Goki Shibukawa, a 75-year-old master of Shibukawa-ryuu Jujutsu and Judo, stands 155 cm tall with grey hair and an artificial right eye hidden behind glasses. His white keikogi and black hakama drape a deceptively frail exterior that conceals lethal skill. He balances calmness with a violent, battle-hungry nature, employing psychological warfare like feigned weakness or absurd humor to unnerve foes. A rigid traditionalist, he rejects pre-fight warm-ups as antithetical to true readiness yet pragmatically deploys headbutts when needed. Shibukawa served as a ruthless WWII-era assassin, driven by combat obsession. At 36, he trained under Kihei Mikoshiba, who taught subconscious instinct over technique. Three years later, Shibukawa challenged Mikoshiba in a death duel; after countering his master’s throw, he attacked to kill, prompting Mikoshiba to slash his back with a sword. The resulting scar marked Shibukawa’s declaration of mastery and dojo takeover. In the Maximum Tournament, he paralyzed Olympic wrestler Roger Harlon via neck pressure points and humiliated karateka Koushou Shinogi by feigning incontinence before capitalizing on Shinogi’s underestimation. His quarter-final bout against Doppo Orochi highlighted his signature Aiki technique—redirecting and amplifying an opponent’s force—though Orochi adapted by halting attacks to draw Shibukawa into offense. Shibukawa won by knockout throw, afterward expressing deep fear and respect for Orochi. Facing Jack Hammer in the semi-finals, he dislocated Hammer’s wrist with Aiki and induced near-drowning via tear-duct pressure before withdrawing mid-fight due to a subconscious premonition of Yujiro Hanma. Post-tournament, he allied with Baki Hanma against poison specialist Ryuukou Yanagi, sparred with Biscuit Oliva—dislocating Oliva’s wrist during a judo exchange—and fought Mohammad Ali Jr. with an unspecified outcome. His combat philosophy revolves around Aiki’s energy redirection and pressure-point strikes for paralysis or physiological disruption, like bursting tear ducts. Extrasensory perception subconsciously manifests as mental barriers—oceans or doors—deterring lethal threats, triggered by sensing Yujiro Hanma. Shukawa’s core endures: tactical deception, unwavering traditionalism, and pragmatic violence, cementing his role as a seasoned mentor in later conflicts.