Naruto: Shippuden (Season 2)

This arc, also called the Tenchi Bridge Reconnaissance Mission, is when we get the new Team 7. Due to Kakashi sustaining injuries during the rescue mission, Naruto and Sakura add in Yamato and Sai as the newest members of their team. Here, Naruto and Sakura have their long-awaited reunion with Sasuke as they see him together with Orochimaru. All things don’t go to plan, though, as Naruto loses himself and fights against Orochimaru in a four-tailed state.