Mix soy milk, soy sauce, and mirin to make the sauce.
Cut cabbage, onion, carrot, and pork into bite-sized pieces.
Add cooking oil to a pan and stir-fry the pork.
When the pork is halfway cooked, add the vegetables and continue stir-frying.
Add the noodles and stir-fry with the other ingredients.
Pour in the soy milk sauce and mix everything well while stir-frying.
Season with pepper and sesame seeds, then serve on a plate.