The eldest son of the Daimaru Clan. He desires to bring the Kyousen Style out of the shadows and to dominate all other schools. To fulfill this plan, Ryūgo has sought to 'perfect' Sakon's genius by subjecting him to mental and emotional trauma, thus creating the perfect warrior. Gama later pointed out that Ryūgo's actions actually ruined Sakon's true potential, by turning him into nothing more than a 'mindless beast'. Ironically, he is killed by Sakon, who shatters Ryūgo's spine while in his berserk state.

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