Cut the pork belly slices, onion, and green onion into bite-sized pieces.
Heat oil in a pan and stir-fry the pork belly slices.
When the meat is halfway cooked, add onion and green onion, and continue stir-frying.
Add soy sauce, sugar, minced garlic, and pepper for seasoning.
Simmer and stir-fry until the ingredients are cooked through and the sauce thickens.
Place the stir-fried pork belly and vegetables over rice.
Finish by sprinkling with sesame seeds and chopped green onion.