Naruto: The Dawn of Uchiha Che

On the Night of the Nine-Tails, Konoha burned. Uchiha Che woke amid blood and fire and discovered he had transmigrated as an orphan of the Uchiha Clan. His parents were dead, his clan's territory was under surveillance, and a night of clan extermination loomed in his future. He made no grand claims about saving the world. At first, he only wanted to survive. Fortunately, he possessed an ability almost like a System: he could analyze any ninjutsu he saw, and replicate any hand seals. From Fire Release to genjutsu, from the Flying Thunder God to his own original techniques, from the Sharingan to the Rinnegan, he grew quietly in Konoha's shadows, while the pressure of fate pushed him step by step toward defection. After Orochimaru destroyed Konoha, Uchiha Che left the village and founded an organization called Dawn. They were not Akatsuki, but they collected Tailed Beasts all the same. They wanted to stop the darkness, yet the world saw them as a new threat. The last survivor of the family protected by the One-Tail, an Ice Release ninja from Kirigakure's Blood Mist Era, a refugee from the Land of Whirlpools, a wandering samurai from the Land of Lightning... A group of people abandoned by the shinobi world established their own base beneath the frozen plains of the Land of Snow. When Akatsuki began to move and the struggle for the Tailed Beasts swept across the shinobi world; when the Fourth Shinobi World War erupted and the shadows of Madara and the Otsutsuki descended, Uchiha Che finally understood: Dawn did not mean the absence of darkness. It meant that, even in the darkness, someone was still willing to kindle the first light with their own hands.