Unnbjörg "Yuna" Signar, an Álfur known for her pragmatic demeanor, balances her role as the steady voice of reason among schoolmates Rotte, Asuha, Míst, and Lukka. Her sharp mediation skills frequently temper the chaotic energy of Míst and Lukka, anchoring the group’s dynamic.

Yuna’s tomboyish aesthetic features short hair—depicted as vibrant green in the anime, periwinkle in the manga—paired with spats and T-back underwear, swapped for seasonal practicality in summer. Her Álfur lineage is marked by pointed ears, while her school uniform remains a consistent staple. Manga renditions contrast her anime portrayal with light purple eyes against the periwinkle hair.

Athleticism defines her: a grappling specialist with a fiercely loyal streak, particularly toward Rotte. Though privately insecure about her smaller bust compared to Míst, Yuna channels this into unwavering support for her friends, sidestepping romantic pursuits like those involving Naoya to prioritize group cohesion.

Daughter of Baron Signar, she forged early bonds with Míst and Lukka at school, later integrating Asuha—and through her, Rotte—into their circle. Her history remains rooted in these core relationships, with no expanded lore beyond documented sources.