The Uchiha Clan Massacre, also called the Uchiha Incident (うちはの事件, Uchiha no Jiken) and the Uchiha Family Downfall (うちは一族滅亡, Uchiha Ichizoku Metsubō), took place four years before the start of the series in Konohagakure, bringing forth the demise of the Uchiha clan.
During his administration, in an act of segregation made to look noble, Tobirama Senju gave the Uchiha Clan the Konoha Military Police Force and had them live in a corner of Konoha. Though some of the Uchiha came to think they are becoming second class citizens generations later, Tobirama's actions were mean to subjugate the Curse of Hatred so none of them would descend into madness like Madara Uchiha. However, believed to have died at the time, Obito Uchiha fell victim to his clan's curse and orchestrated the Nine-Tails' attack on Konoha.
As a result, all witnesses to the masked man's actions dead and that the Sharingan is one of the few things to be able to control Kurama, Konoha's leadership began to suspect one among the Uchiha Clan to be behind the attack and placed them under close surveillance from that point onwards. In turn, the unjust accusation and discrimination that would ensue resulted with many within the Uchiha Clan to bare a malice towards the Senju-influenced government. In planning the coup d'état, they entrusted Itachi Uchiha who was an ANBU, to be their spy. However, a pacifist by nature, Itachi knew that a civil war would result into another Shinobi World War and instead provided Konoha with information on the Uchiha's plans.
Though the Third Hokage Hiruzen Sarutobi, who did not agree with the treatment being dealt to the Uchiha, attempted to achieve a peacefully resolution with the clan, Danzō Shimura — who was not one to wait around for peaceful negotiations — convinced Itachi that slaughtering his entire clan was the only way to avert war, promising that his younger brother Sasuke Uchiha would be spared.
The Uchiha clan, however, was not completely ignorant of Itachi's double-agent status and began to suspect him due to his strange behaviour since joining the ANBU, and asked his close friend Shisui Uchiha to keep an eye on him. However, Shisui was also against the coup d'etat like Itachi, and attempted to stop his kin with his Mangekyō Sharingan's strongest technique, but Danzō Shimura stole his right eye, bent on protecting the village in his own way. Fearing that Danzō would get his remaining eye, Shisui entrusts it to Itachi. Soon after, covering up the nature of Shisui's death as a suicide, Itachi is accused of murder and loses the trust of several of its members. Regardless, Itachi allowed them to believe that as he becomes more distant from his kin. Even Fugaku, the clan's leader, and Itachi's father who defended his son of being accused, seemingly washed his hands of Itachi, unable to understand his son any more.
Prior to the massacre, Itachi met with Obito as he had infiltrated the village. Believing him to be Madara out for revenge on Konoha, Itachi allows Obito to aid in the slaughter in return to leave the rest of Konoha and Sasuke be. It was also during this time that Obito met with Danzō; the circumstances and content of this meeting are unknown.
On the night of the slaughter, with Obito's help, Itachi proceeds to murder every member of the Uchiha clan until only his parents remaining. Hesitating before killing them, Itachi learns his parents loved and respected him despite his choice to side with the village over his clan as they ask him to take care of Sasuke.
When Sasuke returned that night late from his own training, finding his kin's corpses littering the streets, he finds Itachi standing over their parents' bodies and demands to know what he has done. Intending to have Sasuke kill him as payment for his crime, Itachi used Tsukuyomi on Sasuke to make him think that he alone murdered their clan in cold blood. Claiming to have spared him as he was not worth killing, Itachi convinces Sasuke to live a life of vengeance. Sasuke activated his Sharingan for the first time and chased after Itachi, managing to knock off his forehead protector. Itachi wept as he picked it up, before Sasuke falling unconscious and taking his leave. Sasuke was greatly traumatised by the experience and did not remember awakening his Sharingan.
Before leaving Konoha, Itachi asked Hiruzen to protect Sasuke from Danzō and the other two elders Koharu and Homura, and to never disclose the truth of the events surrounding the massacre. He also made it a point to threaten Danzō as well with the threat of leaking information on Konoha to enemy villages, should he ever lay a hand on Sasuke. Soon after leaving, Itachi joined the Akatsuki to keep Konoha safe from the organisation until the day that Sasuke would come looking for him. Aside from Itachi and Konoha's elders knowing the truth, the official story the latter made up was that Itachi turned rogue due to losing faith in the clan.
The attack had a immense psychological effect on Sasuke, who woke up in the hospital with no memories after Itachi's speech and unable to utilise the Sharingan until five years later after becoming a member of Team 7. However, despite feeling that there was more to the event then he knew, it motivated Sasuke to strive to gather enough power to kill Itachi, ultimately leading him to Orochimaru whose guidance enables Sasuke to obtain the means. However, after Itachi's death, Sasuke learns the truth of the massacre from Obito while in his Tobi guise. Crushed by this revelation, despite that the Uchiha clan's actions would have destroyed the village, themselves and many others beyond village borders, Sasuke resolved to destroy Konoha to avenge the tragic lives both he and Itachi led, and to purify the clan's name by severing his ties with the village and the "corrupted shinobi world" that shunned it. The drive is furthered when Danzō admits his role in the massacre yet claimed to have no reason to hide it any longer if Sasuke found out the truth.
Obito later revealed the truth of the Uchiha Massacre to Naruto Uzumaki, Kakashi Hatake, and Yamato. However, with no evidence behind Obito's words, Kakashi suggested to Naruto and Yamato to keep the information to themselves so as not to hinder Konoha while being rebuilt after Pain's invasion of the village. A reincarnated Itachi, upon learning that Naruto had also come to know the truth, asked him not to reveal the truth so that the Uchiha clan name can maintain its honour. Kabuto Yakushi, being a well informed spy, reveals that he too knew the truth.
- ↑ Naruto chapter 474, page 12
- ↑ 2.0 2.1 Naruto chapter 399, page 16
- ↑ Naruto chapter 399, pages 16-17
- ↑ Naruto chapter 400, pages 1-8
- ↑ Naruto chapter 400, page 9
- ↑ Naruto chapter 590, pages 8-10
- ↑ Naruto chapter 590, pages 5-6
- ↑ Naruto chapter 222, pages 2-10
- ↑ Naruto chapter 550, page 11
- ↑ Naruto chapter 222, pages 18-19
- ↑ Naruto chapter 223, pages 5-15
- ↑ Naruto chapter 400, pages 8-9
- ↑ Naruto chapter 474, page 12
- ↑ Naruto chapter 590, page 13
- ↑ Naruto chapter 403, pages 10-14
- ↑ Naruto chapter 400, pages 13-15
- ↑ Naruto chapter 401, page 6
- ↑ Naruto chapters 399-401
- ↑ Naruto chapter 401, page 17
- ↑ Naruto chapter 485, page 6
- ↑ Naruto chapter 476, pages 16-21
- ↑ Naruto chapter 470, page 4
- ↑ Naruto chapter 549, page 10
- ↑ Naruto chapter 581, page 2