Deadlock! Sannin Showdown!

is episode 96 of the original Naruto anime.

Synopsis
Katsuyu and Gamabunta double-teamed Manda, although the latter was able to hold his own. Using her inhuman strength, Tsunade was able to pin Manda down, and delivered a finishing blow to Orochimaru. Deciding to use his last resort in order to regain the use of his arms, Orochimaru retreated with Kabuto, leaving Tsunade, Jiraiya, Shizune, and Naruto to their own devices. Once Naruto recovered, and learned of Tsunade's acceptance of the Hokage title, he remarked that she was undeserving of the job, due to the fact that the Third Hokage had been better in every possible way. The two stepped outside to have another fight, although this time Tsunade gave Naruto a kiss on the forehead instead of a blow to the face. After lunch, the group set off for Konoha.