Mercator Knight(2026)

Mercator Knight is a mystery series following the eccentric detective Ayu Mercator, a sharp-dressed investigator known for his arrogance and distinctive style. When a celebrated female author begins receiving mysterious playing cards in the mail, she fears they may be a prelude to murder. Mercator steps in to unravel the cryptic threat, drawing on his considerable detective skills to identify the sender and their intentions. As the cards continue to arrive, the case deepens into a complex puzzle that tests both his deductive abilities and his difficult personality. The series blends detective work with psychological tension, exploring the cat-and-mouse game between investigator and an unknown antagonist.