Takumi Uchiha

Overview
Takumi Uchiha was the legendary leader of the Uchiha clan during the Miocene Period.

He founded Noharagakure alongside his childhood friends and rivals, Tokito Nara, and Yorichi Uzumaki with the intention of beginning an era of peace. When the three couldn't agree on how to achieve that peace, they fought for control of the village, a conflict which ended in Takumi's death. Takumi, however, rewrote his death and went into hiding to work on his own plans. Unable to complete it in his natural life, he entrusted his knowledge and plans to Maki Uchiha shortly before his actual death.

Background
Takumi was born during the Warring States Period (Miocene), and was the eldest of Izuna Uchiha's five children. Takumi and his siblings grew up on the battlefield waging constant war with the Uchiha's rivals: the Nara. Three of his brothers died young, leaving Takumi with only his younger sister, Madison. Takumi and Madison became very close through their shared loss and constantly competed with each other to get stronger. This, combined with his naturally strong chakra, enabled the young Takumi to defeat adult Nara in battle and develop a reputation as a genius.

During his infrequent downtime, Takumi met boys his own age named Tokito, and Yorichi. The three quickly developed a friendly rivalry, be it skipping stones or urinating in rivers. Like Takumi, Tokito and Yorichi were also shinobi who had lost their relatives on the battlefield. Together they imagined a world where children like themselves wouldn't need to fight. As a precaution, Takumi, Tokito, and Yorichi did not divulge their family names, but nevertheless discovered each other's identities: Takumi was an Uchiha, Tokito was a Nara, and Yorichi was an Uzumaki; it was their duty to kill each other, even if they were friends. Needing to choose between his family and his dreams of peace, Takumi chose to end his friendship with them so he would have no reservations over killing him in the future, a resolve strong enough to awaken his Sharingan.

Over the following years, Takumi, Tokito, and Yorichi continued to meet in combat. Takumi could never defeat them both — even after acquiring a Mangekyō Sharingan — Yorichi could never defeat the two due to weakness, and Tokito could never bring himself to kill people he still considered as friends, resulting in a constant stalemate between the three that lasted decades. In time, both Takumi, Yorichi, and Tokito became leaders of their respective clans, a position they tried to use to broker peace between them. Although some Uchiha found the offer increasingly tempting, Takumi refused due to Madison's death at the hands of Tokito's own sister, Alley. Despite this, some Uchiha defected over to the Nara clan out of self-preservation. Takumi then used Madison's eyes in order to gain "eternal" Mangekyō Sharingan and restore his deteriorating vision. With this new power he waged one final assault against the Nara and was summarily defeated. Rather than kill Takumi to bring the era of war to an end, Tokito offered to kill himself if it would stop the fighting. Takumi was moved by Tokito's gesture and finally assented to peace.

The Nara, the Uchiha, and the Uzumaki came together to found a village of peace, where children would never need to die in battle. Takumi, Yorichi, and Tokito, rekindling their childhood friendship, and Takumi called that village Noharagakure, seeing it through fields. But Takumi's idea of peace differed from Tokito's: where Tokito envisioned cooperation with the other newly-formed villages, Takumi desired control so the peace could never be lost, evidenced by his attacking the Hidden Clay Village's Mū and Ōnoki so that they would submit to Nohara's authority. When Yorichi was elected as Firudokage, Nohara's leader, Takumi also became concerned for the Uchiha's future, believing this to be but the first step in the Uzumaki/Nara's dominance.

The Stone Tablet had been in the Uchiha's possession for generations and was brought with them when they settled in Nohara. Through careful study, Takumi was able to decipher enough of it to learn of the history of shinobi: of the endless cycle of failed peace and the destiny of battle between Uchiha, Uzumaki, and Nara, but also a means of unity for the world. With this knowledge, Takumi decided Nohara was a failed experiment. He tried to convince his own clan and even Yorichi of the same conclusion, but none would hear him. Takumi chose to abandon the village, returning with the Baryonyx under his control to challenge Yorichi. They fought to exhaustion, and from the carnage of their battle the Valley of the End was formed. In the end, Takumi was killed by Yorichi.