S03E132: For a Friend

Kakashi learns the truth about the chase after Sasuke, and orders his dogs, including Pakkun, to go find Naruto and Sasuke. However, things are looking grim as the clash between the Chidori and the Rasengan ensues. The attacks are even, causing Naruto and Sasuke to both fly back. Naruto finally realizes how serious Sasuke is, and gets the snot beat out of him while he remembers how he always wanted to be friends with Sasuke.