01 - Combine soy sauce, brown sugar, sesame oil, rice vinegar, garlic, ginger, black pepper, green onions, and gochujang in a bowl. Add steak slices and toss to coat evenly. Marinate for at least 20 minutes, or up to 2 hours for deeper flavor penetration.
02 - Rinse rice under cold water until the water runs clear. Combine rice, water, and a pinch of salt in a pot. Bring to a boil, reduce heat to low, cover, and simmer for 12–15 minutes until tender. Remove from heat and let stand covered for 5 minutes before fluffing.
03 - Whisk together mayonnaise, Sriracha or gochujang, lime juice, and honey until completely smooth. Refrigerate until ready to serve.
04 - Heat a grill pan or skillet over medium-high heat. Sear steak slices in batches for 1–2 minutes per side until just cooked through with caramelized edges. Avoid crowding the pan to ensure proper browning.
05 - Divide warm rice among serving bowls. Arrange seared steak, shredded carrots, julienned cucumber, chopped kimchi, and salad greens over the rice. Drizzle generously with spicy cream sauce and garnish with toasted sesame seeds and sliced green onion. Serve immediately.