The episode picks up with Kakashi and Obito Uchiha at odds over how to handle the kidnapping of their teammate, Rin Nohara. While Kakashi initially insists on prioritizing the mission, Obito's words— "Those who break the rules are scum, but those who abandon their friends are worse than scum" —eventually change Kakashi's mind.
, titled "Kakashi Gaiden ~ Boys' Life on the Battlefield ~ Part 2," concludes the origin story of Kakashi Hatake and explains how he obtained his signature Sharingan. Episode Summary Naruto Shippuuden (Dub) Episode 120
It clarifies why a non-Uchiha like Kakashi possesses the Doujutsu. The episode picks up with Kakashi and Obito
Knowing he is dying, Obito offers his remaining left Sharingan to Kakashi as a gift for becoming a Jōnin. Rin, a medical ninja, performs the transplant immediately. Episode Summary It clarifies why a non-Uchiha like
With his new eye, Kakashi uses the perfected Chidori to defeat the remaining enemies. Minato Namikaze (the Future Fourth Hokage) eventually arrives to finish the battle, but Obito is presumed dead, leaving Kakashi with a lifelong burden of grief and a new philosophy on teamwork. Key Highlights
This episode marks the definitive shift in Kakashi's personality from a cold, rule-abiding soldier to the comrade-focused mentor we see in the main series.