Human

Humans are the living beings who live on Earth (aka the World of the Living). some Humans develop a way to sense spirits while some may develop a way to sense too, and are known as ''"High Spec". ''These High-Spec Humans are sometimes able to see and interact with spirits, Soul Reapers, and Hollows. A Human's body, like everything else in the World of the Living, is constructed out of Kishi (Japanese meaning "Holdlets") and contains a Soul, bound to it by the Chain of Fate.

Overview
The majority of Humans are completely oblivious to the dangers they are exposed to from Hollows and other evil spirits. It is not known how many Hollow attacks against Humans occur under normal circumstances but Hollows make their former loved ones into their first victims before they begin preying on Plus Souls. A severe enough attack from a Hollow, or - presumably - a Soul Reaper, on a living human would not only result in bodily harm but also in the removal of the Human's Soul from the body. The damage can be easily repaired through Kido if the Chain of Fate wasn't broken. Soul Reapers are forbidden by law from attacking Humans, unless ordered to. They generally ignore Humans, but a part of their duties is protecting a Human in jeopardy from Hollows. Some Soul Reapers have a tendency to view Humans as inferior, despite the fact that the majority of Souls, including most Soul Reapers, are of Human origins.

High-Spec Humans
A very small percentage of the Human population develops a high amount of Spiritual Power; they are known as "High-Spec" Humans. These Humans are able to see and interact with Reishi made objects, such as Souls, to varying degrees and for various reasons.

In even rarer cases High-Spec Humans will develop powers, either spontaneously or due to an intervention, which will allow them not only to interact with Souls but also to defend themselves and others against dangers posed by Hollows and other parasitic spirits.

The Quincy are a group of Humans who learned how to manipulate Reishi and use it as a weapon for hunting Hollows.

In special and unique occasions will appear individuals born from the union of a human and a soul reaper incorporating both humans and soul reaper powers dormant in him/herself. These people have a vast Spiritual Power and with the awakening of their powers, they are Human in their physical body and Soul Reaper in spiritual body, thus making their situation even rarer. If their existence is recognized from Thirteen Court Guard Squads, they will receive the "Seal of Approval for Substitute Soul Reaper".