Cut the pork, kimchi, and onion into bite-sized pieces.
Add cooking oil to a pan and stir-fry the pork.
When the pork is cooked, add the kimchi and onion and stir-fry together.
Add the rice and stir-fry, mixing well.
Taste and season with salt and pepper as needed.
Finish by drizzling sesame oil and sprinkling sesame seeds.