In a world ruled by magic and rigid social hierarchies, a boy named Ji-hyeon is born into a poor farming family on the outskirts of a small village. But no one knows his deepest secret—in his previous life, he was the Demon King, a feared and powerful ruler of the magical world.
After being destroyed by betrayal and holy power, his soul is reincarnated into the body of a mere human—without strength, without influence, and without anyone who remembers him.
However, even in this fragile human body, his unparalleled intelligence remains. From a young age, Ji-hyeon shows an uncanny ability to read, understand magic, and sense mana. He hides his talents, quietly growing up in obscurity, until the day he steps into a greater magical world—starting with an elite magic academy, and eventually facing ancient races, inter-kingdom wars, and entities from a forgotten era.
With sharp intellect and unwavering resolve, Ji-hyeon gradually rebuilds his power. But this time, he doesn't seek to rule the world as he once did.
He seeks to understand it. To change it. And to discover—can a Demon King truly live as a human?