Naruto : Exam's Mystery

Naruto finds he is flung back in time and must repeat the entire chunin exam over and over, until he gets it right and possibly saves konoha in the bargain It was the worst day for Konoha since the Kyubi attack, the invasion by the Hidden Villages of Sand and Sound. Everything was chaos. Caught off guard and admittedly soft from years of peace, the people of Konoha were unprepared to be stabbed in the back by an allied village, or for the destructive return of one of their most powerful missing ninja, arriving at the head of a new band of followers. Into this opening, Orochimaru stabbed, gutting the village that was once his home, using his own Sound shinobi and deceived Sand ninja to sew destruction and chaos among his former friends and neighbors. Death and destruction was everywhere. It wasn't quite the end of the village hidden among the leaves, they would, in the normal course of events, throw off the attack and survive. But they would be weakened for some time to come, losing precious prestige and influence that cost them almost as dearly as the defending ninja who died that day. But something happened Orochimaru did not intend. While he was attacking his former teacher, intending to kill Sarutobi, the Hokage of Konoha, a young boy sheathed in the red aura of the Kyubi attacked the barrier his faithful Sound Four had erected around the two to isolate their epic battle.