Ōchi Fukuchi stands as a towering middle-aged figure with spiked pale hair, a jagged lightning bolt hairline carving across his left temple, and three parallel scars clawing down his right cheek. His attire blends martial authority with defiance—a tailored military uniform sleeves rolled above white half-palm gloves, a sweeping cape replacing the standard hat. During the Great War, his visage hardened with cropped hair and a clean-shaven face. The Holy Sword Soluz Levni’s mark etches his hand, a relic of his triumph over Bram Stoker, whose severed torso cemented Fukuchi’s command of vampiric legions.
Beneath his boisterous facade as the Hunting Dogs’ eccentric commander—prone to crass jokes and theatrical boasts—lurks Kamui, the Decay of the Angel’s icy strategist. This dual existence fuels his resentment toward aging’s toll, though he clings to a warrior’s honor, challenging foes to choose between battle or surrender. Mirror Lion, his ability, magnifies weapon potency a hundredfold, transforming blades into instruments of obliteration. With Shintō Amenogozen, he slices through time itself, rewinding moments to evade defeat.
Rooted in a youth sparring with Yukichi Fukuzawa—their kendo duel ending in stalemate—Fukuchi’s path veered into the Great War’s carnage. Battlefield horrors birthed his conviction that corrupt rulers breed war, a truth he believed Fukuzawa fled by refusing combat. Post-war, their fractured bond endured: Fukuchi drunkenly scarred the Armed Detective Agency’s doorplate during its founding, a gesture Fukuzawa read as mourning their diverging destinies.
Promoted to Hunting Dogs captain after subjugating Bram Stoker four years post-war, Fukuchi masked his Kamui persona behind heroic exploits. Espionage mastery earned him the moniker “Man of a Hundred Faces,” though age dulled his once-peerless stealth. His endgame unfolded through the Decay of the Angel: engineering global strife to frame the Agency, justifying the One Order’s tyrannical peace. By ruling as a dictator, he aimed to eradicate war, accepting the corruption it would seed. Vampiric manipulation and Bram’s betrayal foiled his scheme, culminating in a staged death by his own subordinate during a duel with Fukuzawa—a final gambit to entrust his rival with a world reborn.
The character echoes Fukuchi Gen’ichirō, a 19th-century literary figure, anchoring the narrative’s homage to historical and textual legacies.