Crackfic, AU. The Third Hokage granted Uchiha Itachi's request to spare the Uchiha children, only to realize too late that they were all horrible devil children. Literally. Which may be why Naruto fits right in with the rest of the little monsters Sasuke's too busy raising to brood.

Naruto gets his hands on the key to his seal too early, and the yang and yin chakra of Kyuubi are freed. As in, now there are three Narutos.