Cut the tofu into small cubes.
Chop the kimchi finely.
Mince the onion and green onion.
Heat cooking oil in a pan and sauté the tofu until golden brown.
Add the kimchi, onion, and green onion, and stir-fry together.
Season with soy sauce and chili powder.
Add the rice and mix well while stir-frying.
Finish with sesame oil and sesame seeds.