Hiro is a trainee engineer stationed aboard the airborne craft *Quin Zaza*, sporting short orange hair with blunt-cut bangs that obscure both eyes, his freckled face often pinched in a scowl. His uniform—a white cap, crisp engineer’s jumpsuit, and sturdy blue belt—clings to a frame perpetually tense with irritation. His temperament tilts toward the sardonic; he grumbles openly about assignments he deems needlessly convoluted or bogged down by inefficiency, his critiques sharp but seldom without pragmatic merit. Though dedicated to his role, his demeanor blends technical focus with a short fuse, quick to voice discontent when systems—or superiors—test his patience.