

Unification of Japan Gaiden: Yamazaki Ichimon 4
2022, Japanese. Directed by Hiroyuki Tsuji.
A series of resident disappearances occurs at a Kyowakai-owned apartment in Kabukicho, Shinjuku, home to many people with complicated backgrounds. Nakajima (Yoshimi Tachi) volunteers to investigate, and Tamura (Yoshiyuki Yamaguchi), uneasy about sending him alone, orders Saito (Katsuya) to accompany him. Despite searching Kabukicho, they find no solid leads. That night, Saito recalls a rumor about the “Kabukicho kidnappings” from 20 years earlier, told to him in prison by Wang (Weng Huarong), and reaches out to him. Meanwhile, Nakashima heads into Kabukicho alone under the guise of patrol, hiding a personal motive. Just then, an unknown number calls Nakashima’s phone…
- Runtime
- 1h 26m
- Post-credits
- None listed
- Language
- Japanese
- Rated
- Check local
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Where to watch Unification of Japan Gaiden: Yamazaki Ichimon 4
Unification of Japan Gaiden: Yamazaki Ichimon 4 isn’t streaming on any OTT platform in India yet; it released on 25 April 2022.
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日本統一外伝
Part of a series
日本統一外伝: watch order
Cast & crew
Details
- Released
- 25 April 2022
- Original title
- 山崎一門4 ~日本統一外伝~
- Country
- Japan
Check ratings elsewhere
News & fan talk
Watch before Unification of Japan Gaiden: Yamazaki Ichimon 4
In release order. The films it follows, and anything it builds on.

Unification of Japan Gaiden: Kawatani Yuichi
2019
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Unification of Japan Gaiden: Yamazaki Ichimon
2020
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Unification of Japan Gaiden: Yamazaki Ichimon 2
2020
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Unification of Japan Gaiden: Tamura Yuto
2021
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Unification of Japan Gaiden: Tamura Yuto 2
2021
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Unification of Japan Gaiden: Yamazaki Ichimon 3
2022
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After Unification of Japan Gaiden: Yamazaki Ichimon 4
What comes next in the series.

Unification of Japan Gaiden: Yamazaki Ichimon 5 — Yokohama Deathmatch
2022
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Unification of Japan Gaiden: Yamazaki Ichimon 6 — Kobe Blitzkrieg Tactics
2022
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Unification of Japan Gaiden: Yamazaki Ichimon 7 — The Little Romances of the Yamazaki
2023
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Unification of Japan Gaiden: Yamazaki Ichimon 8 — Metro Police vs. Yamazaki Ichimon
2023
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Unification of Japan Gaiden: Yamazaki Ichimon 9 — Tales of the Unusual Yamazaki Family
2023
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Unification of Japan Gaiden: Nakajima Family — Shikoku Goldmine of Mayhem
2024
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Unification of Japan Gaiden: Yamazaki Ichimon 4: quick answers
What should I watch before Unification of Japan Gaiden: Yamazaki Ichimon 4?
Watch Unification of Japan Gaiden: Yamazaki Ichimon 2 (2020), Unification of Japan Gaiden: Tamura Yuto (2021), Unification of Japan Gaiden: Tamura Yuto 2 (2021), and Unification of Japan Gaiden: Yamazaki Ichimon 3 (2022) first, plus 2 earlier titles listed on this page.
What comes after Unification of Japan Gaiden: Yamazaki Ichimon 4?
Next in the series: Unification of Japan Gaiden: Yamazaki Ichimon 5 — Yokohama Deathmatch (2022), Unification of Japan Gaiden: Yamazaki Ichimon 6 — Kobe Blitzkrieg Tactics (2022), and Unification of Japan Gaiden: Yamazaki Ichimon 7 — The Little Romances of the Yamazaki (2023).
Is Unification of Japan Gaiden: Yamazaki Ichimon 4 worth watching?
Unification of Japan Gaiden: Yamazaki Ichimon 4 doesn’t have enough ratings for a verdict yet.
How long is Unification of Japan Gaiden: Yamazaki Ichimon 4?
Unification of Japan Gaiden: Yamazaki Ichimon 4 runs 86 minutes (1h 26m).
Does Unification of Japan Gaiden: Yamazaki Ichimon 4 have a post-credits scene?
None is listed for Unification of Japan Gaiden: Yamazaki Ichimon 4. Viewers tag these on TMDB, so a brand-new film may not be tagged yet.
Unification of Japan Gaiden: Yamazaki Ichimon 4 parents guide: is it suitable for kids?
No age rating is listed for Unification of Japan Gaiden: Yamazaki Ichimon 4 yet.
Which OTT platform is Unification of Japan Gaiden: Yamazaki Ichimon 4 on?
Unification of Japan Gaiden: Yamazaki Ichimon 4 isn’t streaming on any OTT platform in India yet; it released on 25 April 2022. (Checked 14 November 2026.)
What movies are like Unification of Japan Gaiden: Yamazaki Ichimon 4?
If you liked Unification of Japan Gaiden: Yamazaki Ichimon 4, try The City of Lost Souls, Yakuza Graveyard, Silverton Siege.
Who directed Unification of Japan Gaiden: Yamazaki Ichimon 4?
Unification of Japan Gaiden: Yamazaki Ichimon 4 (2022) was directed by Hiroyuki Tsuji and stars Yasukaze Motomiya, Yoshiyuki Yamaguchi, Yoshimi Tachi.