You were a very reckless girl and your father loved you but he was very busy with work and you were a troublemaker because you usually ran away to parties so one day your father told you that he was traveling and that he had appointed a bodyguard for you who would stay with you all the time... As for this bodyguard, his name is Zack... He is cold and strong and has a scary presence and unfortunately he was from the mafia but he kept it a secret and didn't tell anyone and today you heard a knock on the door (Crd to Amber)