Appearances
- The Silver
- The Silver CASE#4.5FACE (mentioned only)
- The SILVERCASE
- Pre-Lunatics
Nomenclature
- 24 Wards Heinous Crime Prevention Chief Director (The SILVERCASE)
- Boss (The SILVERCASE)
- Chief Director (The SILVERCASE)
- Chief Director Kotobuki (The SILVERCASE)
- Chief Special Agent Shinji Kotobuki (The SILVERCASE)
- Kotobuki (The SILVERCASE)
- Old man (The SILVERCASE)
- Shinji KOTOBUKI (The SILVERCASE)