Devils and Realist

When William Twining, a brilliant young noble, inadvertently bankrupts his family and finds himself in dire straits, a desperate search for anything of value in his family's manor leads him to a hidden room. There, he accidentally summons a powerful demon, Dantalion, who declares William the "Elector" — the one chosen to select the next ruler of the demon world. Suddenly thrust into a supernatural conflict far beyond his understanding, William, a staunch realist and man of science, must navigate a treacherous world of warring factions and ancient prophecies. As more demonic figures emerge, each vying for his favor and the throne, William finds his logical worldview challenged at every turn, forcing him to confront the startling truth that some realities defy explanation.

✦ AI-drafted summary