the 4th hokage is not naruto's father. there is absolutly NO imformation supporting this idea at all. if the 4th was his father why does everyone treat him as an outcast? it doesnt make sense. the hero of the village sacrifices himself and and his son to stop the demon and in return the villagers treat his the son of their revered hero...like shit. very probable. also in response to danik kyuubi's power cannot be used at will. this is demonstrated when naruto is thrown of the cliff by jiraiya and has to ask kyuubi for power. this also shows that while kyuubi is sealed inside of naruto he has plenty of control of his own chakra. also just because itachi and akatsuki are looking for naruto to try and use the demons power doesnt mean its posible for them to do so. im sure one of the strongest youma is gonna let a bunch of filthy humans play around with his chakra like a tinkertoy...