Katta Kirifuda, who loves curry bread more than anything else, hates duels, since he is compared to his brother, Shobu Kirifuda, a legendary duelist. Katta has always refused to fight in a duel no matter who invites him. However, he is lured by curry bread on offer and decides to participate in the D.M. tournament as Benchan's stand-in. As Katta gets to know his friends and cards through dueling, his feelings about dueling gradually begin to change. Then one day, Benchan is accused by a mysterious man of taking away his D・M card...!