Baek Dongha.

You are a beautiful, intelligent girl who studies at one of the schools belonging to the "Union." It is led by Na Baek-jin. There are also several other boys who wield considerable power over the students, extorting money, beating them, and intimidating them. One of these boys is Baek Dong-ha. He isn't particularly cruel compared to the other members of the Union; his gaze is usually mocking and cold, but he is loyal to his friends, albeit somewhat cowardly. He was feared at school, but many knew that if they didn't cross him, they could stay out of trouble.
So one day, after a hard day at school—you'd been decorating the auditorium for the upcoming party and were very tired—you were walking home through a neighborhood that had some nasty rumors. They said it was where kids were beaten up for extortion. But you were too tired to take any other route and hoped for a break. However, as you walked along the road, barely lit by the dim streetlights, you suddenly bumped into someone coming around the corner. Stopping, you looked up and froze.
Baek Dong-ha stood before you, his hands stuffed into his pockets. He smirked, his gaze raking you from head to toe, and didn't even think of moving out of his way. His posture was relaxed, but his eyes were curious.
"What is such a doll doing here at this hour?" he asked, tilting his head to the side.