Cut kimchi and pork into bite-sized pieces.
Heat sesame oil in a pot and stir-fry the pork.
Add kimchi and red pepper flakes and continue stir-frying.
Pour in water, add minced garlic and green onions, and bring to a boil.
Add soft tofu and gently break it up while simmering.
Taste and season with salt or soy sauce as needed.