Sora

Dull bluish-grey hair falls to Sora's shoulders in an uneven cut, with a lone strand hanging across his brown eyes. He wears sandals and the temple's monk robes, altered so the right sleeve runs long: it hides a bandaged arm that, when he is angry or channelling demon chakra, takes on the look of a beast's clawed limb rather than a human one.

The cruelty he faced after losing control of Kurama's chakra as a boy left him guarded and slow to trust. Ashamed of his monstrous right arm, he keeps it wrapped and out of sight, and he bristles with insecurity when people stare, much as other jinchūriki do. To shield himself from the lies he has weathered, he hides behind a cool, indifferent front, dutiful and respectful toward his monastic elders yet blunt and insulting to nearly everyone else. His first meeting with Naruto is a wall of mutual suspicion, each pegging the other as a grave robber, but the two eventually recognise how much they share and become friends. Rude and hot-headed by habit, he forgets to thank Asuma and needles him as an old man, though he speaks of his father with genuine reverence. Deceived by the disguised Kazuma into hating Asuma and hunting the Hokage, he nearly surrenders himself to the demon within before Naruto reaches his heart, after which he settles into a lighter, if still teasing, temperament.

When the Nine-Tails attacked Konoha, its scattered chakra was gathered by Sora's father, Kazuma, who secretly sealed it into his son five years later, engineering a partial copy of the beast and making the boy a pseudo-jinchūriki. Believing his father dead, Sora went to live among the monks of the Fire Temple, where he trained fiercely, hoping to clear the name of a man everyone else called a monster. One day the sealed chakra erupted and he razed the temple, and the monks turned on him with the same scorn Naruto once knew. As a fighter he is a skilled ninja monk with a rare Wind Release affinity, wielding a triple-bladed claw enhanced by chakra flow, unleashing wind attacks like the Beast Tearing Palm and Gale Palm, and, at his most dangerous, cloaking himself in progressively stronger jinchūriki transformations up to a Version 2 state with its own crude Tailed Beast Ball.

During the Twelve Guardian Ninja affair, Sora ambushes Naruto near one of the hidden tombs Team Yamato has come to guard, and Chiriku breaks up the clash. Sent to look into a string of grave robbings, he encounters the enemy leader Furido, who taunts him and hints at knowing his father. Reassigned to Konoha in place of an injured Sai, Sora trains in wind nature under Asuma, only to learn that Asuma is the man who killed Kazuma, a revelation that shatters him. Captured by Anbu and enraged at being hated even here, he attacks Asuma and turns to Furido, who reveals himself as Kazuma and uses the Five Elements Unseal to loose the full sealed power within him. On the verge of giving his body over to the demon clone, Sora is finally reached by Naruto, who convinces him that he truly has friends. The clone is expelled from him for good, and after recovering he bids Team Yamato farewell, sending an apology to Asuma before setting out to travel the world.