Human

A Human is any living person who dwells within the Human World, and the vast majority of that world's residents fall into this category. Like everything else around them, their physical bodies are assembled from tiny particles known as Kishi, and inside each one rests a Soul, anchored to the flesh by the Chain of Fate. In the cosmology of the setting, Humans sit opposite the Hollows.

Most Humans go through life completely unaware of the spiritual predators around them. Hollows typically claim their former loved ones as first prey before turning to Pluses and to Humans who carry spiritual power. A hard enough strike from a Hollow, or from a Shinigami, does more than wound the body; it can knock the Soul loose entirely. So long as the Chain of Fate remains intact, Kidō can repair that harm.

Shinigami are bound by law to leave Humans alone unless commanded otherwise, and one of their charges is shielding the living from Hollow attacks. Even so, some of them regard Humans as lesser beings, an odd stance given that most Souls, Shinigami included, began as Humans themselves.

A tiny slice of the population is born with unusually high Reiryoku. These so-called High-Spec Humans can perceive and touch things made of Reishi, such as Souls, to differing degrees; Karin Kurosaki, Tatsuki Arisawa, and Keigo Asano are examples. Rarer still are those who gain outright powers, whether by chance or outside intervention, letting them fend off spiritual threats, as seen with Orihime Inoue, Don Kanonji, and Kyōko Haida.

Two spiritual offshoots of Humanity are singled out. The Quincy learned to weaponize Reishi against Hollows and were driven nearly to extinction by their feud with Soul Society. Fullbringers, meanwhile, can manipulate the souls inside physical matter; each is born to a mother who was attacked by a Hollow before or during pregnancy, absorbing traces of that Hollow's Reishi while still in the womb.