Ukyo Saionji combines a pacifistic nature with sharp analytical skills, distinguished by his extraordinary auditory precision and strategic acumen. Formerly a sonar technician in the SDF Navy, his acute hearing was refined to detect even the faintest noises—a skill that persisted post-revival, proving vital for intelligence operations and safeguarding the Kingdom of Science. Initially aligning with Tsukasa Shishio’s Empire of Might for survival, Ukyo covertly undermined its brutality by feeding intelligence to Senku Ishigami’s allies and orchestrating nonviolent resolutions. His unwavering commitment to peace compelled him to defect to the Kingdom of Science, demanding a strict no-casualty policy in their campaigns. A master archer fluent in Japanese and English, Ukyo leveraged these talents to disable foes non-lethally, ensuring minimal harm. In the Treasure Island conflict, his strategic brilliance neutralized threats like Ibara and dismantled a petrification weapon. Keen analysis also unmasked Gen Asagiri’s impersonation by detecting subtle vocal strain. During the Age of Exploration, Ukyo aided in building the Perseus and scouted for petrified survivors. His meticulous nature surfaced when probing anomalies like Treasure Island’s statues, while pragmatic compromises saw him endorsing non-lethal arms to thwart existential dangers. Surviving repeated petrifications, Ukyo emerged as a resilient cornerstone of the Kingdom. Post-second petrification, his revival three years later fueled the rise of Superalloy City and pivotal missions against the Why-man, including a San Francisco expedition. Evolving beyond idealism, he learned to balance ethical rigor with leadership demands, leaning on Senku and Gen’s counsel during morally ambiguous crises. Sporting short white hair and piercing blue-green eyes, Ukyo’s lean frame dons an orange turtleneck and khakis, his initial paper cap exchanged for a Kingdom-branded one. Typically composed, he occasionally betrays shock or relief—especially when Senku’s audacious plans avert disaster. Haunted by past hesitations yet driven by unyielding ethics, Ukyo’s loyalty never wavered. He navigated the tension between principle and practicality, championing cooperative progress grounded in moral rigor—his legacy etched into civilization’s rebirth.