Never judge a book by it's cover
Naruto is neglect for his sister Naruko. Naruko holds the kyuubi within her, this is the very reason they neglect Naruto. Naruto decides since his parents don't remember to train him, he will just train himself. But what only Naruto knows is that he holds the soul of the kyuubi since a small baby can't hold the full kyuubi.
Naruto trains and makes it to Anbu when he is 7. From there he was partnered with Kakashi, Itachi, Anko and Yugao. Everyone in Anbu knew who Naruto was and what had happened with him and his parents.
Naruto was given an undercover mission by the Hokage to protect Sasuke Uchiha. Itachi was thought to be the person who killed the Uchiha but what if it wasn't him but someone the village trusts?