Hayato Ijuin, codenamed Falcon, operates as a Tokyo-based sweeper with a military history forged in Central America’s conflict zones. Initially clashing with Ryo Saeba during wartime, their rivalry evolved into mutual respect and professional partnership. Towering and bald, he conceals his eyes behind mirrored sunglasses and carries an S&W M29.44 Magnum, reflecting his preference for decisive firepower. A veteran of brutal warfare, his tactical mastery spans grenade launchers, javelins, and dismantling advanced drones, tempered by a strict code that spares non-combatants. Though disciplined and stoic, he reveals flickers of vulnerability—like comically recoiling from physical affection—particularly around Miki, his wartime comrade, romantic partner, and co-operator of the Cat’s Eye café. Ryo’s jocular nickname “Umibozu” (sea monk) nods to his austere presence and hairless scalp. He defers to authority figures like the Kisugi sisters, balancing reverence with pragmatic independence. His mechanical ingenuity surfaces in maintaining a battle-damaged robotic aide, routinely repaired after missions. Across iterations, he remains Ryo’s grounded foil: a soldier’s grit offsetting flamboyance, his loyalty and unspoken camaraderie as lethal as his aim.