Battle Spirit

Battle Spirits are referred to 'wills'. They are the manifestation of a person's will, capable of enhancing all aspects of combat strength, perseverance and also the offensive and defensive capabilities of one's soul.

Battle Spirits can be attached to inanimate objects and move it to ones liking. Sometimes, battle spirits are used as tracking marks and is also capable of controlling a corpse. Battle Spirits can last for millions of years without the need of the caster supplementing it and even if the caster died, they can still maintain their memories corresponding to the time when they were placed.

Only an Earth Soul or higher ranked soul can acquire a battle spirit. The earlier a battle spirit is formed, the stronger and higher rank it will become. Each rank is divided in 4 stages. They are: Elemental, Small Success, Large Success and Perfect.

Abilities
 * Mark someone with the battle spirit to function as a tracker
 * Soul attack
 * Soul defense
 * Soul domain