Daichi Misawa is a highly analytic Duelist who resides in the Ra Yellow dorm at Duel Academy. Daichi is a mathematic genius who covers his cards and the walls of his room with endless numeric formulas, believing that everything in life can be calculated arithmetically. The neglect of his character is a running gag throughout the series in both incarnations.
Originally a rival and friend of Juudai Yuuki, Daichi's role in the anime decreases as each arc passes, although his role in the manga does not.