Cut the chicken breast into bite-sized pieces.
Slice the onion thinly.
Heat oil in a pan and stir-fry the onion and chicken breast.
Add soy sauce, cooking wine, sugar, and minced garlic, and stir-fry.
Place the stir-fried ingredients over rice.
Add an egg, cover with a lid, and cook until the egg is soft-boiled.
Finish by sprinkling green onions and seaweed flakes.