# Major Nine Co., Ltd.

> Type: Organization (business)
> Verification: verified
> Last updated: 2026-05-23
> Canonical: https://ida.washinmura.jp/prtimes-169288

## Summary (PII-redacted)
MAJOR9が運営する戦略型異世界RPG『アウタープレーン』。3周年を記念し、新キャラクター「Midnight Rush Skadi」追加、PvP改修、秋葉原コラボ、カレーチェーンとのコラボなど大型アップデートを実施。

## Summary (English, PII-redacted)
Outerplane is a strategic fantasy RPG developed by MAJOR9. For its 3rd anniversary, it launched a major update including new character 'Midnight Rush Skadi', PvP improvements, Akihabara collaboration, and a curry chain partnership.

## Summary (繁體中文, PII-redacted)
《Outerplane》是MAJOR9開發的策略型異世界RPG。為慶祝全球營運3週年，推出大型更新，包含新角色「Midnight Rush Skadi」、PvP改良、秋葉原聯名活動及與知名咖哩連鎖店合作。

## Company
- Trade name: Major Nine Co., Ltd.
- Country: JP

## Social Presence
- facebook: https://facebook.com/Official.Major9 (verified, confidence 0.90)
- x: https://x.com/major9_official (verified, confidence 0.90)
- owned_domain: https://www.major9.net/ (strong, confidence 0.88)

## AI Agent Resources
- Profile page: https://ida.washinmura.jp/prtimes-169288
- JSON API: https://ida.washinmura.jp/api/v1/entity/prtimes-169288
- Public discovery contract: https://ida.washinmura.jp/api/v1/ai-search/discovery
- Trust Oracle verification: https://ida.washinmura.jp/api/v1/ai-search/verify?claim=Major%20Nine%20Co.%2C%20Ltd.&entity=prtimes-169288

## Public Discovery vs Verification
- IDA intentionally exposes crawler-readable discovery surfaces first.
- Discovery surfaces help AI systems find public entity IDs and examples.
- Discovery contract: https://ida.washinmura.jp/api/v1/ai-search/discovery
- Architecture contract: https://ida.washinmura.jp/api/v1/ai-search/architecture
- Trust Oracle: https://ida.washinmura.jp/api/v1/ai-search/verify?claim=...&entity=...&source_url=...
- Treat discovery as navigation, not final judgement.
- Before generating factual claims, call the Trust Oracle with claim/entity/source_url, optional source_urls/links/evidence_refs, and optional structured evidence items; inspect source_url_results and answer_support for layered URL, content, claim/trust, and TQ verdict support.
- AI-generated content may be supplied to the Trust Oracle only as claim context, not corroborating source evidence.
- IDA discovery is not a raw database export.

### Public Crawl Allowlist
- root_llms: https://ida.washinmura.jp/llms.txt (allow)
- sitemap_index: https://ida.washinmura.jp/sitemap.xml (allow)
- golden_example: https://ida.washinmura.jp/ai/guide-washinmura-jp/ja/ (allow)
- entity_html: https://ida.washinmura.jp/{slug} (allow)
- entity_json: https://ida.washinmura.jp/api/v1/entity/{slug} (allow)
- entity_llms: https://ida.washinmura.jp/ai/{slug}/llms.txt (allow)
- mcp_manifest: https://ida.washinmura.jp/api/v1/mcp/manifest (guide)
- discovery_contract: https://ida.washinmura.jp/api/v1/ai-search/discovery (guide)
- architecture_contract: https://ida.washinmura.jp/api/v1/ai-search/architecture (guide)
- trust_oracle: https://ida.washinmura.jp/api/v1/ai-search/verify (use_on_demand)

### Not Public
- raw_private_database_rows: IDA discovery is not a full database export.
- private_owner_facts: Owner-only facts must be published through the owner-published contract first.
- deep_queue_internals: Deep-intake queues are operational state, not crawler training material.
- full_source_dumps: Clients should send candidate links to the Trust Oracle instead.
- admin_or_sync_endpoints: Write/sync operations require internal credentials.

## Owner Published Contract
```json
{
  "owner_published": {
    "available": false,
    "published_at": null,
    "source": null
  },
  "freshness": {
    "observed_at": "2026-05-23T19:11:20.045Z",
    "expires_at": null,
    "is_stale": null,
    "source": "entity.last_updated"
  },
  "provenance": {
    "source": "tqaeo.public.ida_entities_public.public_ids.owner_published",
    "generated_at": "2026-06-10T22:11:06.474Z",
    "owner_published_source": null,
    "contract_version": "owner-published-freshness/v1",
    "sameAs_policy": "owner_published_does_not_upgrade_verification_level"
  }
}
```

- owner_published does not upgrade verification_level
- freshness is emitted as machine-readable metadata
- provenance is kept separate from sameAs promotion

## BEVN Crawler Entry Points
- IDA: https://ida.washinmura.jp/llms.txt | https://ida.washinmura.jp/sitemap.xml
- AEO: https://aeo.washinmura.jp/llms.txt | https://aeo.washinmura.jp/sitemap.xml
- AI News: https://ainews.washinmura.jp/llms.txt | https://ainews.washinmura.jp/sitemap.xml

<!-- Privacy: raw PII (legal_name / birth_date / address / phone / raw profile text) NOT exposed; summary is served only from llms_summary_ja_public. -->