Naruto

A long time ago, a demon fox with nine tails appeared. When a tail was swung, it would destroy a mountain and cause a tsunami. To counter it, the people gathered ninjas. One ninja sealed the monster in a life or death battle and died. That ninja was known as the Fourth Hokage... and with his death, he sealed the powers of the Nina-Tailed Demon Fox into the body of a young boy...

This young boy's name is Naruto. Naruto hopes one day he can become Hokage. Most people in the village dislike him and consider him a pest. Naruto causes havoc in order to get attention, since he is ignored due to the fact that people think he is the demon fox itself. After failing the Genin exam, Naruto is tricked into stealing a scroll to become Genin. He ends up in severe danger but Iruka, his teacher, comes to saves him. It ends up that Naruto saves Iruka from possible death and for that, he is upgraded to an official ninja where he begins his journey to become Hokage!