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9nine

Japanese girl group

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionOct 19, 2025
Entity authorityQ184294 ↗
Source-derived summary

9nine (pronounced simply "nine") is a Japanese idol group formed of Uki Satake, Sayaka Nishiwaki, and Hirona Murata. Formed in 2005, they are managed by LesPros Entertainment and signed to SME Records.

History

2005-2010: Origin and debut

In September 2005, 9nine was formed of Sayaka Nishiwaki, Uki Satake, Azusa Matsuzawa, Miwako Wagatsuma, Rubi Katō, Marie Ashida, Mai Yoshida, Midori Yamaoka, and Moe Miura. They released their debut single "Sweet Snow" in 2006.

2010-2019: Restart and popularity

The band changed its music style from typical idol pop to electropop. The group's 2012 single "Shōjo Traveller" became its first to reach the top 10 on the Oricon Weekly Singles Chart. The self-titled album 9nine, that soon followed, debuted at number 8. On 27 February 2019, it was announced on their official website that the group would be pausing all activities and going on an indefinite hiatus. On 20 May 2019, Kanae Yoshii withdrew from the group and announced retirement from the entertainment industry, leaving only 3 members left in the lineup. On 21 July 2022, Sayaka Nishiwaki announced her withdrawal from the group and from LesPros Entertainment as she transferred to a new agency, but she revealed that she have intention to return to the group in the future.

Editorial summary

Begin with the source’s own compact description: “9nine” is japanese girl group. The dossier treats that line as a proposition to test through 9nine, Japanese and girl, not as a finished interpretation.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—2005, 2010, 2006, 2019—that can be checked directly. The linked authority record independently contributes the date 2005-01-01. For this dossier, 9nine, Japanese and girl is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “japanese girl group” 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

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Oct 19, 2025. The linked authority identifier is Q184294. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2005, 2010, 2006 and 2019.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. 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

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.

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  • Search vocabulary
  • Locating named sources
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Three-step research path

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  2. Expand the search: follow 9nine primary sources, 9nine archive and 9nine 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

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Source & attribution

This entry incorporates text from “9nine” 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.