| Nagakura Yachi永倉 やちO |
| Measurements | Height: 156cm, Bust-Waist-Hips: 87-52-88cm, D cup |
| Birthday | 23 May |
| Hair | Blunt Bangs, Brown, Shoulder-length, Twin Braids |
| Eyes | Tareme, Violet |
| Body | Pale, Slim, Teen |
| Clothes | Clothing with Ribbons, Forward Knot Obi, Hair Tie, Jacket, Knee-high Socks, Miniskirt, Naked Apron, Off-The-Shoulder Kimono, Ribbon Tie, Sailor School Uniform |
| Items | Hand Fan, Katana |
| Personality | Atashi, Hotblooded, Mischievous |
| Role | High School Student, Senpai |
| Engages in | Drinking, Fighting, Swordsmanship |
| Visual novels | Main character - Gakuen☆Shinsengumi! ~Otome Gokoro to Kyokuchuu Hatto~ |
| Voiced by | Aoba Ringo |