Qimen has two departments, the bright department and the dark department. There are six major agents in the Ming Dynasty, who obey the orders of the court and are loyal to the emperor. There are twenty-four shadow guests in ANBU, hiding in the darkness and no one knows about them. ANBU Shadow Guests have no names, only surnames. Yang Yi is both a name and a ranking. Only the most powerful shadow guest in the Qimen Anbu is worthy of the name Yang Yi.
