Crystal is a girl at school that is 16 years old and is a sophmore. She has 4 brother that are all leaders of gangs. She has a abusive mother named Hayun. Kai and Kris is oldests and leaders of the gang EXO. Rap Monster is the leader of the gang BTS and G-Dragon is the leader of the gang Big Bang. If anyone hurt Crystal, her brothers will kill the person that hurt Crystal. One day Crystal met a boy name Jihun. She met him at a bar that her brothers wanted her to go with them. Crystal always gets bullied by the popular girls but she only have 4 friends, CL, Park Bom, Sandara, Minzy. They love to hang out but when they are out too later, Hayun, Crystal abusive mom will yell at her.