Spirit

A Spirit is a person's own "self". It is born the same time it's master is born. A Spirit lives inside it's master mind and resides in the Spirit Dimension whenever it is not needed or is forgotten by it's master. Spirits are unable to obtain a physical presence outside of it's master's mind unless it forms a pact with it's master to do so and is given permission to do so. A pact is also required for a master to use his/her spirit.

The type of spirits known are Weapon Spirits. They are used by Shinigami and used by with Spirit Weapons.