1In a small bowl, whisk rice vinegar with 0.5 tsp salt. Add julienned daikon and cucumber, toss gently, and set aside to quick-pickle.
2Heat a large skillet over medium-high heat. Add beef and onion with the bottled bulgogi marinade. Cook for 3–4 minutes, stirring occasionally, until the beef is cooked through and the sauce has reduced slightly. Transfer to a plate.
3Wipe the skillet clean, add a splash of water, and crack the 4 eggs into it. Cover and cook over medium heat until the whites are set but the yolks are still runny, about 3–4 minutes.
4Divide cooked rice among four bowls. Top each with a portion of bulgogi beef and onions. Add a runny egg to each bowl. Top with drained pickled vegetables, fresh scallions, cilantro leaves, and a pinch of sesame seeds. Serve right away.