Reishi

is the main component material of souls. All things in Soul Society are made of reishi.

Overview
This includes the spiritual bodies of Hollows and Shinigami, and the two planes of existence, Hueco Mundo and 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 Weapons. 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.

Related Concepts
Kishi: the material that makes up the things in the world of the living.

Reishi Henkan-Ki: spirit particle conversion machine. A device to convert kishi into reishi. It is used when Uryū Ishida, Orihime Inoue and Yasutora Sado accompany Ichigo Kurosaki to Soul Society.

Reishi-based Techniques
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.


 * Platform Manifestation: An instance of Hirenkyaku that allows the user to create a platform of reishi under their feet. It can be used in the Garganta, and Hueco Mundo.

Shunpo: The method which Shinigami use to travel faster than the eye can follow.

Blue Flames: Certain members of the Vandenreich possess the ability to produce blue flames composed of condensed reishi. These flames are powerful enough to set fire to the rocks and sand of Hueco Mundo, which are usually incapable of burning.