1. Crumble the tofu into a pan and sauté, cooking off the moisture.
2. Add the onion and garlic, and sauté until the onion is cooked through.
3. Add the ssamjang, gochujang, tuna, sesame oil, and sesame seeds, and mix well.
4. Halve the lettuce leaves and shape into cones, then fill with the high-protein, low-carb tofu tuna and arrange neatly on a plate.