Nia Remercier is the second princess of the Rain Dukedom and an elder sister of Nike, the series' main female protagonist. She belongs to the royal family of the Rain Dukedom, a land where all inhabitants possess the ability to control weather through their voices. Nia is specifically noted for her skill in invoking the wind, a distinct power within her family’s repertoire. As a supporting character in the story, her primary role is as one of Nike’s siblings, and she appears in the backdrop of the Rain Dukedom’s political and familial dynamics. Her motivations are not heavily explored in the anime, but as a princess, she is presumably concerned with the welfare of her dukedom and her family. Her key relationships are with her sisters, particularly Nike, and the broader royal household. Nia’s development is minimal within the scope of the series, as she remains a background figure rather than a focus of character growth. Her notable ability is her command of wind, which complements the rain-summoning powers of other members of her family. In appearance, she is depicted as a female teen with long brown hair and green eyes.