Ryuuou Yamaguchi
Known for
- Tokyo MPD – From ZERO to HERO (2016)
- 鉄道捜査官 (2000)
- 西村京太郎トラベルミステリー (1981)
- Kyotaro Nishimura's Mystery: Railway Inspector 16 (2016)
- Kyotaro Nishimura Travel Mystery 68: Disappearing Woman in Yamagata (2017)
- Kyotaro Nishimura's Travel Mystery 67: Murder in Hakone - Leaves & Mountains (2017)
- 草津・殺しのトライアングル (2023)