Sakyonosuke Kanna, a biracial bodyguard of British and Japanese descent, bears the scars of a fractured heritage. Born to a British Royal Navy vice admiral and a former Yoshiwara tayū, his childhood unraveled when his mother was violently torn from him—a trauma that left his eye shattered by a thrown rock, forever hidden beneath an eyepatch. Raised within strict British military discipline, he mastered firearms, favoring twin Remington New Model Army Conversion pistols as extensions of his relentless skill.

Tasked by British diplomat H.S. Parkes to protect statesman Katsu Kaishū, Kanna navigates the Bakumatsu era’s political storms. His allegiance intertwines with the Yuyama Troupe through their leader, Kakunojo Yuyama, whose haunting resemblance to his mother binds him to their vengeful pursuits. A living emblem of clashing worlds, Kanna’s existence mirrors the era’s turmoil: Western imperialism colliding with Edo tradition, tactical brilliance masking private anguish. His stoic resolve, forged through loss and adaptation, fuels an unwavering duty to shield others, even as the ghost of his severed family lingers in every calculated move.