Nina is a fairy who appears as a supporting character in the story. She lives in a house in the royal capital, a property that Kaede, the protagonist, later purchases. Before meeting Kaede, Nina had taken up residence there and almost never showed herself to other people. This reclusive behavior changes gradually when she encounters Kaede, as she loses her wariness and becomes friendly with her. Physically, Nina is a fairy with light green hair and green eyes, features that are complemented by pointed elf ears and wings. Her appearance is that of a young child, and she typically wears a dress. Her role in the narrative is that of a companion who shares a living space with Kaede, developing a bond of trust and friendship over time. Beyond this, her specific motivations, personal history prior to the story, and any notable abilities are not elaborated in the available material. Her key relationship is with Kaede, who is the first person Nina truly opens up to. There is no documented character development or arc beyond the initial shift from wariness to friendliness.