Description
Sasuke woke up in a large room. Tobi appeared from the shadows, and said that he would tell Sasuke "the truth" about Itachi. He then began to take off his mask. As Tobi's, whose true identity is none other than Madara, Sharingan was shown, Sasuke's Sharingan was turned into Mangekyō Sharingan. His eyes bled, and Amaterasu appeared around Tobi. Tobi said that Itachi had implanted his abilities into Sasuke, and that they would activate as soon as Tobi's Sharingan was shown. Tobi then said that Itachi had done this to kill Tobi, and to protect Sasuke. Sasuke didn't believe him, and yelled at Tobi to go away. Tobi then began to tell Sasuke the secret, about how Itachi had tried to protect the village as well as Sasuke, but for things to make sense, he would have to go back before the founding of Konoha.
At the time, there were many clans that existed, and the Uchiha clan was one of the strongest, only to be rivalled with the Senju clan whom they constantly battled. Madara was noticed as the leader of the Uchiha clan because of his powerful chakra, but as Itachi said before, Madara plucked out his brother, Izuna's eyes so he can gain an Eternal Mangekyō Sharingan. In order to end their fighting, Hashirama Senju , the leader of the Senju clan , decided to make a peace offering with the Uchiha, which had formed the village of Konoha. Madara became infuriated when Hashirama became the First Hokage because he feared that the Uchiha clan would be put down, but the Uchiha did not believe their leader's warning, so Madara decided to abandon his own clan and defect from Konoha. Madara used the power of his Eternal Mangekyō Sharingan to take control of the Nine-tails to take his revenge and battled Hashirama which tore up the landscape and this land would eventually be called the Valley of the End, the same place where Sasuke battled Naruto before he left Konoha. At the end of the battle, Madara lost control of the Nine-tails and everyone, even the Uchiha and Hashirama believed Madara had died. Afterwards, little by little, the Uchiha clan began losing their power as the village recognised the Senju clan more, and everything Madara had warned his clan about was beginning to come true, when the final straw occurred. 16 years ago, the Nine-Tails attacked Konoha, and due to the Uchiha's reputation back when Madara controlled the Nine-Tails against his fight against Hashirama, the leaders of Konoha believed the Uchiha were responsible. In punishment, the Uchiha were forced to live in one area.
Itachi was ordered by the elders of Konoha to annihilate the Uchiha because they were planning a coup d'état against Konoha, and Itachi had done this because he detested war, and wanted to maintain Konoha's stability. When Itachi was not even four years old, he had seen the bloodshed of the Third Shinobi World War which caused him to develop a pacifist nature. Coincidently, Tobi was attempting to destroy Konoha when he encountered Itachi, so Itachi made a deal; If he were to help Itachi wipe out their clan, "Madara" must leave Konoha alone, which Madara accepted. Sasuke began to believe Tobi was the real bad guy because Itachi said that Madara was controlling the Nine-Tails' every move, but "Madara "denies his involvement and Itachi only said that because he did not want Sasuke to trust Madara. This triggered a flashback to moments before Itachi's death; revealing that he was not seeking his brother's eyes, but, in his final stance with Sasuke, had poked him on the forehead (as he did in Sasuke's childhood) and smiled at him. After this, Sasuke joined up with Hebi once more and they allied with the akatsuki. Now with his new Mangekyō Sharingan, He told the group that they would be called Taka from now on, and that their goal was "the complete and utter destruction of Konoha".