Cut the sliced pork belly into bite-sized pieces.
Slice the onion thinly.
Heat oil in a pan and stir-fry the sliced pork belly.
When the meat is half cooked, add the onion and stir-fry together.
Season with salt and pepper.
Place the stir-fried pork belly and onions on top of rice.
Optionally, add green onion shreds or seaweed as a topping.