Itsuki Ōtomo, a colonel in the Japanese Ground Defense Force’s 15th Integrated Task Force, specialized in site infiltration, electronic warfare, and intelligence operations. Tall and muscular, with dark eyes and a low-cut fade, he wore military attire consistently, his combat efficiency undiminished by unspecified prosthetic arms. A strict yet principled commander, he prioritized protecting his wife, Rin, and their unborn child. His bond with subordinate Teppei Sugo included frequent sparring sessions; Itsuki honed his skills against a training robot until surpassing Sugo, later reprogramming the machine with his likeness posthumously to aid his friend. Deployed during Operation Foot Stamp, a covert Southeast Asian mission, Itsuki led his unit under false pretenses. Unaware the operation secretly tested Nano VX nerve gas—a banned bioweapon—he and his team perished in the attack. Before deployment, he discreetly cautioned Sugo about risks and concealed critical data within a brandy bottle cap in his locker, exposing military deceit. After his death, a hologram-equipped android replicating Itsuki’s appearance was weaponized for terrorist acts in Japan, framing him as alive to retaliate against officials covering up the operation. Grief-stricken after losing Itsuki and their child, Rin targeted those responsible but died during her assassination attempt. The exposure of the military’s conspiracy and Itsuki’s inadvertent role in its unraveling drove Sugo to psychological collapse, leading to his designation as a latent criminal and subsequent enlistment as a Public Safety Bureau enforcer. Itsuki’s calculated foresight and the moral ambiguities of his mission reflected broader tensions between institutional betrayal and unwavering loyalty.