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| Shirō Yuiga | |
|---|---|
| Kanji | 結賀 史狼 |
| Romaji | Yuiga Shirō |
| Characteristics | |
| Gender | Male |
| Personal Status | |
| Status | Alive |
| Era | Taisho Era |
| Race | Human (former) Machine |
| Relatives | Kakeru Yuiga (son) Haruka Yuiga (wife) |
| Professional Status | |
| Occupation | Weapon dealer |
| Voice Actors | |
| Japanese | Kenji Hamada |
Shirō Yuiga (結賀 史狼 Yuiga Shirō) is Kakeru's father and the person who gave Koharu her name. He is a weapon dealer and one of the antagonists of the series. He is the person who gave Koharu her Ability User's uniform.