The Next Challenge! Naruto vs. The Nine Tails (E245)

With Killer Bee as his new master, Naruto begins his training to control the power of a Tailed Beast. In order to do so, one must fight the Tailed Beast head on and absorb its chakra, converting it into one’s own power. Using the key entrusted to him by Jiraiya, Naruto unlocks the seal to release Nine Tails, and the battle between the two begins. (iTunes)