"The Fourth Tail…!!" (四本目…!!, Yonhonme…!!) is chapter 294 of the original Naruto manga.
Sakura asks Yamato about what is happening to Naruto, but he only assures her that he has things handled. Kabuto also approaches them and asks if their presence means Sasori is dead. He is glad when they confirm. Meanwhile, Orochimaru attacks Naruto but Naruto, in a four-tailed transformation, has no difficulty countering the attack and then some. The observing Sai and Yamato's wood clone realise that there is nothing they can do but watch. Orochimaru tries to flee but Naruto has no difficulties pursuing him. With Orochimaru cornered, Naruto prepares an attack.