Slice the squid, pork belly, and vegetables into bite-sized pieces.
In a bowl, mix together gochujang (Korean chili paste), chili powder, soy sauce, sugar, minced garlic and other seasonings.
Marinate the squid and pork belly with the sauce.
Heat cooking oil in a pan and stir-fry the pork belly.
Add the squid and vegetables to the pan and stir-fry together.
When all the ingredients are cooked through, finish with sesame oil and toasted sesame seeds.