Naruto: The Next God of Shinobi

At five years old, Naruto unleashes the Kyuubi's chakra and slaughters the mob that attempted to kill him. Having little choice, Hiruzen Sarutobi, the Sandaime Hokage, takes in Naruto and trains him. Will the Yondaime legacy become the next 'God? Sequel is Naruto: Next God of Shinobi - Book II