The Four Heavenly Kings responded in unison, "Ooooh——!"
From a distance, the Supreme Frost Dragon Overlord roared, "Roar Roar Roar——"
At Wraith Sacred Mountain, along the four hundred and forty-four tributaries of the Bone Mountains, at thousands of Undead gathering points, countless Undead all looked up at the sky and let out deafening roars.
Black fog surged toward the heavens.
The mark of death was imprinted upon the Azure Sky.
...
Outside the Country of Corpse.
Amidst the desolate wilderness, within the withered forest, in front of the shattered rocks.
One after another, high-level Undead with flickering soul flames in their eye sockets gazed in that direction.
"Is the Country of Corpse about to cause trouble again? They couldn't be coming for Black Prison Castle, could they? I must report this to the great king immediately. The rise of the Country of Corpse is indeed too rapid! Where in the world did these guys spring from?!"