Melt butter in a pan and stir fry chicken, onion, carrot tops until the chicken is just cooked.
Add water, ketchup, bouillon, sugar and bring to a simmer over medium heat, stirring frequently until the liquid is almost gone.
Add the cooked rice and stir fry and mix. Season with salt and pepper. Arrange in the plate.
Heat the oil in another pan with high heat. Pour in the beaten egg (with milk) and cook the egg to desired doneness by shaking the pan. Top with the egg over the rice. Put ketchup on the top.