The accountant for the student council. He is a merchant working at the center of Musashi's business association, and has a contract with the god of commerce that allows him to perform powerful attacks based on how much money is offered to it. He's also what one would call a miser—always using whether or not he stands to profit as the basis of his decisions in everything. His nickname given by the Testament Union is "Poker Face".
Source from Wikipeida