Aura

Aura is a spirit-type force that resides within all inhabitants of Altrea. It links them to a particular deity, and with a seal it can be used to acquire features of the deity to fight or to aid in other purposes. A seal can appear as a symbol on the body or an item of great sentimental value. If the seal is destroyed, then the link with the deity is severed forever and cannot be reconnected.

To use Aura, a seal has to be granted by the deity you're linked to, the stronger the link, the more power can be granted. It is usually focused on the user, improving their physical and sometimes mental abilities. Depending on the talent and potential of the user, Aura can be used to manipulate and enhance weapons too.

Although it differs from person to person depending on the deity and the person's personality, in general the stages of using Aura can be divided into three distinct groups:

1) Stage One: Simple features e.g. ears/tails while the rest of the body remains human. Passive abilities such as better hearing and sixth sense. Control over them is not particularly good, and abilities can be weak. Also cannot be used more than a few times a day, and not for long periods of time.

2) Stage Two: Multiple features and better control over them. Passive abilities can be sustained for longer periods of time and are often stronger.

3) Stage Three: Fully developed senses and multiple features can be controlled with ease. Abilities are strong, and can be used for a long time. In some cases the actual Aura itself manifests and can be seen by the naked eye as a kind of faint glow around the user.

Progressing through the stages can be achieved through frequent usage and training, natural talent or both.

There are people known as ferals, possessing unusually volitile abilities which they are born with, who are not able to control their powers. Ferals are deemed dangerous individuals by society, because they generally cause chaos and bring great change whether bad or good.