Where to stream

Important Witness Private Detective

7.020171 seasonTV SeriesMysteryComedyCrime

Kei Maneki works as a model. He has bad luck with murder cases taking place when he works. Kei Maneki becomes an important witness in these murder cases. To clear his name, Kei Maneki and his model friends Itsuki Suo and Toma Shimon attempt to solve the murder cases.

DirectorsTadaaki Horai·Renpei Tsukamoto

WriterTsutomu Kuroiwa

ProducersKanda Amy Akiko·Yokochi Ikuei

Where to watch

Not available in United Kingdom

Streaming in 1 other country

Important Witness Private Detective isn't on any streaming service in United Kingdom right now, but it's available in Japan. Streaming rights are licensed per country.

Seasons & Episodes

Episode 1

Oct 20, 2017 7.0

Episode 2

Oct 27, 2017 7.0

Episode 3

Nov 3, 2017

Episode 4

Nov 10, 2017

Episode 5

Nov 17, 2017

Episode 6

Nov 24, 2017

Episode 7

Dec 1, 2017

Episode 8

Dec 8, 2017

Cast · Directed by Tadaaki Horai

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NICE FLIGHT!

2022 · 8.3

Oh My Boss! Love not included

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More from Yuki Furukawa · Co-star actor

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More from Tadaaki Horai · Director

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PERSONA 4 the Animation

Important Witness Private Detective — streaming FAQ

Which OTT platform streams Important Witness Private Detective?

Important Witness Private Detective isn't on any streaming service in United Kingdom yet, but it's available in Japan. Streaming rights differ by country — switch your country in the header to see where.

Is Important Witness Private Detective on Netflix?

No, Important Witness Private Detective is not on Netflix in United Kingdom as of September 2026.

Is Important Witness Private Detective on Amazon Prime Video?

No, Important Witness Private Detective isn't on Amazon Prime Video in United Kingdom right now.

Where can I watch Important Witness Private Detective for free?

Important Witness Private Detective isn't streaming in United Kingdom yet, so there's no way to watch it free at the moment.

How many seasons are in Important Witness Private Detective?

Important Witness Private Detective has 1 season in total (8 episodes). The series concluded in 2017.

Are all episodes of Important Witness Private Detective out yet?

Yes — all 8 episodes across 1 season of Important Witness Private Detective are out and available to stream.

Is there a Season 2 of Important Witness Private Detective?

No — Important Witness Private Detective ended after 1 season, so there is no Season 2.

Is Important Witness Private Detective based on a manga?

Yes — Important Witness Private Detective is based on a manga.