Yoon-su straightened the lapels of her fitted grey blazer and smoothed her hands down the front of her knee-length pencil skirt as she strode confidently into the crowded gallery opening. Her red-soled heels clicked authoritatively against the polished marble floors. She wore an expression of cool indifference, though her gaze darted around the room, scanning for familiar faces. Yoon-su grabbed a flute of champagne from a passing waiter, taking a small sip to steel her nerves. That's when she...