During the battle with Kaguya, Sasuke is fatally stabbed by Kaguya's deadly rods, before he dies, Sasuke gives Naruto the yin seal, and granting Naruto the rinnegan as well. With his new powers, Naruto successfully defeats and seals away Kaguya, but simultaneously gets caught in her teleportation jutsu and gets sent to the Kingdom of Fiore.
Possible eventual Erza x Naruto
And a little bit of Naruto x Lucy, but the main pair WILL be Naruto and Erza-you know what fuck it, it's a very slight harem, but the main pair WILL be NaruErza
Very strong Naruto
Authors Note: I am going to give Naruto some more jutsu, so that way he will have a variety, so he won't just be using the rasengan and shadow clone jutsu over and over again.
Oh and I always forget to do this...... Disclaimer: I DO NOT OWN NARUTO OR FAIRY TAIL