Japanese Fried Rice ala St George

Yuni and Vero introduced me to St George, Seattle in 1998 and this was my first dish. It leads me and later, my brother too, to simple addiction and almost weekly ritual of dining in this resto for the next 2 years ... very boring, yes, but can't resist the temptation of enjoying simple food with great taste, even bear the strong cigarette smokes :p...
Ingredients:
2 cups of Japanese rice, already cooked
Tomato sauce to taste
1 tbsp of Worcestershire Sauce (indo: kecap Inggris)
1 tbsp of mirin
seasoning: pepper, sugar, salt
1 chicken breast, diced to small cubes
0.5 big onion, diced to small cubes
How to make:
Cook like usual fried rice and then top with omellette should do it...