Naruto Shippuden - Season 21, Episode 02: Itachi`s Story: Light and Darkness - The Genius
In the 21st season, there will be other repercussions when Zomaki, Naruto and Haruno Sakura continue to look for Uchiha Sasuke. It was that unsuccessful attempt to restore Sasuke, where Naruto discovered that circumstances gave him only three years to prepare or train for a confrontation with Orochimaru.