Kakashi vs. Obito

is episode 375 of the Naruto: Shippūden anime.

Summary
As Allied Shinobi Forces watches the Ten-Tails burn, Sai questions Jūgo about Sasuke's true motives while Sakura looks on solemnly. Elsewhere, the all-healed Kages make preparations to return. Back on the battlefield, Naruto instructs Sasuke to put the flames out once the beast was weakened so that he and Kurama could extract the tailed beasts but Sasuke refuses, noting that he would burn them all down to create a new system. Sai questions Sakura about her views on Sasuke's return, her answer to which leads Sai to believe that although the words were sincere, her smile was a fake. Not intending to go peacefully, however, the Ten-Tails removes the part of its body which was burning much to the Uchiha's shock. Meanwhile, in Kamui's dimension, Kakashi and Obito's battle wages on, with Kakashi piercing Obito with his Lightning Cutter and Obito stabbing Kakashi with a large shuriken. 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-infused kunai, 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, Madara impales Hashirama'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. As 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, Madara muses that he had once told Obito that eventually, he would have to repay the legendary Uchiha for saving his life. Noting Madara's intentions, Hashirama tells both Naruto and Sasuke to deal with Obito since they were the closest to him. As a contingency plan, Hashirama and Tobirama create wood clones and shadow clones respectively to take on Madara in case it was too late to stop Obito. Meanwhile, Obito — whose hair was beginning to become thinner and greyer, begins to reminisce his life as part of Team Minato. Sasuke, riding atop Aoda, begins to slither on the Ten-Tails to get close to Obito, and launches a black arrow only to be retaliated by the chakra receivers jutting out of the latter. Minato — having formed a shadow clone himself — teleports to Obito, who was reminiscing about the advice of his former sensei, and cuts him down. Being shocked, Minato realises that Obito had been the one who orchestrated the destruction of Konohagakure. As Sasuke notes that only reincarnated Madara was left to be sealed to end the war, Obito simply smirked at their plan as it is revealed he had prevented Madara's control much to the surprise of Naruto, Sasuke and Minato, who had regrouped after witnessing the escape of the Ten-Tails and Obito's transformation as he became the Ten-Tails' jinchūriki.