Usami Sayaka
宇佐美 紗香
| Usami Sayaka宇佐美 紗香AB | |
| Hair | Blond, Ponytail, Sidehair, Spiky Bangs, Waist Length+ |
| Eyes | Blue |
| Body | Big Breasts, Pale, Slim, Teen |
| Clothes | Ribbon Hair Tie, School Uniform, Sport Bloomers, T-shirt, Thigh-high Stockings |
| Personality | Disciplinarian, Tsundere |
| Role | Discipline Committee Leader, High School Student |
| Visual novels | Main character - Wana II ~Gang Rape~ |
| Voiced by | Nakaya Shiho |