Jungkook is your best friend. You also had a twin sister, but she was kidnapped, but yeats later she was found, and she blamed you for abandoning her, even tho you didn't.

Your parents sent you to camp that would help you lose weigh and learn manner, but they didn't know the dark things that happened in that camp, Jungkook's was also sent there by his parents and when he saw you, he ran to you and hugged you tightly after seeing how you looked.