Energy

Energy is the name given to power sources in Crystalia and outside it, being used by weapons, individuals and routine objects.

Inner
Inner energy is the name given to  spiritual energy based on Yin/Yang properties, such as Light and Darkness. It can be manipulated by Eternal or Chaos blades, as well as certain individuals.

Natural
Energy that comes from outside the body, directly from nature which includes the elements Fire, Wind, Earth, Water and Lightning. It can be used by certain individuals and are of natural power for Eternal Blades and Chaos Blades.

Chaos
Chaos Energy is energy from inside the spirit of crystalians, and can be manipulated freely by any crystalian with formal training. The ones with best control over Chaos Energy are the Warriors of Harmony and Megabusters. It can also be extracted from several crystals around Crystalia which power objects used everyday.

Positive and Negative properties:
Chaos Energy has Positive and negative properties. Depending on the inner situation of the user, they can variate. Emotions highly influence over the Chaos Energy.

Aura
Aura is the name of the inner energy inside any living being, crystalians can control their aura directly allowing them to ascend in different forms and in special abilities, such as sensing and flying.

Chakra
Energy that flows inside the body, only some can use this old kind of power which allows different abilities, such as walking on water, climbing vertical structures and liberating it in attack form.

Reiatsu
Appearing only once, it was shown to allow users to use enchantations and liberate attacks, as well as binding the enemy with special spells. The number of spells is unknown.