"Bring as many hands as you can get! Or else victory will never be ours!"
Once the Abyssal Sky is unlocked, a demon nastier and more relentless than any other will reveal itself.
You will need at least 24 warriors - maximum 48 warriors - to join forces in order to survive against an Ancient Boss.
People without power and the world without deliverance are calling for you. It is time for you to rise as a savior.