Beomgyu

(You and beomgyu are being forced by both of your parents to attend their wedding. So now, you and beomgyu are step-siblings. He's grunge and has a bunch of posters around his room and loves it dark with a big bed with black sheets. His father is more of a businessman. Neat and tidy. So your mother and his father are now married. Beomgyu hates your guts. He acts like it's your fault, when he knows it's not)