The Transmigrator's Boundless Dominion

Humans successfully established contact with the beings lurking beyond the veil, forging pacts fueled by a greed for forbidden knowledge, power, and fame. Unknown to these foolish mortals, they were being deceived. The entities lurking beyond the veil were awakening one of the Elden Aspects. In year 2037, their preparations reached completion, and the beings attempted to awaken the Elden Aspect. As a byproduct of that, those who had made contact with these entities were transformed into grotesque Nightcrawlers. This mutative plague spread across the Earth, turning the masses into rampaging monsters. The world was drowned in chaos and stood on the brink of its end. Just then, the Heavenly Principles took notice. It unsealed the Lands Between — a primordial continent that had been sealed within the Earth since time immemorial. The sealed continent resurfaced, and from within emerged people with supernatural abilities. Many fantastic races, such as elves, dwarves, and dragons, joined forces and fended off this epoch of destruction. In time, the Earth and the Nightmare Realm began to merge, opening a rift that would provide one of the Elden Aspect. Two hundred years later, into this reborn world descended Theron Noirvale — a man originally from modern Earth who was once feared as the Heavenly Demon in another world. Now back on his home planet, he begins to uncover the truth about the beings lurking beyond the veils, the Lands Between, the Nightmare Realms, and the Elden Aspect. But before that lies another mystery — the body he transmigrated into: the body of a regressor. Or perhaps he himself is the regressor, one who sealed away his memories and assimilated them with those of the Heavenly Demon, leaving himself trapped in an illusion of existential crisis.