Naruto: Lost Innocence—Arc 1: Bridge of the Hidden Mist

The nine-tails fox always tried to tempt Naruto with dangerous power. It's only worsened after promotion to tokubetsu jonin he must work for Gato, the world's biggest crimelord. Their mission is to kill Tazuna the bridge maker, guarded by Zabuza, to secure Gato's systematic addiction and monopoly over the Land of Water. Despite Kakashi's urging, Naruto to decide morality on his own