Once a notorious outlaw whose moniker "Fudou the Ogre" struck terror across the land, Fudou emerged from a brutal orphaned childhood steeped in nihilism, viewing human life as inconsequential. His early years forged him into a merciless force, ravaging villages with unrestrained violence. This existence fractured when he encountered Yuria—a defiant young woman who risked her life shielding puppies during one of his rampages. Her courage shattered his nihilism, igniting an understanding of life’s sanctity and reshaping him into "Fudou of the Mountains," a protector sworn to the Nanto Goshasei and guardian of the Last Nanto General.

Renouncing his past, he channeled ferocity into nurturing orphaned children, including Tanji, Jiro, and Hana, offering them the familial bonds he was denied. His colossal strength, once wielded for destruction, became a shield—crushing skulls with bare hands or ensnaring foes within his titanic frame to defend his makeshift family. This unyielding resolve even gave pause to the conqueror Raoh during their clash, though treachery by Raoh’s subordinates circumvented their leader’s hesitation, ending Fudou’s life in a barrage of gunfire.

Beyond guarding the Nanto legacy, Fudou’s loyalty to Yuria anchored covert missions—capturing the warrior Rei at her command and spiriting her to safety amid clashes between Raoh and Shin. Until his final breath, he stood as a testament to redemption: a once-savage ogre reborn through compassion, his fists eternally clenched not for slaughter, but to shelter the vulnerable.