Reishi (霊子, Spirit Particles): The main component material of souls. All things in Soul Society are made of reishi.
This includes the spiritual bodies of Hollows and Shinigami, and the two planes of existence, Hueco Mundo and the Soul Society in their entirety. Reishi is invisible to mortals (such as Humans with the exception of spiritually aware ones such as the Quincy); they can, however, still interact with normal matter and produce physical effects. It is noted, however, that reishi and atoms do not mix well.
There is a certain amount of reishi in the Human World, too. Free reishi tends to be found in places closer to nature. Quincy collect this reishi to use for combat in the form of Spirit Weapon. Reishi in the atmosphere is also able to be controlled freely, allowing a person to gather it under their feet so that they can stand in air.
Kishi: the material that makes up the things in the world of the living.
Reishi based TechniquesEdit
Reishi forms the basis for the following techniques:
Hirenkyaku (飛廉脚,"Flying Screen Step/God Step", Viz: "Flying Bamboo-Blind Leg") is a method which Quincy use to travel quickly over short distances. Essentially, it is the Quincy equivalent to the Shinigami's Shunpo, or the Arrancar's Sonído.
Shunpo: The method in which Shinigami use to travel faster than the eye can follow.
Quincy: Letzt Stil: The Quincy gains a vast increase in power, absorbing all the reishi from their surroundings into their attacks. It actually deconstructs objects made up of reishi.
Blue Flames: The Vandenreich possess this unique capability that allows them the ability of creating Blue Flames, which is simply condensed Reishi. It is powerful enough to set fire to the rocks and sand of Hueco Mundo, that usually cant burn.