"The Current Obito" (今のオビトを, Ima no Obito o) is chapter 636 of the original Naruto manga.
Asking Obito if he'd had enough of their genjutsu battle, Kakashi and Obito form the seal of confrontation as they begin their real battle. They start to think back to their childhood days as young ninja, when they fought under the instructions of their sensei. Kakashi remembers the "old Obito", who was just like Naruto, and resolves that to protect Naruto and the old Obito, he will have to defeat the current one. As both men deliver final blows, Kakashi impales Obito through his chest with a lightning-infusedkunai, while Obito stabs Kakashi with one of his black rods. Obito, unwilling to give up, states that defeating him will not gain any advantage to winning the war despite having won their battle and warps back to the battlefield. Meanwhile, MadaraimpalesHashirama's wood clone, and notes that Hashirama was putting too much energy into restraining the Ten-Tails. Though the clone attempts to dispute Madara's words, it is split in half before it can complete its statement. As Obito arrives atop the Ten-Tails' head, Madara decides that Obito had served his purpose to him, and though he wanted to fight Hashirama before he became a jinchūriki, the situation could not be helped. Forming a seal which affects Obito whose right side begins to spike out black rods and turn black, Madara declares that it was time to revive him with the Outer Path: Samsara of Heavenly Life Technique. As this occurs, Obito remembers Rin once again before forming a seal of his own and letting out a cry which draws the attention of many on the battlefield.
In this chapter, Minato is depicted with white sclerae instead of dark ones. However, this was corrected in the tankōbon version.