Invincible

I was sent to kill her... not fake a marriage and actually fall for her.I survived by following one rule - never fight on the anniversary of my brother's death. When that rule is broken, all hell breaks loose for everyone around me. After taking a step away from fighting, I was given the orders to help take out an enemy. No big deal, right? I didn't think so... until I saw a picture of who it was. A woman named Rose.The second I see her, I know I won't kill her. The only way to keep her alive is