Aura

Aura (オーラ) is a particular force released by all living beings, usually pouring out of their bodies in varying amounts.

Properties
Aura is a substance with many practical uses. In combat, its basic and most common application is to enhance one's physical abilities like power, speed, and durability, with varying results depending on the quality and amount of aura within a person, while also taking their proficiency in controlling it into account. Likewise, aura can also be applied to equipped gear to increase their performance beyond normal. In practice, this results in superhuman feats without the aid of Magic or Skills. Aura is prominently used to perform Arts like Battlewill to create powerful physical attacks and effects that resemble magic.

By observing the potency of a creature's aura, their strength or danger level can be inferred to an extent. Many security systems within human settlements are built to react to specific auras, usually ones associated with monsters. This suggests there are certain qualities not all auras share and can be attributed to certain groups of creatures or individuals.

Types of Aura

 * Fighting Ki (闘気) or Fighting Spirit: Released when fighting. Used by all living beings.
 * Mystic Ki (妖気) or Mystical Aura: Released by Monsters and all Magical races.
 * Dragon Ki (竜気) or Draconic Aura: Released by True Dragons and their Dragon offshoots.
 * Holy Ki (聖気) or Holy Aura: Released by Holy beings.
 * Spirit Ki (霊気) or Spirit Aura: Released by Elementals.
 * Divine Ki (神気) or Divine Aura: Released by Divine beings.