| Mihama Yuuka美浜 優香O |
| Measurements | Height: 159cm, Bust-Waist-Hips: 77-53-81cm |
| Birthday | 4 December |
| Hair | Blond, Intake, Long, Side Tail, Sidehair |
| Eyes | Blue |
| Body | Pale, Slim, Teen |
| Clothes | Bikini, Blouse, Dress, Hair Flower, Hairpin, Knee-high Socks, Ribbon Hair Tie, Ribbon Tie, Sailor School Uniform, School Uniform, Trousers |
| Personality | Altruistic, Clumsy, Friendly, Kind, Watashi |
| Role | Full Sister, High School Student, Neighbor, Older Sister, Student Council President |
| Subject of | Teasing |
| Visual novels | Main character - Koisuru Shimai no Sextet |
| Voiced by | Ogura Yui |