Rose was born a while after the death of Christ. He was created by an fallen angel then he killed my mother. The man took Rose to the only safe haven in the world for people like him. Then left with out a word. Rose didn't blame him he could get penalized for sleeping with a angel. So he grew up with others half bloods. Missing his sister she was still above the world spreading her truth. Untill she fell. now being the angel of lies she has no choice to be here on earth but she couldn't find Rose Because of the rune on his back. That keeps himself hidden from attackers but since she is no longer an angel she won't have a reason to attack. Enough of that. Rose came upon the other assasins trying to fit in. with the other.