Mix soybean paste, chili paste, chili flakes, garlic, ginger, rice wine, rice syrup (or honey), sesame oil in a mixing bowl. Add the squid and shrimp and toss well to coat.
Heat oil in a skillet over med-high heat. Add the onion and saute until soft, about 2-3 minutes. Add the seafood mixture and continue to saute until they are fully cooked, about 2-3 minutes. DO not overcook.
Add the green onion and toss quickly. Sprinkle with sesame seeds and serve hot with rice.