten eggs and gently stir until cooked softly.
Place the tomato egg stir-fry on top of the rice.
Stir the natto well, put it on top of the rice, and optionally add a little soy sauce or mustard to taste.