Japanese title: Kyūbi kaihō!! (九尾解放!!)
Faced with Orochimaru, his sworn enemy, Naruto suddenly releases the power of his Nine-Tailed Fox. When Yamato sees Naruto's fourth tail appear, he recalls Jiraiya's tale of how he nearly lost his life to the transformed Naruto. Yamato has been ordered to suppress the Nine-Tail chakra that would adversely affect Naruto's body. Then, the secret of Yamato's Wood-Style ninjutsu becomes apparent.