Ains Silvettas was just a boy when enemy forces burned his village to the ground. As the sole survivor pulled from the rubble, he lost his right arm, left leg, and right eye. Yet amid the destruction, what captivated him was not the tragedy but the magic he witnessed for the first time. Consumed by an obsession to understand this power, he withdrew from society entirely, sealing himself away in a secluded cabin in the woods for two thousand years.

When he finally emerges from his isolation, the world has transformed beyond recognition. The small village he once knew is now the Autonomous City of Ains Territory, a sprawling metropolis that thrives on advanced sorcery and magic - all built upon the foundation he unknowingly created. His old research notes, scribbled and left behind, have become the Original Scripture, a holy grimoire revered by generations of mages. And Ains himself? The one-eyed, one-armed, one-legged scholar who simply wanted to pursue magic is now feared and worshipped across the land as the Demon God.

Ains himself remains blissfully unaware of his terrifying reputation. He steps into this new world driven by the same innocent curiosity that led him into seclusion millennia ago, wanting nothing more than to continue his magical research. But his mere presence disrupts the fragile balance between nations. Every spell he casually casts, every truth about the world he touches in his quest for knowledge, sends shockwaves through the political and magical order. The legendary sorcerer who laid the foundation for modern magic embarks on a deceptively simple journey, accidentally shattering the peace of the autonomous city and beyond, all while wondering why everyone seems so afraid of a disabled scholar who just wants to study.