Nagaoka Kokone
長岡 ここね
| Nagaoka Kokone長岡 ここねO | |
| Measurements | Height: 170cm, Bust-Waist-Hips: 87-58-83cm |
| Birthday | 30 October |
| Hair | Brown, Long, Parted to Side, Ponytail, Spiky Bangs, Straight |
| Eyes | Green |
| Body | Pale, Teen |
| Clothes | Bow Tie, Hairpin, Pantyhose, School Uniform |
| Role | Childhood Friend, Comic Artist, High School Student, Student Club President |
| Visual novels | Side character - Ore no Kanojo ga Gachi Hentai Sugiru |
| Voiced by | Hamura Nao |