Kyōshirō Shirogane, also called Kyōshirō of Shiga or Kyō, is a white Kishu dog marked by numerous scars across his back, tail, legs, chest, cheeks, forehead, face, and left ear—permanent traces of his brutal upbringing. His appearance features prominent black eyes and distinctive eyelashes, though his anime depiction lacks eyelashes, shows inconsistent scar placement, and adds a gray smudge under his nose.

Born the youngest of four puppies, Kyōshirō endured severe abuse from his father, who traded him and his siblings to a mastiff for a boar. His mother knew the puppies faced death if they stayed but did nothing. Years later, Kyōshirō and his brothers returned to find their mother’s skeleton, igniting a quest for vengeance. His brothers attacked their father near a cliff, resulting in all three falling to their deaths. Orphaned, Kyōshirō dedicated himself to rescuing abused puppies, forming a pack in Shiga Prefecture exclusively for dogs under one year old who suffered parental cruelty. This pack defined his early life.

Aggressive, impatient, and violent, Kyōshirō reacts with immediate anger, rarely weighing consequences. He harbors deep distrust of adults, viewing them as liars who exploit their young, and initially believes violence is the only answer to injustice. Yet he demonstrates a core righteousness: he refuses to harm travelers, protects puppies, and rejects serving the antagonist Hōgen. His commitment to saving abandoned young dogs drives him to risk his life, as when he substitutes himself for the captive puppy Teru. Key moments—Teru’s father sacrificing himself and receiving aid from Ōu Army males—begin shifting his perspective on adults.

His character evolves after joining Weed’s Ōu Army. Though initially challenging Weed’s leadership and nearly leaving over ideological clashes—particularly Weed’s refusal to kill defeated foes—Kyōshirō becomes one of Weed’s closest allies. He infiltrates Hōgen’s forces as a false defector but is exposed and savagely beaten. Rescued by the older Ōu Army member Tōbē, he witnesses Tōbē sacrifice himself to ensure his escape during Gin’s rescue. This loss profoundly impacts Kyōshirō, leading him to vow greater maturity and emotional restraint. Despite this growth, his impulsiveness persists, sometimes requiring intervention from calmer allies like Mel or older dogs.

In later arcs, Kyōshirō remains fiercely loyal to Weed, weeping when believing Weed dead and rejoicing at his return. During the Russian Arc, he recruits the adult Teru and his group to aid Weed against Viktor in Hokkaidō. He develops a complex dynamic with Weed’s son, Orion, initially viewing him as undisciplined and reminiscent of his younger self. Though harsh, Kyōshirō occasionally offers Orion praise or guidance, eventually showing him respect as Orion matures.

In *Ginga Densetsu Weed: Orion*, Kyōshirō survives a volcanic eruption and is imprisoned in a mine by Jinemon Kurohabaki. Freed later, he fights in the final battle against Masamune Kurohabaki. His role continues in *Ginga: The Last Wars*, where he joins Weed’s group to investigate mysterious deaths and confronts Akakabuto’s descendants. During this conflict, he ignores Gin’s orders to attack the bear Monsoon directly, showcasing his enduring impulsiveness. He survives beyond these events, though his involvement in *Ginga Densetsu Noah* remains unmentioned.