Chop pork, tofu, onion, spicy green chili, and green onion into small pieces.
Add sesame oil to a pot and stir-fry the pork.
Add onion and green onion, and continue stir-frying until the pork is cooked.
Add doenjang (soybean paste), gochujang (red chili paste), and minced garlic, then mix well.
Pour in water and add tofu, then simmer over medium heat.
Add spicy green chili, adjust the consistency, and simmer over low heat.
Season to taste with salt and pepper if desired.