Tsuchiya Seishirou
土屋 征四郎
| Tsuchiya Seishirou土屋 征四郎O | |
| Measurements | Height: 173cm, Weight: 61kg |
| Birthday | 10 January |
| Age | 56 |
| Hair | Black, Short |
| Body | Adult |
| Clothes | Blazer, Glasses, Turtleneck Shirt |
| Role | Villain |
| Visual novels | Main character - Guisard ~Bokura wa Omoi o Mi ni Matou~ Main character - Guisard Shuffle ~Bokura wa Omoi o Tokihanatsu~ Main character - Guisard Fandisc ~Bokura no Omoi o Tsumekonde~ |
| Voiced by | Oohashi Takamasa |