Cut the thinly sliced pork belly into bite-sized pieces.
Slice the onion and green onion thinly.
Add cooking oil to a pan and stir-fry the green onion and onion.
Add the pork belly and stir-fry over high heat.
Season with soy sauce, sugar, minced garlic, and pepper.
Place the stir-fried pork belly and vegetables over rice.
Finish by drizzling Yuji (ghee) to taste.