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The First Investigative Division is the star unit of the Tokyo Metropolitan Police Department. Oiwa Junichi, the head of the division, leads around 400 elite detectives. He has an extremely heavy responsibility - attends initial investigations at the scenes of all brutal crimes that occur within the metropolis, decides on the course of action of the investigations at the same time as he directs many investigation task forces and gets into investigations himself at the critical phase. However, Oiwa is definitely not a superman. Amid his suffering, Oiwa overcomes this grave responsibility and is quite simply a”life-size hero” and “ideal boss” to his subordinates.

Series Cast

  1. Takashi Naito as Junichi Oiwa

    Takashi Naito

    Junichi Oiwa

    67 Episodes

  2. Yuki Saito as Makoto Hirai

    Yuki Saito

    Makoto Hirai

    67 Episodes

  3. Hirotaro Honda as Takeshi Sasagawa

    Hirotaro Honda

    Takeshi Sasagawa

    67 Episodes

  4. Akio Kaneda as Daisuke Oyamada

    Akio Kaneda

    Daisuke Oyamada

    67 Episodes

  5. Hiroki Suzuki as Kazuma Amagasa

    Hiroki Suzuki

    Kazuma Amagasa

    67 Episodes

  6. Takashi Kikuchi

    Kosuke Inoue

    67 Episodes

  7. Yoshiko Tokoshima

    Koharu Oiwa

    67 Episodes

  8. Hana Hizuki as Mochiko Itaki

    Hana Hizuki

    Mochiko Itaki

    46 Episodes

  9. Nobuyuki Hanawa

    Chikamichi Okuno

    46 Episodes

  10. View More

Full Cast & Crew

Current Season

Season 6 - Keishichou Sousa Ikkachou

Season 6

2022 | 10 Episodes

Season 6 of Keishichou Sousa Ikkachou premiered on April 14, 2022.

View All Seasons

Keishichou Sousa Ikkachou
Keishichou Sousa Ikkachou


Original Name 警視庁・捜査一課長

Status Returning Series


  • See more TV shows from tv asahi...

Type Scripted

Original Language Japanese


No keywords have been added.

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