Noa, also known by her original name Non Gou, is a young witch from the magic realm who is sent to Earth as a candidate for the throne of the witch world. She is placed with a former witch named Kilia and her family, living as a daughter in the Gou household. Noa possesses a calm, cool, and collected demeanor that stands in stark contrast to her energetic and impulsive rival, Megu. She is an exceptional student in magic school, excelling in both academics and athletics, and she initially holds a disdain for human society, viewing humans as inferior and often refusing to understand their emotions.

Her primary motivation is to prove herself worthy of becoming the queen of the magic realm. She takes the competition seriously and is driven by pride and a desire to win on her own merit. In the story, Noa functions as Megu's main rival, constantly challenging her in magical duels, school life, and personal growth. Their relationship is defined by frequent clashes, but over time it evolves beyond simple antagonism; Noa’s cold exterior occasionally cracks as she experiences the complexities of human bonds.

Notable abilities include powerful witchcraft, which she wields with precision and control, as well as a sharp intellect and impressive physical prowess. Throughout the series, Noa undergoes development as she begins to question her own arrogance and learns that understanding human feelings may be essential to her role as a future queen. While she remains a formidable competitor, her journey reveals a deeper, more vulnerable side beneath her polished surface, making her a key figure in Megu’s own growth and in the series’ exploration of empathy and self-awareness.