Coco Zenibako is one of the Humanoid Shuuki living in the Hidden Village. Before her transformation, she was a petite young woman with short hair and delicate features. The change into a Humanoid Shuuki brought dramatic physical changes—her hair turned white, her eyes shifted to gold, and a single horn grew from the left side of her head. She also developed the characteristic black marks under her eyes that come with the transformation, along with the standard skintight outfit worn by all Humanoid Shuuki.
What really stands out about Coco is how much she cares about the people around her. She's shown genuine concern for her companions—she used her powers to heal Yuuki, Aoba's younger brother, and got visibly upset seeing the scars on Naon. Among her trio of friends, Coco basically fills the role of the younger sister, with both Aoba and Naon having a more protective dynamic with her.
Content compiled by AnimeList.moe from publicly available sources.
