Shirai Mitsuki is a beautiful girl who exudes an air of sophistication despite being just a high school student. She has cool eyes and long straight black hair that add to her beauty. She has her own world but loves being around people as well. Although she looks slim, she is the type who looks good in any outfit. She grew up in a relatively wealthy family and has always been independent due to her parents not being overprotective. Currently, she is aiming to become a violinist.