Reiryoku (霊力, Spiritual Power) is a power aligned with the spiritual sensitivity and willpower of the user. It is used by Shinigami to provide power for their various feats and to effectively channel the powers of their Zanpakutō. It can also be used to cast Kidō, magic spells created by the Shinigami. Reiryoku can even be coalesced into a physical form and thrown or shot as a projectile. As a display of potency, spiritual beings have the ability to incapacitate the opponent's movement and simultaneously frighten them, by means of dispersing Reiryoku into the air. The aforementioned ability is known as Reiatsu, possessing power that could be literally felt within the atmosphere.
Every spiritual being and every human has a certain amount of Reiryoku. If this amount is higher than a certain degree, it grants the person superhuman abilities. Those with such an above-average level of Spiritual Energy are very rare among living humans. It seems to be that the most basic ability that humans with a higher level of Reiryoku have is the ability to see ghosts: Pluses, Shinigami and Hollow alike. Shinigami are essentially departed souls in Soul Society with very high levels of Reiryoku who receive special training to utilize their powers. Hollows, if they make active use of their Reiryoku, usually do it to catch their prey or to evade Shinigami more effectively, the extreme case being the Arrancar, who have an amount of Reiryoku equal to Shinigami, and are able to use it just as efficiently in combat. Read More...
