Yuzuki is Chiyo's friend. She is popular amongst their classmates, and she is often asked for help on various extracurricular activities. However, her personality often makes people feel offended, and Nozaki classifies her as "KY." This means she cannot read the atmosphere or context, and often says or acts inappropriately. Despite her rude and tomboyish demeanor, Yuzuki has an angelic singing voice, and she has the nickname of "Vocal Club's Lorelei.