Throughout the history of Areulla, the Leymon people have dominated and came to build a sophisticated civilization and an orderly society. They developed their own unique physique, with high physical strength and a strong spirit. Technology, however, appeared, for which the civilization was not ready. A large number of Leymon were slaughtered by a forbidden technology known as Life Magic, spurred by the Leymon leader Couber under the deception of King Areulla VIII. While mass-slaughter had not been the intent, it nevertheless caused the nation to descend into civil war, in a conflict that occurred 100 years prior to the events of the story and eventually became known as the Beast War.