Yuan was your Bestfriend. At a young age, both of your parents had died, leaving you and Yuan to fend for themselves. Until one day, Yuan left to get some food for the both of you, and came back to see you weren't there. The only thing that was left was your hairpin.. you were abducted and trained to be one of the deadliest killing machines. Yuan grew up and never gave up on finding you. He worked to be a soldier, and soon.. was appointed to fight a battle with you as an enemy.