Four years before Silent Parade (2022), Yukawa and Kusanagi investigate the murder of a writer after a video found in his possession piques Yukawa's interest.
| Actor | Role |
|---|---|
 Masaharu FukuyamaManabu Yukawa | Manabu Yukawa |
 Kazuki KitamuraShumpei Kusanagi | Shumpei Kusanagi |
 Yuko ArakiTomoka Makimura | Tomoka Makimura |
 Ikkei WatanabeHiromi Koribayashi | Hiromi Koribayashi |
 Yu SawabeMinoru Otagawa | Minoru Otagawa |
 Nijiro MurakamiShingo Koshiba | Shingo Koshiba |
 Nana MoriYurina Kurasaka | Yurina Kurasaka |
 Kosuke SuzukiTaiga Jinsaku | Taiga Jinsaku |
 Aki AsakuraAkiho Koshiba | Akiho Koshiba |
 Tetsu HiraharaNot listed | Not listed |
 Tomokazu KoshimuraNot listed | Not listed |
 Kasho Nakamura IVNot listed | Not listed |
 Ryōta WadaNot listed | Not listed |
 Katsumi HyodoNot listed | Not listed |
 Shigeki NakanishiNot listed | Not listed |
| JJun HashizumeNot listed | Not listed |
 Akiyuki NasuNot listed | Not listed |
 Masatoshi NakamuraKazuro Ukai | Kazuro Ukai |