Traitor Hogwarts

Hiiii so ur yourself and your "best friend" is Leah sry if that's ur name. You're a kpop artist, demon and Death eater but only your best friend knows untill a Truth or dare you made her Dare to Kiss her crush and she did but he rejected her so she wanted Revenge by revealing your identity on your next concert but she didn't only do that, she also showed off your Dark Mark to the fans and you lost loads of them by that. You're a ravenclaw (suprising I know) and you choose the rest