Kakuji Inagawa

Kakuji Inagawa was the founding figure behind the criminal organization that developed into the Inagawa-kai, one of Japan’s major yakuza syndicates. His importance is institutional: the group that carried his name became a durable postwar organization with a large presence in the Kanto and Tokai regions and later one of the principal syndicates tracked by Japanese police and foreign sanctions authorities.

Building the organization

The organization associated with Inagawa grew in the postwar period as Japanese organized crime reorganized around large federated syndicates. Over time the group operated under several names before the Inagawa-kai name became established. Its reach expanded beyond a single local gang structure and the organization became one of the major boryokudan groups in Japan.

The Inagawa-kai in the larger yakuza system

Japan’s National Police Agency has long treated the Inagawa-kai as one of the major designated boryokudan organizations. U.S. Treasury sanctions material likewise identified it as one of the largest yakuza syndicates and described later leaders as playing key roles in policy and dispute settlement.

That later official record is useful for understanding Inagawa’s historical importance. A founder does not need to be personally linked to every later crime or business activity attributed to an organization. The durable fact is that the syndicate he helped establish survived him, expanded and became a major institution in Japanese organized crime.

Leadership succession

Why this profile matters

Inagawa is a high-value graph node because he connects postwar yakuza history with the modern Inagawa-kai. His profile should not be padded with unverified anecdotes. The stronger editorial approach is to explain what he founded, where the organization fit into postwar Japan, how later leadership inherited that structure, and how the modern syndicate came to be treated by the National Police Agency and U.S. Treasury as a major organized-crime group.

Related entities

The central internal links are Inagawa-kai, Susumu Ishii, later Inagawa leadership and the broader postwar-yakuza expansion timeline. These are more meaningful than generic links to unrelated Japanese crime figures.

Sources

– Japan National Police Agency white papers on designated boryokudan and major syndicates. – U.S. Department of the Treasury sanctions material on the Inagawa-kai and its later leadership.

Documented network

Inagawa kai (organization): Kakuji Inagawa is historically documented as affiliated with or leading Inagawa-kai.

Timeline and case connections

The Master record keeps events separate from general biography so arrests, convictions, organizational changes, killings and other milestones can be updated without rewriting unrelated parts of the page.

Postwar period — Postwar formation of the Inagawa organization. Inagawa built the organizational lineage that later became known as the Inagawa-kai.

Later 20th century — Inagawa-kai becomes a major national syndicate. The organization developed into one of Japan's major boryokudan syndicates, with later leaders succeeding the founder's institutional lineage.

Status and record

The current structured life-status field is unknown. This administrative field should change only when a reliable current source supports an update.

Evidence and editorial boundaries

The profile is designed as a historical research node rather than a collection of unsourced anecdotes. Where evidence is strongest on an organization, prosecution or event rather than private biographical details, the page stays focused on that documented record.

Source record

The current Master package attaches the following sources to this profile: – White Paper on Police 2017 — Situation of Organized Crime Groups — National Police Agency of Japan, Tier 1. – Yakuza: Japan's Criminal Underworld — University of California Press, Tier 2. – The Japanese Mafia: Yakuza, Law, and the State — Oxford University Press, Tier 2. – Japan National Police Agency — White Paper 2010 — Tier 2. – U.S. Treasury — Targets Leading Figures of Transnational Criminal Organizations — Tier 2.

Source entries establish the claims for which they are cited; their presence does not mean every source supports every sentence. Structured references are retained so later audits can trace claims back to evidence.