Enforcement record

Directive against 株式会社ＲＹＯＷＡ

株式会社ＲＹＯＷＡ (Construction Business Act)

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Construction Business ActSaitama PrefectureConfirmed entity match15 March 2024

Action type

Directive

Law

Construction Business Act

Authority

Saitama Prefecture

Action date

15 March 2024

Current page: Enforcement record

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Source verification

Public-source and preservation status

Publishing authority
Saitama Prefecture
Official source URL
Recorded by RegBase
Entity match
Confirmed against the current entity-resolution policy
Kiroku preservation
Archive not completed

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For developers: JSON integration details

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/api/v1/enforcements?corporate_number=9470001011718&limit=10
Open JSONSpecs

Action summary

Company
株式会社ＲＹＯＷＡJapanese original
Original: 株式会社ＲＹＯＷＡ
Corporate Number: 9470001011718
Entity match
Confirmed entity match100/100Machine checked
source_corporate_number_nta_current_name
国税庁法人番号データとの独立照合で対象法人を確認しました（source_corporate_number_nta_current_name）。
Governing law
Construction Business Act
建設業法
Action type
Directive
指示
Action date
15 March 2024
Issuing authority
Saitama Prefecture
埼玉県
Industry context
建設業者

Violation

Machine-translated summary — verify against original

RYOWA Corporation (formerly MIYABI Corporation) and a former employee were involved in concealing income by recording fictitious subcontracting costs over three fiscal years from November 1, 2017, to October 31, 2020. They filed false corporate tax returns, evading about 168 million yen in taxes. On October 27, 2023, they were convicted of violations of the Corporate Tax Act, Local Corporate Tax Act, Consumption Tax Act, and Local Tax Act. RYOWA was sentenced to a fine of 42 million yen, and the former employee received a prison sentence of two years, with a three-year suspension. The case is classified under Article 28, Paragraph 1, Item 3 of the Construction Business Act. The enforcement action was issued by Saitama Prefecture on March 15, 2024, as a directive to prevent recurrence, requiring measures such as internal awareness, compliance with laws, and ongoing training.

Show original Japanese text

株式会社ＲＹＯＷＡ（旧社名：株式会社ＭＩＹＡＢＩ）と元社員は、平成29年11月1日から令和2年10月31日までの3事業年度にわたり、架空外注加工費を計上するなどの方法により、所得を秘匿して、虚偽の法人税等の確定申告をしたことにより、約1億6,800万円を脱税したとして、令和5年10月27日、法人税法、地方法人税法、消費税及び地方税法違反により、株式会社ＲＹＯＷＡ（旧社名：株式会社ＭＩＹＡＢＩ）は4,200万円の罰金刑と、元社員については懲役2年（執行猶予3年）の刑が言い渡され、それぞれ刑が確定した。 このことは、建設業法第28条第１項第３号に該当する

Business location and permit details

Business location address
埼玉県川口市坂下町3丁目6番12号
Representative
藤原 理栄
Permit / registration number
埼玉県知事（般－3）第74265号
Permitted business types
Civil engineering works, Scaffolding, earthwork, and concrete works, Stone works, Steel structure works, Paving works, Dredging works, Water facilities works, Demolition works
Legal articles
建設業法第28条第1項
Cause of action
株式会社ＲＹＯＷＡ（旧社名：株式会社ＭＩＹＡＢＩ）と元社員は、平成29年11月1日から令和2年10月31日までの3事業年度にわたり、架空外注加工費を計上するなどの方法により、所得を秘匿して、虚偽の法人税等の確定申告をしたことにより、約1億6,800万円を脱税したとして、令和5年10月27日、法人税法、地方法人税法、消費税及び地方税法違反により、株式会社ＲＹＯＷＡ（旧社名：株式会社ＭＩＹＡＢＩ）は4,200万円の罰金刑と、元社員については懲役2年（執行猶予3年）の刑が言い渡され、それぞれ刑が確定した。 このことは、建設業法第28条第１項第３号に該当する
Overview page
https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=122

These fields are extracted from the original Japanese disclosure or linked overview pages when available.

Compliance context

Medium

A regulator issued a directive requiring specified action.

Construction business law covering licensing, contractor obligations, and public-interest rules for construction work.

Verify the required action and whether the company has disclosed remediation or completion.

This context is an operational aid for review workflows, not a credit opinion or legal conclusion.

Open original sources and verification detailsOfficial URL, direct PDF, and Kiroku archive
Original Saitama Prefecture source (Japanese)
Extracted at
2026-07-17T11:56:25.97+00:00
Evidence checked
2026-07-17T08:47:54.169+00:00
Archive captured
Not archived
Show audit JSON
{
  "record": {
    "id": "c2e2a88f-8377-4af6-b4bb-0039e2d6ade2",
    "url": "https://regbase.jp/en/enforcement/kensetsu-gyoho-ryowa-20240315",
    "company_name_original": "株式会社ＲＹＯＷＡ",
    "company_name_registry": "株式会社ＲＹＯＷＡ",
    "corporate_number": "9470001011718",
    "law": {
      "ja": "建設業法",
      "en": "Construction Business Act"
    },
    "action_type": {
      "ja": "指示",
      "en": "Directive"
    },
    "authority": {
      "ja": "埼玉県",
      "en": "Saitama Prefecture"
    }
  },
  "entity_match": {
    "status": "confirmed",
    "confidence": 100,
    "method": "source_corporate_number_nta_current_name",
    "method_label": "source_corporate_number_nta_current_name",
    "notes": "国税庁法人番号データとの独立照合で対象法人を確認しました（source_corporate_number_nta_current_name）。"
  },
  "review": {
    "status": "machine_reviewed",
    "label": "Machine checked"
  },
  "compliance_context": {
    "severity": "Medium",
    "actionMeaning": "A regulator issued a directive requiring specified action.",
    "practicalNote": "Verify the required action and whether the company has disclosed remediation or completion.",
    "lawContext": "Construction business law covering licensing, contractor obligations, and public-interest rules for construction work."
  },
  "evidence": {
    "recordUrl": "https://regbase.jp/en/enforcement/kensetsu-gyoho-ryowa-20240315",
    "officialSourceUrl": "https://www.mlit.go.jp/nega-inf/cgi-bin/search.cgi?jigyoubunya=kensetugyousya&EID=search&no=122",
    "officialDocumentUrl": null,
    "archiveUrl": null,
    "archivedSourceUrl": null,
    "archiveCapturedAt": null,
    "extractedAt": "2026-07-17T11:56:25.97+00:00",
    "translatedAt": "2026-07-18T16:30:26.164+00:00",
    "evidenceCheckedAt": "2026-07-17T08:47:54.169+00:00",
    "generatedAt": "2026-09-08T19:11:06.415Z"
  },
  "limitations": [
    "RegBase aggregates public Japanese government disclosures and does not provide a credit opinion.",
    "English summaries are provided for reference. The original Japanese source is authoritative.",
    "Possible or unresolved entity matches should be manually verified before use in a decision."
  ]
}

The original Japanese disclosure is the authoritative record. Use possible or unresolved matches only as leads for manual review.

Language

日本語版を見る (Japanese)

Company info

English name
株式会社ＲＹＯＷＡ Japanese original
Japanese name
株式会社ＲＹＯＷＡ
Corporate Number
9470001011718
Registered address
埼玉県川口市赤井１丁目２７番１９号
See company profile →

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About this recordAggregated and translated from public Japanese government disclosures. The English text is for reference only — authoritative content is the linked Japanese source.