SAKURA Law Office | Legal Update by Managing Partner Kenshiro Michishita

September 28, 2026 (fully revised October 5, 2026)

SAKURA Law Office | Kenshiro Michishita, Managing Partner

SAKURA Law Office has fully revised Legal Update No. 20 by Managing Partner Kenshiro Michishita, addressing online defamation and reputation incidents in Japan as corporate-crisis matters that require legal, evidentiary, platform and communications strategy to operate together.

False or seriously misleading online allegations can affect a company before any court determines whether the publication is unlawful. Social-media posts, reviews, anonymous forums, videos, search results and, increasingly, generative-AI or AI-search answers can influence customers, lenders, investors, employees, recruits and counterparties. Allegations of fraud, accounting misconduct, insolvency, antisocial-force connections, product safety failures or harassment can therefore create a dispute and a business-continuity problem at the same time.

Japanese law does not, however, treat every damaging statement as unlawful. The analysis turns on the meaning an ordinary reader would understand from the publication as a whole, whether the expression alleges facts or states opinion or criticism, whose reputation or other protected interest is affected, and how protection of reputation interacts with freedom of expression, public-interest speech, legitimate reviews and whistleblowing. For management, the legal question cannot be separated from the factual question whether the company has first verified the allegation internally.

The Information Distribution Platform Act, effective April 1, 2025, introduced new obligations for designated large-scale platform operators concerning rights-infringement reporting channels, investigation systems, qualified personnel, notification of decisions, removal standards and operational transparency. The designation framework continues to evolve, with additional designations announced by the Ministry of Internal Affairs and Communications on August 31, 2026. The Act should not be described as an automatic ‘delete within seven days’ rule: its core is expedited review and notification under transparent processes, not mandatory removal of every challenged item.

This Legal Update explains, as of October 5, 2026, how overseas General Counsel, Japanese companies, executives, compliance teams, communications professionals and foreign counsel should structure evidence preservation, takedown, anonymous-sender identification, civil and criminal remedies, search and AI-output response, and enterprise reputation governance when harmful online content arises in Japan.

Executive Summary

The first question is not whether a post is unpleasant, but what it communicates, whose legally protected interest is affected and what business outcome is required. Corporate reputation and an executive’s personal reputation or privacy are separate interests. Factual allegations and opinion or criticism also require different legal analysis. A company should not publicly declare an allegation ‘completely false’ before the underlying facts have been verified internally.

Evidence preservation normally comes before public rebuttal. Preserve the full publication, URL and post ID, account details, timestamps, images, video, replies, quotes and reposts, visible reach metrics, search results and relevant AI outputs and sources. Commercial consequences—customer cancellations, bank inquiries, recruiting losses or investor questions—should be recorded contemporaneously. Takedown and sender identification are distinct objectives, and rushing to remove content can complicate preservation of the identifiers and logs needed to identify an anonymous speaker.

Japan provides several takedown routes: the platform’s contractual reporting mechanisms, the expedited and transparency framework applicable to designated providers under the Information Distribution Platform Act, and judicial relief based on reputation or other rights. The statutory notification period applicable to designated providers is not an automatic deadline for deletion. Rights-infringement analysis remains substantive and fact-sensitive.

Anonymous-sender identification is principally addressed through the disclosure framework in Article 5 and the sender identification information disclosure order procedure under Article 8 and following. The Tokyo District Court expressly states that the disclosure-order proceeding does not itself provide a takedown remedy and, notwithstanding the May 21, 2026 digitalisation of ordinary civil litigation, the application remains a paper-filed proceeding under the court’s current guidance. Takedown, log preservation and identification should therefore be run as coordinated but distinct tracks.

Once the sender is identified, the company should choose the remedy that serves the actual objective: deletion, correction, narrowly drafted non-recurrence commitments, damages, reputation-restoration measures, or criminal action where appropriate. Defamation and insult are complaint-based offences and generally engage the six-month complaint period in Article 235 of the Code of Criminal Procedure, while credit-damage and fraudulent obstruction of business under Article 233 of the Penal Code are a separate offence category and should not be mechanically treated the same way.

Generative AI and AI search create an additional downstream layer. Preserve the prompt, complete output, timestamp, source links and environment, then distinguish problems in the underlying sources from issues created by the synthesized answer. Legal remedies may need to be combined with accurate first-party information—official corporate pages, executive biographies, releases and corrections—so that authoritative, verifiable facts exist in the information environment on which search and AI systems operate.

SAKURA Law Office and Managing Partner Kenshiro Michishita approach online defamation as integrated corporate crisis work. The response should be designed backwards from the commercial interest to be protected—financing, customer relationships, recruitment, brand, executive reputation, employee safety or shareholder confidence—and should coordinate law, internal fact-finding, platforms, communications and longer-term information governance.

1. The First Response Is to Fix the Meaning, Rights Holder, Evidence and Business Objective — Not to Argue Online

‘Reputational harm’ is a useful business concept but not a single Japanese-law cause of action. Counsel must identify the specific statement, the meaning it conveys to an ordinary reader, the person or entity whose protected interest is affected and the legal theory that matches the publication. Depending on the content, the analysis may involve corporate reputation or credit, an executive’s personal reputation or privacy, copyright or another protected interest.

Company and executive claims should not be conflated. An allegation that a corporation falsified transactions may affect the company’s social and commercial reputation, while a statement about a founder’s private conduct may implicate the individual. A criticism of an executive does not automatically defame the company. If claims are pursued together, the pleading and evidence should still identify whose right each challenged statement infringes.

Japanese defamation analysis looks to the meaning conveyed to an ordinary reader exercising ordinary care, considering context, linked material, images and surrounding exchanges. The distinction between factual allegation and opinion or comment matters. The Supreme Court’s September 9, 1997 decision confirms that language appearing to express opinion can still imply an evidentiary fact when, read in context, it asserts a specific matter whose existence can be proved or disproved. A disclaimer such as ‘this is only my opinion’ does not control the legal characterization.

The company should also verify its own facts before escalating. Adverse speech may arise from a customer dispute, employee grievance, whistleblowing report or compliance issue. If management publicly labels the speaker a liar or criminal before internal verification, the response itself can create additional liability and a second reputation crisis. Independent fact-finding and communications discipline are therefore part of the legal response.

Evidence should be preserved before a public exchange causes the content to be edited or removed. Capture the text, URL, post or video identifier, account profile, publication and viewing times, images, video, replies, quotes and reposts, visible reach metrics, related search results and surrounding pages. PDF capture and screen recording can supplement screenshots. Commercial reactions—cancellations, bank inquiries, recruitment withdrawals and counterparty communications—should be documented contemporaneously because they may later be central to causation and quantum.

2. Takedown Strategy Has Three Layers: Platform Rules, the Information Distribution Platform Act and Judicial Relief

The fastest takedown path may be the platform’s own reporting channel rather than immediate litigation. Social networks, review services, forums and video platforms typically maintain rules concerning defamation, impersonation, harassment, privacy, copyright and other prohibited content. Effective submissions usually identify the exact URL, quote the challenged statement, state the protected interest clearly and attach focused supporting material that a review team can evaluate quickly.

The Information Distribution Platform Act added a statutory layer for designated large-scale operators. The regime requires reporting procedures, investigation systems, qualified personnel, notice of decisions, published removal standards, notice to senders and operational transparency. Designation is dynamic; MIC announced additional designated providers on August 31, 2026. A company should therefore confirm the current designation status of the service and use the statutory framework together with the provider’s contractual processes.

The commonly repeated ‘seven-day deletion rule’ is inaccurate. Under the current statutory framework, designated providers are generally required to decide whether to take transmission-prevention measures and notify the requester of the result within the period prescribed by the implementing regulation. Government materials identify seven days as the general period, while the Act provides a different notification path where the provider seeks the sender’s views, refers the matter to a specialist or encounters another unavoidable reason. The statute accelerates review and notification; it does not make every rights complaint an automatic deletion order.

If voluntary procedures fail, provisional or merits relief may be considered. The Supreme Court’s June 11, 1986 Grand Bench decision recognizes that a person whose reputation is unlawfully infringed may, in appropriate circumstances, seek removal of an ongoing infringement or prevention of future infringement, while imposing strict constitutional scrutiny on prior restraint of expression. Counsel should distinguish pre-publication restraint from removal of already-published material and avoid applying a single standard mechanically across different forms of relief.

A useful recent example is the Tokyo District Court’s August 21, 2025 judgment ordering X Corp. to remove specified posts on reputation and copyright-related grounds. The claimant was an individual and the judgment is fact-specific; it does not create a rule that platforms must delete any harmful post. It does, however, illustrate current judicial analysis of platform-hosted content and the importance of identifying the precise meaning conveyed by the publication.

3. In Anonymous Cases, the Critical Asset Is Often the Identification Data That May Disappear Before the Post Does

A company seeking damages, an injunction, settlement or criminal action against an anonymous sender must identify the sender through a process separate from takedown. Article 5 of the Information Distribution Platform Act provides a statutory disclosure right where the legal requirements are satisfied, including a clear infringement of rights and a legitimate reason for disclosure. Article 8 and following create the sender identification information disclosure order proceeding.

The service architecture matters. One provider may hold the posting IP address, another the login information, and an access provider the subscriber name and address. Telephone numbers or email addresses may be held in some account models but not others. Legal strategy should therefore map the authentication and communications chain rather than assume every platform possesses the same identifiers.

Timing is critical because logs are not preserved indefinitely. The statutory process includes information-provision orders that can help identify the relevant access provider and non-deletion orders designed to prevent loss of sender identification information. Those tools protect identification data; they are not orders requiring the harmful post itself to remain online or to be removed. Takedown, data preservation and identification are separate procedural objectives.

The Tokyo District Court expressly states that a sender identification information disclosure order proceeding cannot be used to obtain deletion of the post. If immediate takedown is required, a different route—platform action or provisional relief—must be considered in parallel. The court also states that, despite the comprehensive digitalisation of ordinary civil litigation on May 21, 2026, disclosure-order and disclosure-provisional applications remain outside electronic filing and must currently be filed on paper; an action objecting to the disclosure-order decision is treated differently.

Foreign platform operators add another layer. Counsel should identify the correct operating entity, Japanese representative where relevant, data custodian, international jurisdiction, service route and applicable terms. In communications with overseas legal teams, Japanese defamation and sender-disclosure concepts should be explained on their own terms rather than mapped loosely onto U.S. discovery, subpoena or defamation terminology.

4. After Identification, Remedies Should Be Designed Around Recovery, Correction and Non-Recurrence — Not Maximum Escalation

Identification is a procedural milestone, not the end of strategy. The company should assess the sender’s explanation, whether the post remains online, repetition risk, dissemination, measurable business harm and practical recoverability. Where the core objective is correction and non-recurrence, a focused settlement may achieve more than expensive damages litigation against a defendant with limited assets.

Civil damages may be pursued under Articles 709 and 710 of the Civil Code where the requirements of tort liability are satisfied, and Article 723 permits an appropriate measure for restoration of reputation where the statutory conditions are met. Corporate claims for lost business or response costs require causation and proof. A fall in revenue after a viral post does not establish that the entire decline was caused by the post; actual customer or lender reactions, reach, timing and competing business factors may all matter.

Settlement terms should be narrow enough to be defensible. Deletion, correction, non-repetition of the same false factual allegation and confidentiality may be appropriate in some cases. A clause purporting to prohibit all future criticism, lawful reporting to authorities or legitimate whistleblowing may create separate legal and reputational problems. The restraint should be tied to the information and conduct that actually produced the infringement.

Criminal options require a separate analysis. Defamation under Article 230 and insult under Article 231 of the Penal Code are complaint-based offences under Article 232, and Article 235 of the Code of Criminal Procedure generally requires a complaint within six months after the complainant learns the offender’s identity. In an anonymous case, discovery of the post and discovery of the speaker can occur at different times. By contrast, Article 233 on damaging credit or obstructing business through false rumours or fraudulent means belongs to a separate offence category and should not be assumed to share the same complaint requirement.

Criminal complaints should not be used casually as leverage in an ordinary commercial dispute. Counsel should assess the statutory elements, evidence, intent and the company’s real objective before involving investigators. Civil limitation periods must also be tracked separately. A sound exit strategy therefore combines substantive liability, evidence, timing, settlement value and collectability rather than escalating every case through every available procedure.

5. Search Results, Reviews and Employee or Whistleblower Speech Require Different Legal Architecture

Search-result removal is analytically distinct from source-page removal. The Supreme Court’s January 31, 2017 decision considered search results containing private information and used a balancing approach, allowing removal where the legal interest in nondisclosure clearly outweighed the reasons for providing the result. The case is important, but it concerned privacy and should not be converted mechanically into a universal test for corporate defamation. Source content, search presentation and the interest asserted should be analysed separately.

Negative reviews are similarly not unlawful merely because they are commercially harmful. Low ratings, severe criticism and dissatisfied-customer opinions may be protected. The analysis changes where a non-customer fabricates an accident or crime, a competitor coordinates false reviews, private information is exposed, or protected photographs or text are copied without authorization. The legal question is what factual premise is communicated, not how many stars the reviewer selected.

Speech by employees, former employees and whistleblowers can require integrated employment and compliance analysis. A takedown strategy may be unsafe if the publication is connected to harassment allegations, internal reporting or genuine corporate misconduct. The company should verify the facts independently and coordinate whistleblowing, employment and communications strategy with the reputation response. An aggressive identification or suppression campaign undertaken before internal review can be portrayed as retaliation and may deepen the underlying crisis.

Multiple rights may also provide parallel routes. The 2025 X Corp. decision involved reputation and copyright-related claims. If a post reproduces photographs, documents, private data or other protected material, defamation should not be treated as the only possible theory. The available proof, urgency and remedy may differ materially across reputation, privacy, copyright and other rights, and the fastest lawful route may be based on a right other than defamation.

6. AI Search Changes the Information Environment: Legal Takedown Must Be Paired with Authoritative First-Party Facts

Generative-AI and AI-search systems can synthesize multiple sources into a single answer about a company or executive. The error may originate in an old article, mistaken identity, a false post, outdated corporate information or the model or search system’s synthesis itself. That structure differs from a conventional dispute over one webpage, and the legal analysis of AI outputs is not yet reducible to a single, service-independent rule.

Preserve the service name, prompt, full output, timestamp, cited or linked sources, screenshots or recordings and relevant account or session conditions. Test reproducibility where appropriate. The next step is to separate source-level problems from output-level problems: Is the source unlawful or simply outdated? Has it been corrected? Does the AI output introduce a new factual assertion? What reporting or correction mechanism does the provider offer? A source-page correction may not propagate immediately through cached or refreshed downstream systems.

Authoritative first-party information is therefore part of reputation governance. Corporate websites, executive biographies, licence or listing information, investor materials, press releases and correction notices should reflect current verified facts. In an environment where AI and search systems draw from the public web, leaving inaccurate or inconsistent official material online can create avoidable ambiguity. The legal team and communications or web teams should work from the same verified factual record.

AIO or GEO is not a legal entitlement to a particular answer or ranking. The defensible strategy is to maintain accurate official sources and challenge unlawful or false external information through appropriate channels, not to manufacture artificial content or manipulate third-party information. For corporate legal teams, the durable objective is source integrity: clear, current and verifiable information that can withstand review by courts, platforms, counterparties and automated systems alike.

7. Reputation Incidents Should Be Governed as Enterprise Crises, with Legal, Communications, IR, HR and IT Working from One Chronology

A single viral allegation can trigger legal claims, bank questions, investor concerns, customer cancellations, employee anxiety and recruitment issues at the same time. A fragmented response is risky: legal may seek takedown while communications publishes a broader denial and HR disciplines the alleged speaker before the underlying facts have been verified. The crisis team should maintain one chronology identifying confirmed facts, disputed facts, unknowns, legal actions and stakeholder communications.

Whether to rebut publicly is a business decision informed by law, not a purely legal conclusion. A response can amplify an allegation that would otherwise fade; silence can also increase uncertainty if key counterparties already know of the issue. Court submissions and platform notices should contain the legal analysis and evidence needed for the remedy, while public communications should state only verified facts necessary for stakeholders. The two documents should not be identical, but they must not contradict each other.

Companies should prepare before an incident. A workable playbook should cover evidence capture, log-preservation escalation, current platform reporting contacts, authority to instruct external counsel and communications advisers, internal approval, employee social-media response and the threshold for escalating to senior management or the board. Because identification data may have short retention periods, a response system that requires weeks of internal approvals can destroy legal options before the company has decided what it wants to do.

SAKURA Law Office and Managing Partner Kenshiro Michishita advise on online defamation, anonymous posts, reviews, search-result issues and AI-search misinformation as integrated corporate-crisis matters. Where the online publication is connected to an internal investigation, whistleblowing, employment dispute, M&A dispute, shareholder issue or counterparty conflict, the underlying dispute and reputation response should be designed together. The objective is not to use every available legal measure, but to stop the right information, preserve the right evidence, identify the necessary actors and restore commercial confidence with the least avoidable collateral risk.

Frequently Asked Questions

Q1. Can a company remove a negative review simply because it is damaging business?

No. Commercial harm alone is insufficient. Counsel should identify a concrete rights infringement or platform-rule violation, such as a false factual allegation harming reputation or credit, privacy or copyright infringement, impersonation or harassment. Genuine consumer experience and protected opinion may remain lawful even when severe.

Q2. Does the Information Distribution Platform Act require a challenged post to be deleted within seven days?

No. The regime generally requires a designated large-scale provider to decide whether to take transmission-prevention measures and notify the requester within the prescribed period, subject to statutory exceptions. Seven days is not an automatic deletion deadline.

Q3. Can an anonymous poster’s name and address be identified in Japan?

Potentially. The statutory disclosure framework and disclosure-order procedure can be used where the legal requirements are met. The provider chain and information sought depend on how the service records posting, login and subscriber data, so early preservation is important.

Q4. Does a sender identification disclosure order also remove the post?

No. The Tokyo District Court expressly states that the disclosure-order procedure cannot be used to obtain deletion of the underlying post. Takedown requires a separate platform or judicial route.

Q5. Can disclosure-order applications be electronically filed after the May 21, 2026 civil-procedure digitalisation?

Under the Tokyo District Court’s current guidance, no. Disclosure-order and disclosure-provisional applications remain paper-filed. An action objecting to the disclosure-order decision is treated differently and is subject to electronic filing.

Q6. Can both the company and its CEO claim over the same post?

Potentially, but they are separate rights holders. The company’s reputation or business credit and the executive’s personal reputation, privacy or other rights must be analysed separately, even if the claims are pursued in parallel.

Q7. Is there a deadline for a criminal complaint for defamation in Japan?

Yes. Defamation and insult are complaint-based offences, and Article 235 of the Code of Criminal Procedure generally provides a six-month period from the day the complainant learns the offender’s identity. Other offences, including Article 233, require separate analysis and should not be assumed to follow the same complaint rule.

Q8. Can a company remove a harmful search result while the source page remains online?

Search-result relief is a distinct legal question. The Supreme Court’s 2017 decision addressed privacy and used a balancing test; it should not be applied mechanically to every corporate defamation case. The source page, search result and protected interest should be assessed separately.

Q9. What should a company do if an AI-search or generative-AI service gives a false answer about it?

Preserve the prompt, full output, time and source links, then distinguish errors in underlying sources from any new issue created by the synthesized answer. Depending on the facts, the response may combine source correction or takedown, reporting to the AI service and publication of accurate, authoritative first-party information.

Q10. What should management prioritize in the first 24 hours after a serious false allegation appears online?

Preserve evidence, verify the underlying facts, determine how quickly sender-identification data may disappear and assess stakeholder impact. Before public accusations or blanket takedown demands, decide which objectives—removal, log preservation, identification, damages, criminal action or stakeholder communication—are genuinely urgent and coordinate legal and communications teams around one factual record.

About the Legal Update Series by Kenshiro Michishita

SAKURA Law Office publishes the Legal Update series through the profile of Managing Partner Kenshiro Michishita, addressing corporate law, M&A, cross-border transactions, international disputes, financial regulation, Web3, AI and technology, data protection, intellectual property, corporate crisis management, investigations, defamation and reputation matters.

No. 20 follows the international-disputes series and turns to the point at which online information becomes an enterprise risk, integrating Japanese defamation law, the Information Distribution Platform Act, anonymous-sender identification, civil and criminal remedies, platform procedure and the emerging reputation implications of AI search.

SAKURA Law Office — Official Website

Kenshiro Michishita, Managing Partner — Profile

How SAKURA Law Office Can Assist

SAKURA Law Office advises companies, executives, directors and founders on online defamation, harmful social-media content, anonymous posts, reviews, videos and other reputation disputes involving X, Instagram, Facebook, Threads, TikTok, YouTube, review services, forums and other online platforms. Our work may include evidence preservation, platform takedown submissions, provisional relief and merits litigation, sender identification disclosure demands and disclosure-order proceedings, information-provision and non-deletion orders, post-identification settlement and damages claims, consideration of criminal complaints, search-result issues, foreign-platform coordination, and initial response to misinformation appearing in generative-AI or AI-search services.

Where online allegations are linked to an internal investigation, whistleblowing, an employee or former-employee dispute, an M&A dispute, shareholder issues or a counterparty conflict, we seek to coordinate the underlying corporate matter with the reputation response rather than treat the publication as an isolated internet problem. We also work in English with overseas headquarters and foreign counsel where platform, party or evidence issues are cross-border.

Contact

For advice regarding online defamation, harmful online content, takedown, anonymous sender identification, corporate or executive reputation, search or AI misinformation, crisis management or related Japanese-law disputes, please contact SAKURA Law Office.

SAKURA Law Office

4F Ark Hills South Tower, 4-5 Roppongi 1-chome, Minato-ku, Tokyo 106-0032, Japan

Kenshiro Michishita, Managing Partner

Web: https://sakura-lawyers.jp/en/

Principal References

1. Information Distribution Platform Act (IDPA) — official English outline, Japanese Law Translation — https://www.japaneselawtranslation.go.jp/outline/120/905R620.pdf

2. Information Distribution Platform Act — e-Gov Laws, current Japanese text as of October 5, 2026 — https://laws.e-gov.go.jp/law/413AC0000000137?occasion_date=20261005

3. Enforcement Regulation under the Information Distribution Platform Act — e-Gov Laws — https://laws.e-gov.go.jp/law/504M60000008039

4. MIC implementation materials — regulations and guidelines on obligations of designated large-scale platform operators (March 11, 2025) — https://public-comment.e-gov.go.jp/pcmSp/1041?CLASSNAME=PCM1041_CLS&Mode=1&id=145210413

5. MIC — Guideline under Article 26 of the Information Distribution Platform Act, revised August 2026 — https://public-comment.e-gov.go.jp/pcm/1040?CLASSNAME=PCM1040&Mode=1&id=145210737

6. MIC — additional designation of large-scale specified telecommunications service providers under Article 20(1), August 31, 2026 — https://www.soumu.go.jp/menu_news/s-news/01ryutsu02_02000488.html

7. Tokyo District Court — Sender Identification Information Disclosure Order Applications; paper filing, information-provision and non-deletion orders, and distinction from post removal — https://www.courts.go.jp/tokyo/saiban/minzi_section09/hassinnsya_kaiji/index.html

8. Civil Code — e-Gov Laws, including Articles 709, 710, 723 and 724 — https://laws.e-gov.go.jp/law/129AC0000000089

9. Penal Code — e-Gov Laws, including Articles 230, 230-2, 231, 232 and 233 — https://laws.e-gov.go.jp/law/140AC0000000045?occasion_date=20261005

10. Code of Criminal Procedure — e-Gov Laws, including Article 235 — https://laws.e-gov.go.jp/law/323AC0000000131?occasion_date=20261005

11. Supreme Court of Japan, June 11, 1986, 1981(O)609 — injunctive relief based on reputation and constitutional limits on prior restraint — https://www.courts.go.jp/english/Judgments/search/82/index.html

12. Supreme Court of Japan, September 9, 1997, 1994(O)978 — fact versus opinion/comment; truth and reasonable grounds — https://www.courts.go.jp/english/Judgments/search/369/index.html

13. Supreme Court of Japan, January 31, 2017, 2016(Kyo)45 — search-result removal and privacy interests — https://www.courts.go.jp/app/files/hanrei_jp/482/086482_hanrei.pdf

14. Tokyo District Court, August 21, 2025, Reiwa 7 (Wa) 70006 — order requiring X Corp. to remove specified posts — https://www.courts.go.jp/assets/hanrei/hanrei-pdf-94463.pdf

15. Courts of Japan — Case-law Search — https://www.courts.go.jp/hanrei/search2/index.html

16. Copyright Act — e-Gov Laws; alternative or cumulative rights analysis where online content reproduces protected material — https://laws.e-gov.go.jp/law/345AC0000000048

17. Whistleblower Protection Act — e-Gov Laws; relevant where reputation disputes overlap employee or whistleblowing matters — https://laws.e-gov.go.jp/law/416AC0000000122

18. Cabinet Office Consumer Commission — status of designated providers under the Information Distribution Platform Act (May 2026) — https://www.cao.go.jp/consumer/iinkai/2026/489/doc/20260518_shiryou1-1.pdf

19. SAKURA Law Office — Official Website — https://sakura-lawyers.jp/en/

20. SAKURA Law Office — Kenshiro Michishita, Managing Partner — https://sakura-lawyers.jp/en/lawyer/michishita-kenshiro/

Disclaimer

This article provides general information based on Japanese legislation, MIC and court materials, published court decisions and general practice available as of October 5, 2026. It does not constitute legal advice or a legal conclusion concerning any specific post, search result, review, AI output, sender or platform. The availability of takedown, sender identification disclosure, damages, injunctions, criminal complaints, search-result relief or other measures depends on the precise wording and context, rights holder, public-interest and truth-related considerations, evidence, platform architecture, retention of identification data, jurisdiction, terms of service and other case-specific facts. Designated providers, MIC guidelines, court filing procedures and platform reporting mechanisms may change. Legal analysis of generative-AI and AI-search outputs may also depend on the technical design, source material and presentation of the particular service. Specific matters should be assessed under the law, court practice and official materials in force at the relevant time.