How was Kakashi Hatake able to survive and become the next Hokage after losing his Sharingan? I hardly read the manga. I watch the anime series, Naruto: Shippuden. In episode 424, Kakashi's Sharingan (previously Obito's Sharingan) is stolen by Madara. Then in episode 425, Naruto uses his new power and give Kakashi's old eye (as far I know and from my view, it is a normal eye).

Kakashi is the Copy Ninja. So how could Kakashi survive in the ninja world and become the next Hokage (I watched The Last: Naruto the Movie) with normal eyes? I'm curious because Kakashi's nickname was given because he used his Sharingan for copying others' jutsu. That was his technique. As I can remember in Naruto series, someone described Kakashi and told that the only jutsu he mastered by himself was the Chidori.
Very soon in anime,


  Obito will say that his gift for Kakashi was not full and will give him both Sharingans. He will manage to use Susanoo and save Naruto, Sasuke and Sakura from Kaguya's attack. I don't know why, but after war he has normal eyes, maybe he can deactivate Sharingan.


UPD.

I've read that chapter again and understood why he has normal eyes. 


  Obito says that his present may expire but it's not completely useless.