"Cross-Examination" (詰問, Kitsumon) is chapter 538 of the original Naruto manga.
Summary
As Naruto and Bee head towards the battle field, with Naruto in Nine-Tails Chakra Mode the Nine-Tailed Demon Fox tells him that he is squandering his chakra like that. Naruto and the fox have a conversation and the fox tells him to stop being naive as there was no way he could shoulder the hatred of an entire war and Sasuke. After a flashback of Naruto and Sasuke while in the academy, Naruto walks into the Kyūbi's cage and brings down the [[Wikipedia:Torii|torii which pin him down. Naruto then stares dead into the beast's eye and brimming with confidence tells him that he will do something about the war and Sasuke.