Kinro, a muscular young man standing slightly above average height, bears brown hair, green eyes, and a jagged scar across his right cheek. A single long lock dangles between his eyes, while chronic nearsightedness forces him into a habitual squint until Senku provides corrective glasses, sharpening his combat precision. He dons a sleeveless royal blue uniform resembling a karate gi, secured by a rope belt, and carries a buckler marked with his village’s star emblem. After Hyoga’s raid, he briefly wields a katana before reclaiming his signature spear. As half of Ishigami Village’s guard duo with his brother Ginro, Kinro rigidly enforces regulations, serving as Ginro’s unwavering moral anchor. He bars Senku from the village despite the scientist saving Kohaku, rejecting bribes like ramen as “sorcery,” yet grows fiercely attached to a gold-plated spear from Senku—a contradiction revealing his struggle between duty and curiosity. During the Village Games, he swallows pride to use Suika’s improvised glasses, leveraging science to defeat Magma, the village champion, cementing his trust in Senku’s methods. When Hyoga’s forces attack, Kinro single-handedly stalls invaders at the village bridge, sustaining critical injuries. Despite Ginro’s hesitation to sever the bridge, Kinro demands sacrifice for communal safety. He resumes patrols before fully healed, dismissing pain as excuses—proof of his unrelenting commitment. Initially dismissive of non-combat skills, he later joins Senku’s literacy school, recognizing communication’s strategic value. His growth includes embracing science’s benefits, from automated labor to medical treatments for Ruri. Beneath his stern exterior simmers occasional wonder, erupting when witnessing Senku’s automobile. He advocates for Senku’s integrity to skeptical villagers, bridging tradition and innovation. A versatile combatant, Kinro masters spear and sword with balanced prowess reflected in his stats—power (3/5), speed (2/5), technique (3/5), reach (4/5). Glasses amplify his battlefield dominance, enabling victories against foes like Magma. His endurance shines during marathon generator shifts until automation intervenes. Evolving from a rule-bound sentry to a Kingdom of Science ally, Kinro embodies disciplined adaptability, proving rigid principles can bend toward progress when survival demands. His journey underscores the fusion of steadfast duty with pragmatic evolution.