It's the Black Dragon Asos!
George recognized the voice. When Lily advanced, a shadow had appeared, and that was Asos.
"You used us to break your seal?"
George finally figured it out and spoke coldly.
"Call it what you want. We were helping each other," Asos' voice echoed.
Clang, clang...
The chains kept clanging. The last pillar shook even harder, as if it might fall at any moment.
George flew higher again and asked, confused, "You were the final boss of the Underworld, right? Why did you get sealed too?"
"Final boss? Hmph!" Asos roared, "I was tricked by the Demon King. He made me guard the Underworld. I refused, so he sealed me along with the remaining Felborn."
"Demon race King?" George was shocked. Demon race Kings were all top-level monsters over 90. What made this dragon special that a Demon King would seal it here?
Boom, boom...
The pillar shook violently.
