Wash all vegetables thoroughly. Shred napa cabbage, julienne carrot and cucumber, and thinly slice red bell pepper. Chop green onions and place all vegetables in a large bowl.In a small bowl, whisk together soy sauce, rice vinegar, sesame oil, honey, minced garlic, and gochugaru. Season with salt and pepper to taste.Pour the dressing over the vegetables and toss gently until evenly coated.Garnish with toasted sesame seeds and cilantro. Add optional toppings like sliced chili or crushed peanuts if desired.Serve immediately or chill before serving for enhanced flavor.