Lord of the Mysteries: Klein's Brother-in-Law

A fan novel set in the world of *Lord of the Mysteries*—also known as *The Savant's Extraordinary Book*, *The Arcane Mechanic*, and *A Survival Guide to Tingen*. When Eck awakens on Iron Cross Street in Tingen, he emerges from a sinister attack—amnesiac, weakened, and burdened by a curse of unknown origin. His neighbors are the Moretti family, and he soon learns that Melissa’s brother, Klein, was recently visited by the Nighthawks. Klein has always made it clear that he wants Eck to stay away from his sister. Yet demons, the Steam Church, the Nighthawks, and shadowy cultists conducting sacrifices are all slowly closing in. To survive, Eck must conceal his own unnatural state while desperately searching for a way to break his curse. Starting from the docks, the workshops, the steam engines, and the coal-smoke haze of the city, he gradually builds his path forward—until the day when the extraordinary world finally bears witness to the true power of industry and machinery. The story preserves the daily-life atmosphere of the original first volume, follows a romance with Melissa, traces the Savant pathway, and incorporates the protagonist’s ability to wield demonic power.