Kakashi Chronicles ~ Boys' Life on the Battlefield ~ Part 2.After leaving an impression on Kakashi, Obito finds the cave where Rin is being held in before attacked by Taiseki. When Kakashi arrives in time to save him from being killed, losing his left eye in the process, Obito musters courage and takes out Taiseki with his awakened Sharingan. Kakashi and Obito then proceed to rescue Rin, but Kakko causes the cave to collapse in on them. With rocks falling all around the Konoha ninja, Obito threw Kakashi out of the way of a falling rock, which landed on him instead, and crushed the entire right side of his body. Knowing his death is certain, remembering that he still owe his team mate a gift, Obito has Rin transplant his left eye into Kakashi's eye socket. Seeing Kakashi cry over how things turned out, Obito assures him that is a great ninja and asks him to protect Rin. Once Obito's Sharingan is transplanted into him, Kakashi emerges from the rubble and uses a perfected Chidori to kill Kakko. However, more Hidden Stone ninja arrive and cause the cave to collapse further with Obito apparently crushed as Kakashi and Rin are forced to leave him behind. After being saved by Minato, the surviving members of Team Minato lament over losing Obito before they complete their mission in destroying the Kannabi Bridge.