Kakashi's Decision!! (カカシの決意!!, Kakashi no Ketsui!!) is chapter 608 of the Naruto manga.
Obito Uchiha and Kakashi Hatake continue their battle, with the former unleashing a barrage of shuriken only to be stopped by Kakashi's wall of earth. As Obito slips through the wall, Kakashi continues to ask him why and to ask him if it is related to Rin, to which Obito tells him to shut up. Obito then warps Kakashi to the other dimension, but his victory is short lived, as Kakashi returns using Kamui. In the meantime, Madara's Wood Dragon begins absorbing Kurama's chakra, causing Naruto's Tailed Beast Mode to falter. Obito begins to overwhelm Kakashi, bringing him to his knees. Madara uses Wood Release to bind Killer B and Might Guy, then begins to activate his Susanoo to finish things up on the battlefield. Resolved, Naruto notes that the Uchiha's ideals annoyed him to no end and, creating a shadow clone, he is able to stop both Obito's shuriken and Madara's Susanoo Sword from making killing blows on Kakashi and Guy respectively. Hearing Naruto's words that he would protect his friends, Kakashi and Guy both spring into action with the former using Lightning Cutter to destroy Obito's other shuriken and Guy using Daytime Tiger to attack Madara. Turning to his former comrade, Kakashi tells Obito that what he still remembered what he had taught him in the past and what he could do now, was protect Naruto.
In this chapter, Gyūki is depicted with his left long horn in one page.