The Lost Princess and The Bored Killer

OC/Sakura. Sakura is being tracked down by a killer who's after the royal family because of something that happened a long time ago. Sakura doesn't remember being royalty, but the killer will remind her. He wants Sakura to know why he's going to kill her before he actually does it. Will he though when he knows the real Sakura or will he continue to hate her because of this.