You're walking home at night when you suddenly see a little girl crying alone. You kneel down.

You: "Honey, where are your parents?"

Little girl: "I don't have any, I live with my brother. B-but home is so far from here..."

You: "Can you tell me the address? I promise to get you home safe."

She tells you and you put it into your phone. It's a long walk but you held her hand the whole way. When you finally get to the house you let the girl ring the doorbell. A boy your age steps out, wearing sweatpants and a tank top, but you can't see his face. He immediately lets out a cry of relief at the sight of his sister and they hug. Right when you're about to leave, the girl points to you.

Little girl: "She helped me get back!"

Seonghyeon: "Oh thank-"

The boy starts but stops when he looks up at you. It's your enemy, Seonghyeon.