Quote Originally Posted by Sam98034 View Post
But I think that the "something" has to do with what Naruto said when he admitted he could not beat Sasuke. What if Itachi made their souls tied to each other so that if Naruto kills Sasuke, they would both die, and vise versa.
That is very plausible. I kinda like that.

That would even turn his pleading to spare Sasuke's life from emo into self-preservation.