Hiiragi Sekiyu
柊其 夕
| Hiiragi Sekiyu柊其 夕A | |
| Measurements | Height: 166cm, Weight: 52kg |
| Birthday | 3 October |
| Hair | Cyan |
| Eyes | Violet |
| Clothes | Cravat, Eyepatch, Ribbon Hair Accessory |
| Personality | Stoic |
| Role | Friend |
| Visual novels | Side character - 1bitHeart |
| Voiced by | Shirotsume Hana |
DescriptionA woman working as a guide at 307 Tower. Always distanced and not very emotional. But she knows that's bad, and is practically always smiling. She also has a cruel side. | |