Yui Hideki
由井英騎
| Yui Hideki由井英騎 | |
| Age | 28 |
| Hair | Black |
| Body | Muscular, Tanned, Young-adult |
| Clothes | Bracelet, Coat, Crop Top, Jacket, Pendant Necklace, Scarf, Swimsuit, T-shirt, Trousers, Turtleneck Shirt |
| Personality | Ore |
| Visual novels | Main character - S-Tripper |
| Voiced by | Fuji Bakuhatsu |