A SEEMINGLY ENDLESS WAR BETWEEN HUMANKIND AND DEMONKIND For long, humans from the Valkyrian Empire have been capturing and enslaving demonkind found in the vast land of Centrea. As a young demon, Rico Corin lost his family and childhood friend during a village raid. 8 years later and after many events occurred, he now bears the responsibility of leading the Centrea Resistance and Liberation Army to victory.