Kouno Asana
河野 朝奈
| Kouno Asana河野 朝奈AB | |
| Measurements | Height: 149cm, Bust-Waist-Hips: 72-58-79cm |
| Hair | Ahoge, Pink, Short, Spiky Bangs, Straight |
| Eyes | Tareme, Violet |
| Body | Fang, Kid, Pale, Slim, Teen |
| Clothes | Bandanna, Bracelet, Fingerless Gloves, Hairpin, Hoodie, Nurse's Cap, Spats, Sports Shoes, String Ribbon Tie, T-shirt, Thigh-high Stockings, Tube Top, Uniform |
| Personality | Boku, Tomboy |
| Role | Not a Virgin, Twin Sister, Younger Sister |
| Visual novels | Main character - Ripple ~Blue Seal e Youkoso~ |
| Voiced by | Sakurai Mirei |