the population of the frontier owner starts with 0. "dias the blue" and a blue horned girl. dias fulfilled the wish of his parents to support others, and he vowed to fight on the battlefield to that end. now known as the "savior hero" of his long wartime career, he was rewarded with the king's vast territory. after meeting the horned kijin girl aruna who lives there, he starts his new slow life as a lord.