the person who dies is sasuke - No one dies because sasuke's chidori and naruto's rasengan are at the same level they were just tired
no one
What final fight, the manga and anime hasn't ended yet.
When Sasuke leaves the village in search of power.In episode 129and128 MANGA SPOILERS Shortly after Sasuke kills Danzo he and Naruto get into a short clash.
Yes, eventually.