In a world where humans and demons fight, the one who destroyed the Demon King's army was a single hero, a man named Lloyd. After the war, Lloyd, whose power was said to be close to that of God by the Demon King, was ordered by the king to become the lord of the frontier and was kept away. He was also asked to subjugate the emperor dragon that lived in the area, but he quickly defeated it. However, the defeated dragon transforms into a beautiful woman and becomes Lloyd's companion!?