Clean the squid thoroughly and cut it into bite-sized pieces.
Slice the onion, green onion, carrot, and bell pepper into thin strips.
Heat cooking oil in a pan and stir-fry the vegetables.
Add the squid and stir-fry, then add low-sodium gochujang, soy sauce, chili powder, and minced garlic.
Stir-fry everything over high heat until all the ingredients are cooked.
Turn off the heat and mix in sesame oil and black pepper.