shinigami-Kiki

Shinigami are departed human souls that have gained supernatural powers. They can only be seen by other spiritually aware entities, which excludes most humans. Shinigami, as well as most other types of spirits, are quite capable of influencing their environment. Additionally, they can be injured and die like regular humans, though it takes considerably greater injuries for the latter to occur than it would in regular humans. The most prominent power possessed by a shinigami is their zanpakutō, a sword generated from the shinigami's soul. Shinigami also naturally give off spiritual energy, which varies greatly in magnitude with the strength of a shinigami. A zanpakutō is a physical manifestation of this force concentrated into a blade.