Kirihara Kaya
桐原 夏夜
| Kirihara Kaya桐原 夏夜O | |
| Measurements | Height: 157cm, Bust-Waist-Hips: 90-59-87cm |
| Hair | Blond, Brown, Spiky Bangs, Waist Length+ |
| Eyes | Blue, Tareme |
| Body | Big Breast Sizes, Pale, Slim, Teen |
| Clothes | Bikini, Clothing with Ribbons, Dress, Jacket, Miniskirt, Necktie, School Uniform |
| Personality | Clumsy, Friendly, Kind, Relaxed |
| Role | Classmate, Friend, High School Student, Yamato Nadeshiko |
| Engages in | Swordsmanship |
| Subject of | Teasing |
| Visual novels | Main character - Muriyari!? Otome Days |
| Voiced by | Ueda Akane |