56 Volume II - Chapter 22: Frightening Skill

Ordea and caora... Two types of energy in the Lunerra universe that are different from mana. They also constitute the totality of events that take place on Lunerra.

Unlike mana, these two energies are not without attribute or color. Ordea represents 'order' in its own right and has a tendency to bring 'order' everything it comes into contact with. It also has a relaxing feeling.

And caora, unlike ordea, represents chaos. It erodes and disrupts everything it comes into contact with and has an uncomfortable feeling.

Of course, these two energies are not something that humans can control easily. Especially caora is problematic in this respect because it has a chaotic nature. That's why the people who can control it are not human. They are some kind of another race called 'wiera'.