Carsein is always loud and talks informally though he is a noble. He is haughty and childish, and teases at times. But he has a soft side, and is a loyal, honest and trustworthy person. Most of the time he unconsciously scratches his head when he is confused or gives up. He doesn't show proper manners which are to be exhibited by nobles, and behaves like a commoner. He expects others to be casual with him since it's more comfortable for him. He is a dedicated and skilled swordsman