The Kou Empire (煌帝国, Kō Teikoku) is a large military nation, considered one of the most powerful in the current era because of the number of Dungeon Capturers and armies it controls. Their High Priest is Judar, one of the five Magi of the current era. The capital is Rakushou. The empire is also described as very aggressive, using any reason to attack another nation.