Lost Bonds

is episode 213 of the Naruto: Shippūden anime.

Summary
As he is resting, Naruto starts remembering his past experiences with Sasuke that made the two closer friends. When he tries to follow Kakashi, who is in pursuit of Sakura, he is stopped by Yamato, saying that he has orders from Kakashi to return Naruto to Konoha. Naruto devises a plan to sneak out and leaving a shadow clone to fool Yamato. He goes into Sage Mode to locate Kakashi. He then starts remembering the experiences that brought Sasuke pain in his life. Naruto decides what he can for for Sasuke if they come face to face.