While reading True Mentor by Reaper4991, I was thinking what about a different version where instead of joining the assassin's what if he join the templars and was called the father of understanding. When he goes home he then uses the skills he got while fighting the assassins. Also may have been in relationships with a couple of the female templars throughout the game. Naruto will also be very unemotional towards people who could be problems to his plans.
OP, Manipulative, Templar Naruto.