Familiar Spirit

Also called Patrons, Shikigami or guardian angel in the Western religious world, are demons that exist between hell and the human world, having been linked to a Onmyoji. Both spirit and human caster, will share the same pain, damage or pleasure.

Characteristics
Once in a lifetime, an Onmyoji can make a contract with a demon. Once the contract is made, the demon becomes the shadow and guardian of the Onmyoji and both share their life. Meaning if one dies so will the other, in exchange unique abilities are granted. It is forbidden to exchange once own soul for even more power, as this could have dangerous consequences. To use certain abilities different Kharma of an Onmyoji is needed, like evil or good.

Summon
To summon a Familiar, a human-shaped paper doll, with a mark of the Onmyoji as a fingerprint is needed (Only the correct user can summon one). Using activation words while holding the paper, will manifest the demon as a physical being in the real world. The process art of calling is called Tsuchigyo.

Powers/Abilities

 * Multiple Unique Abilities depending on the spirit.
 * Enables the use of "Jutsu" magical abilities, an Onmyouji can use at that point, a catalyst card is needed.
 * Mokugyo: This is the art of strengthening the body and protecting it from demons.
 * Fire: An offensive technique that is effective in purifying
 * Tsuchigyo: A summoning technique that can bring demons and Familiar into the world.
 * Kingyou: An alchemical formula that can change the nature of all things and manipulate the soul.
 * Suigyo: The power of life to weaken demons and heal people.

Examples of Familiar Spirit

 * Akaname (Rodrico Nakatomi)
 * Doppelgänger (Abe Koso)
 * Jormungand and Yuyami
 * Nurarihyon (Abe Yumei)
 * Vanargand (Yagyuu Towako)
 * Weapon Arm (Shiki Reika)

Trivia

 * They function similar to a Stand of Jojo or a Persona.
 * The origin of them might be the Otherworld.