The Secret of the Impure World Reincarnation (episode)

is episode 264 of the Naruto: Shippūden anime.

Summary
Naruto continues his tailed beast training with B. As he attempts to transform into the Nine-Tails he fails, assuming a chibi-version of the beast. With this the Eight-Tails explains the mechanism behind transforming into a tailed beast and the cooperation required from both parties to do so. B tells Naruto that this might pose a problem as he wouldn't be able to use the Tailed Beast Ball. Moving on with the training nonetheless, B decides to build on the techniques Naruto could perform. Showing them his Rasengan in his Nine-Tails Chakra Mode, B is shocked to see that Naruto's technique was an application of the Tailed Beast Ball. Telling Naruto this, B enquires who taught him that technique and upon hearing that it was created by the Fourth Hokage: Minato Namikaze, B wonders whether this was fate. Meanwhile at the Allied Shinobi Forces' Headquarters, Ao notes that the intel sent to them by Muta allowed them to locate the enemy forces travelling underground. After Inoichi has his division inform the Second Division of the orders from Headquarters. Kiba, Akamaru, Hana and one of the Three Haimaru Brothers from the Fifth Division are sent to support the Second Division. Kitsuchi alongside Kurotsuchi then uncover the enemy forces while the rest of the division lie in wait to attack.