Blue Oz

There used to be a continent called Emerald. It was the largest of all. It included a multitude of kingdoms and tribes. The Empire of Oz and the kingdom of Bandal were fighting for possession of the land. They dragged neighboring peoples into their wars. In the year 614 of the imperial era, King Amoud of the Alane tribe rallied several tribes to form a new kingdom. He declared war on the Heronis, another tribe of wolf-men.

(Source: Manga Sanctuary)