I don't think the fight is over yet. Kaguya is probably going to possess one of the three, and I think it's either going to be Sasuke (Naruto's supposed best friend) or Sakura (the one he loves) which will make it impossible for him to kill her. If it's Sakura, then I can see Naruto fight Sasuke to keep him from attacking her. If it's Sasuke, I can see Naruto fighting him to incapacitate him.
Whatever is going to happen, the Hokage are going to be involved in some capacity, I think.
There's some cool edits going around like this one. I'll post a few more later.