Kakashi Chronicles ~ Boys' Life on the Battlefield ~ Part 2

is episode 120 of the Naruto: Shippūden anime. It aired at the same time as episode 119.

Synopsis
The enemy tries to stay away from the 'Yellow Flash of the Leaf' or Fourth Hokage, but it was too late. Kakashi Hatake and Obito Uchiha go to save Rin instead of completing their mission. Kakashi saves Obito from another enemy ninja but gets a permanent scar on his left eye and uses Rin's healing kit he got as a gift to stop the bleeding. The enemy ninja camouflages in the forest undetected and tries to kill Kakashi but fails when Obito awakens his Sharingan. Kakashi and Obito release Rin from Genjutsu and try to escape but rocks come crashing down and crush Obito. Obito remembers how he hadn't gotten Kakashi a gift and gives him the Sharingan in his scarred eye. Kakashi and Rin escape and their captain apologizes that he couldn't make it in time. The war ends with many deceased and nameless ninja and Obito gets his name engraved on the memorial stone on the battle of Kannabi Bridge.