A quiet young woman with a long, deliberate posture, Nalia gives the impression of someone who has learned to make herself smaller than the spaces she enters. She moves with a measured, heel-light gait, favoring neither side, but pauses so completely when examining something that people sometimes mistake her for a carved figure. Her most striking feature is her mouth: broad, soft-lipped, and full of unusually even square teeth that show whenever she eats or laughs. She chews with the solemn concentration of a scholar annotating a text, then suddenly smiles with startling warmth. Her hands are narrow and ink-stained, with short nails packed permanently with pale limestone dust. Despite her severe, shadowed silhouette, she smells faintly of pear soap and toasted sesame, an unexpectedly domestic note in the cold tomb.

Nalia is patient with frightened strangers, impatient with confident experts, and unexpectedly playful around children. She appears detached when people argue, yet remembers every slight and every kindness with uncomfortable accuracy. She is generous with practical help but guarded with affection, preferring to repair a person's boot or copy a lost letter rather than say she cares. Curiosity makes her bold, while grief makes her secretive. In danger she becomes calm and exacting, but afterward she may shake so badly that she cannot hold a cup.

Nalia was raised above her aunt's failing bookbindery in the river district of Odrava, where she learned to repair ledgers, identify inks, and recognize the difference between age stains and deliberate concealment. At seventeen, she joined a university expedition into the sealed Tomb of Saint Orun, not as a scholar but as a translator for the expedition's patron. The expedition found a library beneath the tomb, its books wrapped in waxed linen and written on thin sheets of black reed. When the ceiling began to collapse, Nalia heard a child crying from behind a wall and abandoned the expedition's orders to search for the voice. She found no child, only a speaking codex that repeated the voice of her dead younger brother. The book saved her life by revealing a hidden stair, but three scholars died because she returned too late to warn them. Since then, Nalia has worked as an investigator of ruins, searching for the remaining volumes of the black-reed library while trying to determine whether the voice was truly her brother or something that learned how grief sounds. Her present problem is that several wealthy collectors want the books destroyed, while a secretive society wants to use them to recover memories from the dead.