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Kodo-kai

criminal organization based in Nagoya, Japan

Layered newspapers, civic records and oral-history reels arranged as chronological evidence
History and societyInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJun 23, 2025
Entity authorityQ6425390
Source-derived summary

The Kodo-kai (弘道会 Kōdō-kai, Koh-doh-kai) is a yakuza criminal organization based in Nagoya, Japan. It is a secondary organization of the Sixth Yamaguchi-gumi, the largest known yakuza syndicate in Japan. With an estimated membership of 4,000, it is the second-largest Yamaguchi affiliate after the Yamaken-gumi, and operates in at least 18 prefectures.

The Kodo-kai is under close surveillance by the National Police Agency, as the NPA considers the organization to not be a traditional yakuza organization, but to be more like a mafia-type organization or terrorist organization. The Kodo-kai is notorious for its defiant attitude toward the official, and has dispensed with the yakuza's traditional policy of co-operating with the police.

The Kodo-kai has been one of the wealthiest clans in the Yamaguchi-gumi, with an immense working capital estimated at around $5 billion.

History

The Kodo-kai was founded in 1984 by Shinobu Tsukasa with 24 other members including Kiyoshi Takayama. At this time, Tsukasa became a formal member of the Fourth Yamaguchi-gumi. When the Fifth Yamaguchi-gumi started in May 1989, Tsukasa assumed the position of wakagashira-hosa (one of the third-ranking bosses).

Kiyoshi Takayama was promoted to the number-two boss (wakagashira) in 1989, and to the 2nd president (kaicho) in March 2005.

Editorial summary

Begin with the source’s own compact description: “Kodo-kai” is criminal organization based in Nagoya, Japan. The dossier treats that line as a proposition to test through Kodo-kai, criminal and organization, not as a finished interpretation.

Editorial reviewMost valuable as an event-and-institution map that identifies actors, dates and record creators for deeper historical inquiry. The current lead gives the account dated anchors—1984, 1989, 2005—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Kodo-kai, criminal and organization is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “criminal organization based in Nagoya, Japan” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Chronology, provenance and viewpoint should be read together before a broad social or political interpretation is accepted. The source revision retrieved here is dated Jun 23, 2025. The linked authority identifier is Q6425390. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1984, 1989 and 2005.

Critical limits

Institutional narratives can privilege the records that survived while minimizing voices that were never formally collected. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Compare institutional narratives with records created by participants and affected communities. Dates and formal titles are useful anchors, but not substitutes for context.

Best used for
  • Event chronology
  • Institutional context
  • Locating named record creators
Verify next

Contemporary correspondence, government or organizational records, oral histories and cited historical scholarship.

Three-step research path

  1. Establish the record: confirm the title “Kodo-kai”, its source revision and the description used here.
  2. Expand the search: follow Kodo-kai primary sources, Kodo-kai archive and Kodo-kai research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Kodo-kai”?
  2. What chronology connects this entry to wider political or social change?
  3. Who created the surviving record, and for what administrative purpose?
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Source & attribution

This entry incorporates text from Kodo-kai” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.