The life essence of all living things. Aura is strength, it is balance, but most of all Aura is power. Though every living being has aura that doesn't mean all Auras are the same as no one is the same. Aura develops over time with knowledge and experience. Though one could learn to strengthen their aura as it is a manifestation of their souls. This is called "Aura Control" Aura Control was mainly used by monks and priest before the war. This allows for the individual to manipulate their aura how they see fit depending on the nature of said manipulation and the skill of the user. Aura Control allows for one to strengthen individual parts of their body or grant overall super human strength. Though depending on how it is used one can quickly deplete their Aura. Aura Control can also be used to change and manipulate the nature of one's Semblance. To either make it stronger or more deadlier. But only the most skilled in Aura Control can regenerate Aura using meditation and calm mind techniques. Aura Control can also be expanded into a stronger capacity in order to push through or increase the intensity of one's Semblance. This is called Perfect Aura Control. Though this technique is advised as a last ditch use for it could potentially expend all of your Aura in one go.