Magical Power

Magic is a mysterious energy that Humans, Elves and Beastkins can use in the new world.

The people who can use magic are the magic swordmen because they use swords when they use Magic.

Dark Knights are swordsmen/swodswomen who imbued their swords with magic.

History

It is theorized by the Cult of Diablos that millions of years ago, the world of "The Eminence in Shadow" originally did not possessed magic. That is until the realms collided resulting in magic that came from one of these realms to leaked into the world.