The Archmage Without a Mana Bar

[He'll keep his head down at first, but later he'll absolutely rule the world! Guaranteed thrills!] He was royalty on the Eastern Continent, but the demon race destroyed his nation. He fled to the Western Continent of swords and magic, where he entered a magic academy to cultivate and seek revenge. Who could have guessed that his body would reject the local environment, leaving him without a trace of magic power? Still, that won't stop Chiya from becoming a Mage God.