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Hitotsubashi Group

publishing group in Japan

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 14, 2026
Entity authorityQ97352307
Source-derived summary

The Hitotsubashi Group (一ツ橋グループ, Hitotsubashi Gurūpu) is a Japanese family-owned publishing vertical keiretsu in Hitotsubashi, Chiyoda, Tokyo. It is composed of Shogakukan, Shueisha, Hakusensha and related publishing companies. The name of the group is derived from the location of its major members' headquarters in the Hitotsubashi area of Tokyo. The group companies are mostly run by the Ōga family, whose influence in the companies is still strong today.

It was started when Shogakukan, which was focused mainly on educational magazines and other related publishing at the time, decided to spin off a company (Shueisha) to produce entertainment (especially manga) magazines. Eventually, Shogakukan moved into the entertainment business as well, and became a rival of Shueisha, and the group was formed to help each one grow. The headquarters buildings for Shogakukan and Shueisha are right next to each other.

Associated companies

Hakusensha

Hero's Inc (shareholder via Shogakukan Creative)

President

Remow

Shodensha

Shogaku Tosho

Shogakukan

Shogakukan-Shueisha Productions (ShoPro)

Shorinsha

Shotsu

Showa Tosho

Shueisha

Viz Media

Viz Productions

VME PLB SAS

References

Wischenbart, Rudiger (June 21, 2010). "The Top Seven Japanese Publishing Companies from PW's Global Ranking 2009". Publishers Weekly.

Editorial summary

Begin with the source’s own compact description: “Hitotsubashi Group” is publishing group in Japan. The dossier treats that line as a proposition to test through Hitotsubashi, Group and publishing, not as a finished interpretation.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—2010, 2009—that can be checked directly. The selected authority fields contribute no independent date. For this dossier, Hitotsubashi, Group and publishing is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “publishing group in 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

The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 14, 2026. The linked authority identifier is Q97352307. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2010 and 2009.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Hitotsubashi Group”, its source revision and the description used here.
  2. Expand the search: follow Hitotsubashi Group primary sources, Hitotsubashi Group archive and Hitotsubashi 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 “Hitotsubashi Group”?
  2. Which institution is responsible for the underlying evidence?
  3. Which cited source is closest to the event, object or claim?
Subject index

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Source & attribution

This entry incorporates text from Hitotsubashi Group” 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.