Abyss level 999, also known as the Hell Volcano dimension.
Heavenly Molten Mountain.
A massive volcano and countless smaller ones stand erect, magma churning, Hellfire blazing fiercely, thick black smoke pervasive, with myriad ejecta and accumulated ash forming what looks like a mushroom cloud, where lightning flickers.
Great Earth cracks open, gaps spewing endless hot steam, scorching and boiling, an environment of extreme adversity.
Boom! Boom! Boom!
Accompanied by steady, heavy footfalls, within this vast billowing steam, gigantic Dark Shadows tear through the air, emerging.
A multitude of Demons appear here.
Some are Molten Mountain Demon Clan with aged, twisted faces growing on their bellies, bodies incessantly dripping magma.
Some looking like oversized fire elementals with demonic horns, their appearances entwined with rings of Flames, using fire to propel themselves in flight.