Nagi Tōma presides over Kuronekotei café, a haven where decommissioned military automata find renewal amidst steaming teacups and quiet camaraderie. His warm brown hair frames a face lit by keen gold eyes, their brightness softened by the glint of a polished monocle. Always attired in an auburn vest layered over a beige long-sleeved shirt, paired with dark trousers and sleek dress shoes, his aesthetic blends rustic charm with understated elegance—a mirror to the café’s fusion of past and present.

Beneath his cheerful, unhurried demeanor lies a sharp intellect and a profound aversion to conflict, his tranquility a deliberate counterpoint to the automata’s war-forged histories. A virtuoso in mechanical restoration, Nagi salvages forgotten components with meticulous care, transforming scars of battle into tools of peace. His workshop hums with second chances: gears once geared for combat now mend coffee grinders, and fractured sensor arrays relearn the art of reading steam curls rising from teacups.

To Karasuba, an automaton cradling relics Nagi repaired, these parts are cherished heirlooms—testaments to a bond transcending utility. Even Nagi’s name whispers his nature: the kanji for “calm” or “lull” in Nagi, while Tōma hints at “distant intervals,” a surname as enigmatic as the man himself. Though his past brushes against figures like Otome Okunomiya, a stern Imperial Army policewoman turned ambiguous acquaintance, Nagi’s focus remains unshaken: nurturing souls, metal and mortal alike, in the quiet rhythm of his café’s rebirth.