The Population Of The Frontier Owner Starts With 0. "Dias The Blue" And A Blue Horned Girl.Ryoumin 0-nin Start no Henkyou Ryoushusama; 領民0人スタートの辺境領主様; 領民0人スタートの辺境領主様~青のディアスと蒼角の乙女~; Ryoumin 0-nin Start no Henkyou Ryoushu-sama ~Ao no Dias to Soukaku no Otome~; Ryōmin 0-ri sutāto no henkyō ryōshu-sama ~ ao no Diasu to Aoi Sumi no otome ~; Ryomin Zeronin Sutaato no Henkyou Ryoushu-sama; The Frontier Lord Begins with Zero Subjects: Tales of Blue Dias and the Onikin Alna; The Population of the Frontier Owner Starts With 0. "Dias the Blue" and a Blue-Horned Girl.; Zeronin; Население приграничного владения начинается с нуля. «Диас Синий» и голуборогая девушка; 從領民0人開始的邊境領主生活
Dias fulfilled his parents' will to help others, and kept fighting on the battlefield to that end. Now known as the “Savior Hero” from his long wartime career, he was rewarded with a vast territory from the king. After having met the horned Kijin girl Aruna who lives there, he begins his new slow life as a lord.