Rex Draco was a Demonic Dragon that lived for centuries from the Age of Demons until the Age of Monsters, fighting against the Hero's Party he was sealed. The link between his mind and body severed and his soul cast into another world. After gathering his fragments he sees himself bound by chains along with a strange deal, proposed by his former enemy. He would be unsealed and in exchange he would attend the academy where the Hero's descendant was enrolling and helping him in his journey to a new era. "Well, here we go again."