| Kitajima Mizuki喜多嶋 瑞貴 |
| Measurements | Height: 160cm, Weight: 48kg, C cup |
| Hair | Black, Blunt Bangs, Braided Crown, Hime Cut, Long, Parted in Middle |
| Eyes | Garnet, Hosome |
| Body | Medium Breasts, Pale, Slim, Teen |
| Clothes | Bathrobe, Blazer School Uniform, Dress, Gloves, Pantyhose, Ribbon Tie, Sport Bloomers, T-shirt |
| Personality | Assertive, Honorable, Old-fashioned, Proactive, Refined, Stubborn |
| Role | Full Sister, Half-orphan, High School Student, Ojousama, Older Sister, Student Council President, Yamato Nadeshiko |
| Visual novels | Protagonist - Gakuen Aijoku Sayokyoku ~Owaru Koto no Nai Zetsubou no Utage~ |
| Voiced by | Kawano Sachi |