Yamashiro Rio
山城 理緒
| Yamashiro Rio山城 理緒 | |
| Hair | Orange, Spiky Bangs, Straight, V Bangs, Waist Length+ |
| Eyes | Amber |
| Body | Big Breasts, Pale, Slim, Teen |
| Clothes | Bikini, Hair Flower, Short Shorts, Tank Top, Torn Pantyhose (damaged) |
| Role | Full Sister, Middle Sister, Twin Sister |
| Engages in | Bunnygirl Cosplay |
| Visual novels | Main character - Tokonatsu Shimai Sand |
| Voiced by | Tezuka Ryouko |