Kaina Noss holds the position of deputy branch chief at the Zebrudia branch of the Explorers Association. She serves as the primary assistant to the branch chief, Gake Velda.

Personality-wise, Kaina is characterized by her calm and responsible nature. She is described as someone who can always coolly and logically analyze any given situation. This level-headedness makes her an essential stabilizing force within the branch, as she often acts as a mediator who extinguishes the metaphorical fires lit when her superior is agitated or provoked by the antics of the protagonist, Krai Andrey.

Her primary role in the story is to manage the various important administrative affairs of the Explorers Association branch and to support the often reckless actions of her colleagues. She is portrayed as a dependable and trusted member of the organization who is always ready to lend a helping hand to anyone in trouble. While her abilities are not extensively detailed, she is noted for her intelligence and her skill in easing tensions among her coworkers, ensuring the branch remains functional and calm. Information regarding her personal background, specific motivations, character development over the course of the series, and any notable combat or magical abilities is not available.