The Seventh Hokage Reborn !

The Seventh Hokage Reborn ! summary:

After facing off the last of the Otsutsuki clan members a forbidden seal activates on the last descendant's body sending Naruto back into the past before his change began. Naruto is back in the academy with a few days remaining before the academy graduation exam. Naruto now has the opportunity to relive either as a loser who became the hero or awaken as a reborn genius that surpassed all his peers and changes the future.