In 19th-century England, William Twining is a brilliant student and a staunch realist who believes only in science. His logical world is shattered when his uncle’s business fails, leaving him bankrupt. While searching his mansion for valuables, he accidentally summons a demon named Dantalion. William is shocked to learn he is the descendant of the biblical King Solomon and possesses the authority to choose the interim ruler of Hell. Suddenly, he is surrounded by powerful demons, including the charming Dantalion and his rival Sytry, who are all vying for his vote. William must navigate supernatural politics and assassination attempts while trying to maintain his status at his prestigious school. The series has ended, but sign up for a reminder just in case it returns.