Naruto Shippūden - Season 2 - Eps 44: The Secret of the Battle!
Yamato uses the first Hokage's chakra to suppress the demon fox's chakra and Naruto returns to normal, but with severe injuries. Sakura begins to heal him, but notes that medical ninjutsu has little effect on his wounds. Orochimaru's sword is revealed to have only pierced one of Sai's clones. The real Sai emerges, talks to Orochimaru and gives him a letter from Danzo. Sai then leaves with Orochimaru and Kabuto but Yamato's wood clone stays close on their trail. Naruto comes to his senses and wonders what happened but Sakura decides not to tell him the truth. They reach the meeting spot, picking up the picture book Sai left behind. Yamato infers that Danzo seeks to destroy and remake Konoha by collaborating with Orochimaru.
About Naruto Shippūden

Title: Naruto Shippūden
First Air Date: 2007-02-15
Last Air Date: 2017-03-23
Status: Ended
Rating: 8.538/10 (from 8290 votes)
Language: JA
Seasons: 21
Total Episodes: 500
Network: TV Tokyo
Genres: Animation, Action & Adventure, Sci-Fi & Fantasy
Production Companies: TV Tokyo, Pierrot, Sound Box, Rakuonsha, Aniplex
Synopsis
After 2 and a half years Naruto finally returns to his village of Konoha, and sets about putting his ambitions to work. It will not be easy though as he has amassed a few more dangerous enemies, in the likes of the shinobi organization; Akatsuki.
Cast

Junko Takeuchi
Naruto Uzumaki (voice)

Noriaki Sugiyama
Sasuke Uchiha (voice)

Chie Nakamura
Sakura Haruno (voice)

Kazuhiko Inoue
Kakashi Hatake (voice)

Showtaro Morikubo
Shikamaru Nara (voice)

Satoshi Hino
Sai (voice)

Akira Ishida
Gaara (voice)

Hideo Ishikawa
Itachi Uchiha (voice)

Koichi Tochika
Neji Hyuga (voice)

Keiko Nemoto
Shizune (voice)