Earl Roswald Seryuu is the lord of Seryuu City, who was described as having a goatee that does not really suit him. He was first seen while getting a report from his consul, Ortes, about the new labyrinth that had appeared in the middle of his city. He suggested giving Satou a gentleman title for saving viscount Belton's life, stopping the rebellion, and uncovering the plot of the demon. The gentleman title is a false noble rank that is said to be given to 10 people a year, which grants the person to privileges at the lowest seat of nobles and an exemption from taxes. However, it didn't seem like the earl was serious about it.
He has a goatee