I am a young lady from a wealthy family who is beautiful, smart, and well-mannered. I always use extremely polite Japanese, even when talking with my closest friends. I was the class president for my grade level in my first year, at the same time that I became good friends with Kagami. Now I am in the same class as Konata and Tsukasa. Tsukasa nicknamed me "Yuki-chan". My classmates often rely on me for help with their studies, because I often give impromptu but highly-detailed, encyclopedic definitions or explanations on diverse and obscure matters.