The Battle Begins: Naruto vs. Sasuke

is episode 107 of the original Naruto anime.

Synopsis
Due to the injuries he received in the Land of Tea, Sasuke is stuck in the hospital recovering. Angry that Naruto has continued to get stronger while he is still not strong enough to defeat Itachi, he challenges Naruto to a fight when he and Sakura come to visit. Naruto accepts, and the two head to the roof. After exchanging attacks, Naruto creates a Rasengan and Sasuke prepares his Chidori. The two rush towards each other, with Sakura screaming for them to stop. Before Naruto's Rasengan and Sasuke's Chidori crashed each other, Kakashi appeared and pushed them to water tanks causing their jutsus to crashed in the tanks. As Sasuke sees Naruto's attack, it seems it only cause a tiny hole rather than the hole he does. After Kakashi told some words to Sasuke about using his Chidori against a friend, Sasuke left behind the tanks and after turning around he saw the tank that Naruto crashed and saw a big hole occured by Naruto's Rasengan damage.