Kouno Yuuna
河野 夕奈
| Kouno Yuuna河野 夕奈AB | |
| Measurements | Height: 148cm, Bust-Waist-Hips: 72-58-78cm |
| Hair | Pink, Shoulder-length, Spiky Bangs, Straight |
| Eyes | Tareme, Violet |
| Body | Fang, Kid, Pale, Slim, Teen |
| Clothes | Dress, Dress Shoes, Fingerless Gloves, Headband, Nurse's Cap, Ribbon Hair Accessory, Spats, String Ribbon Tie, Uniform |
| Personality | Refined, Smart |
| Role | Not a Virgin, Older Sister, Twin Sister |
| Visual novels | Main character - Ripple ~Blue Seal e Youkoso~ |
| Voiced by | Nishida Komugi |