However, while the Black Dragon Lord Rosani's idea was clever, both the Black Dragon and the Golden Empire underestimated the number of demons.
No one could count how many demons surged into this world through the plane passage, like locusts; the more they died, the more demons crawled out from the other side of the passage.
Thus, after research, the Empire's Caster Corps proposed a rather whimsical idea.
Within the Knowledge Fortress left by the Ancient Magic Empire, there is a spell analysis and fragment left behind by a mysterious and powerful ancient mage.
It is said that this mage once used this Forbidden Magic to challenge the Divine Spirit, attempting to strip the authority and divine position of the gods; the details are unknown.
But the Empire's Mage Legion, by refining and altering the spell's model, allowed the Black Dragon Lord Rosani, who obtained the Spiritual Subordinate Authority of the Ancestral Red Dragon,
