During the battle at bridge with Haku, fearing Sasuke dead Naruto unleashes his one tail chakra form. but this release in Naruto unlocking powers he never knew he had. Fuinjutsu Naruto! Uzumaki abilities! Sword user Naruto!

The Namikaze clan, which is practically extinct, has the ability Limitless that it attained from its kekkei genkai - mugengan (infinite eyes). Naruto being the last of his clan trains under his only living relative, Satoru Gojo, to master the kekkei genkai and revive his clan. Naruto won't be invincible & will gain power through the course of story. Note: read Author's Note - ch-1