Kakashi Hatake, the Hokage

is episode 219 of the Naruto: Shippūden anime.

Synopsis
As the Stone Carver begins to carve Danzō's head in the Hokage Monument, he's told that Danzō is dead. Meanwhile, Kakashi takes Karin to the Intelligence Division to be questioned. Naruto gathers the Konoha 11 and tells them his decision to fight Sasuke alone, much to their frustration. After talking with the village's elders, Kakashi wonders around Konoha, thinking about his future as an Hokage when Might Guy appears and challenges him to race. Kakashi ultimately wins the race and Guy congratulates him on becoming Hokage, claiming that from now on Kakashi will be too busy for their matches. However, Kakashi tells him that they will always be "eternal rivals" and that he is happy he is there, leaving Guy in tears. Later, as the Fire Daimyō is about to appoint Kakashi as the new Hokage, Guy interrupts him and informs them that Tsunade has awoken from her coma. As the Stone Carver begins to carve Kakashi's head, he is once again stopped and informed that Tsunade will remain the Hokage, much to his dismay.