Cut the chicken breast into bite-sized pieces.
Cut the kimchi into pieces for easy eating.
Slice the tofu and green onion.
Heat some cooking oil in a pot and stir-fry the chicken breast.
Add the kimchi and stir-fry together.
Add water, minced garlic, soy sauce for soup, and red pepper powder, then bring to a boil.
Add tofu and green onion, continue to boil, and season to taste.
When all the ingredients are cooked through, it's ready to serve.