Terms of Use

These Terms of Use (hereinafter referred to as the “Terms”) set forth the conditions governing the use of DKgengo (hereinafter referred to as the “Website”).

Users shall review and comply with these Terms when using the Website.

1. Scope of These Terms

These Terms apply to the use of the dictionaries, example sentences, articles, learning content, search functions, and all other services provided through the Website.

If separate terms, notices, guidelines, or other conditions are displayed in connection with a particular service, those conditions shall also form part of these Terms.

If any separate conditions conflict with these Terms, the separate conditions shall prevail with respect to the relevant service.

2. Copyright and Other Intellectual Property Rights

Copyright and other intellectual property rights relating to texts, dictionary explanations, definitions, usage examples, example sentences, translations, pronunciation information, conjugation and inflection information, the selection, arrangement, and systematic organization of data, images, illustrations, videos, audio, software, and other content published on the Website belong to the Website operator or the respective lawful rights holders.

Except as permitted by copyright law or other applicable laws, users may not reproduce, republish, adapt, modify, publicly transmit, distribute, sell, or otherwise use such content without the permission of the relevant rights holder.

The Website does not claim exclusive rights over individual words, general facts, numerical information, or other information that is not protected by copyright.

However, explanations, example sentences, translations, editorial content, and the selection, arrangement, or systematic organization of data created for the Website may be protected by copyright or other applicable rights.

3. Name, Logo, and Branding

Rights relating to the DKgengo name, logo, design, and other branding elements belong to the Website operator or the respective lawful rights holders.

Users may not use such elements without permission in a manner that falsely suggests an affiliation, sponsorship, cooperation, endorsement, or other relationship with the Website.

4. Permitted Use of Content

Users may use the Website for ordinary browsing, personal language learning, research, and other lawful and legitimate purposes.

When using content from the Website under quotation rights or other permissions granted by applicable law, users must comply with the applicable legal requirements, limit the use to the extent reasonably necessary, and clearly identify the source.

Except where permitted by applicable law or expressly authorized in advance by the Website operator, users may not use all or a substantial part of the Website’s content for reproduction, redistribution, sale, resale, inclusion in a database, provision through an API, creation of a competing service, or any similar purpose.

5. Automated Access, Scraping, and AI Use

Except where such use is permitted by mandatory provisions of applicable law or expressly authorized in advance by the Website operator, the following activities are prohibited:

  1. Continuously or extensively accessing or obtaining content from the Website by means of crawlers, scrapers, bots, automated browsing tools, or other automated methods
  2. Automatically extracting, reproducing, storing, collecting, or processing dictionary data, definitions, explanations, example sentences, translations, pronunciation information, conjugation or inflection information, articles, or other content
  3. Using content from the Website to create or provide dictionaries, collections of examples, translation services, search services, databases, APIs, or other services
  4. Using content from the Website for the training, additional training, fine-tuning, evaluation, testing, validation, or any similar purpose involving AI systems or other machine-learning systems
  5. Using content from the Website for retrieval-augmented generation, commonly known as RAG, vectorization, the creation of embeddings, dataset creation, or conversion into any other form intended for use by an AI system
  6. Circumventing, disabling, or interfering with robots.txt instructions, authentication systems, access-frequency restrictions, rate limits, access controls, or other technical measures
  7. Accessing the Website in a manner that places an excessive or unreasonable burden on the Website, its servers, or its network infrastructure

Ordinary crawling by general-purpose search engines for the primary purpose of displaying publicly available pages in search results is not prohibited, provided that the search engine complies with the Website’s robots.txt file and other applicable instructions.

Anyone wishing to use content from the Website for research, education, publication, data services, AI-related use, or any other purpose outside ordinary use must contact the Website operator in advance.

If the Website operator identifies conduct that violates or is reasonably suspected of violating this section, the operator may, without prior notice, block access, restrict access frequency, or take other measures reasonably considered necessary.

6. Links to the Website

Users may generally create ordinary links to publicly available pages on the Website.

However, the following types of links are prohibited:

  1. Links from websites containing unlawful content or content contrary to public order or generally accepted standards of conduct
  2. Links presented in a manner that harms the reputation, credibility, or rights of the Website or any third party
  3. Links presented in a manner that falsely suggests an affiliation, sponsorship, cooperation, endorsement, or other relationship with the Website
  4. Links displayed through frames or similar methods that obscure the fact that the content belongs to the Website
  5. Links that present the Website’s content as though it were content created or owned by the linking party

The Website does not guarantee the content, safety, reliability, or operation of any website that links to the Website.

7. Prohibited Conduct

Users must not engage in any of the following conduct when using the Website:

  1. Infringing the copyright, trademark rights, privacy, reputation, credibility, property, or other rights or interests of the Website, another user, or any third party
  2. Violating applicable laws, regulations, public order, or generally accepted standards of conduct
  3. Engaging in conduct connected with criminal activity
  4. Submitting false information or impersonating another person or entity
  5. Gaining or attempting to gain unauthorized access to the Website, its servers, networks, or other systems
  6. Testing for vulnerabilities, compromising security, or attempting to compromise the security of the Website
  7. Transmitting, providing, or distributing computer viruses, malicious code, harmful data, or other damaging programs
  8. Interfering with or disrupting the operation of the Website
  9. Engaging in automated collection, scraping, crawling, data extraction, or AI-related use prohibited under these Terms
  10. Circumventing or interfering with authentication, access restrictions, rate limits, or other technical measures
  11. Using the Website to unlawfully collect personal information or confidential information relating to another person
  12. Assisting, encouraging, facilitating, or preparing any of the conduct described above
  13. Engaging in any other conduct that the Website operator reasonably determines to be inappropriate in light of the purpose of these Terms

If prohibited conduct is identified or reasonably suspected, the Website operator may, without prior notice, block access, restrict use, or take other measures reasonably considered necessary.

8. Advertising and External Services

The Website may use third-party advertising services, affiliate programs, analytics services, and other external services.

Products, services, representations, contractual conditions, and other information provided through advertisements or external services are the responsibility of the respective providers.

Before purchasing a product, entering into a contract, or otherwise conducting a transaction, users are responsible for reviewing the conditions established by the relevant provider.

For information regarding cookies and the handling of user information, please refer to the Website’s Privacy Policy.

9. Third-Party Websites

The Website may contain links to websites operated by third parties.

Third-party websites are managed and operated under the responsibility of their respective operators.

The Website does not guarantee the content, accuracy, completeness, currency, safety, availability, or operation of any third-party website.

Users should review the terms of use and privacy policies of each third-party website before using it.

10. Changes, Suspension, and Discontinuation of the Website

The Website operator may, without prior notice, modify, suspend, or discontinue all or part of the Website in any of the following circumstances:

  1. When maintenance, inspection, repair, or updating of systems, servers, or communication equipment is required
  2. In the event of fire, power failure, communication failure, natural disaster, or other circumstances beyond reasonable control
  3. In the event of unauthorized access, cyberattacks, or other security incidents
  4. When action is required by applicable law, an administrative authority, or a court
  5. When the Website operator reasonably determines that modification, suspension, or discontinuation is necessary for the operation of the Website

The Website does not guarantee that the service will be provided permanently, that any particular function will continue to be available, or that previously published content will remain available.

11. Information Published on the Website

The Website endeavors to maintain the accuracy, completeness, currency, and usefulness of its information, but does not guarantee any of these qualities.

Dictionary definitions, translations, pronunciation information, example sentences, conjugation and inflection information, grammar explanations, and other information are provided for general reference purposes only.

The meaning, pronunciation, usage, appropriateness, and interpretation of a word or expression may vary depending on context, region, period, speaker, specialist field, and other circumstances.

Information provided through the Website does not constitute legal, medical, tax, investment, or other professional advice.

The Website does not guarantee the accuracy of its information when used for translation, interpreting, contracts, legal documents, official applications, or similar purposes.

When using information from the Website for business documents, legally significant documents, medical matters, legal matters, tax matters, investments, contracts, official procedures, or any other purpose in which an error could have serious consequences, users must, at their own responsibility, verify the information through original sources, public authorities, qualified professionals, or other reliable sources.

Before using information from the Website, users are responsible for independently confirming its accuracy, currency, completeness, suitability for the intended purpose, and safety.

Users shall use information from the Website at their own judgment and responsibility.

Except where the relevant matter is attributable to the Website operator, users shall be responsible for decisions, contracts, applications, translations, statements, posts, studies, business activities, and other actions taken on the basis of information from the Website, as well as the consequences of those actions.

12. Operation and Security

The Website does not guarantee uninterrupted or error-free operation, compatibility with every device or browser, or the immediate correction of defects.

Although the Website endeavors to maintain appropriate security, it does not guarantee that computer viruses, unauthorized access, tampering, or other security risks will never occur.

Users are responsible for maintaining appropriate security measures and backups for their own devices, communication environments, software, and data.

13. Limitation of Liability

The Website operator shall be liable for damages only where there are circumstances attributable to the operator and only in accordance with applicable law.

Where the Website operator is liable for damage caused by ordinary negligence, the operator’s liability shall be limited to direct and ordinary damages actually incurred by the user.

In such cases, to the extent permitted by applicable law, the Website operator shall not be liable for damage arising from special circumstances, indirect damage, consequential damage, loss of profits, loss of business opportunities, loss of data, or similar losses.

The limitations described in the preceding two paragraphs shall not apply to damage caused by the intentional misconduct or gross negligence of the Website operator.

Any disclaimer or limitation of liability contained elsewhere in these Terms shall not apply to the extent that such disclaimer or limitation is prohibited by applicable law.

14. User Responsibility

If a user causes damage to the Website operator or any third party through a violation of these Terms, unlawful conduct, or other conduct resulting from the user’s intentional act or negligence, the user shall be responsible for compensating for such damage in accordance with applicable law.

Any dispute arising between a user and a third party shall be resolved by the user at the user’s own responsibility and expense.

However, this shall not apply to the extent that the dispute is attributable to the Website operator.

15. Changes to These Terms

The Website operator may amend these Terms in either of the following circumstances:

  1. When the amendment is in the general interest of users
  2. When the amendment is reasonable in light of the necessity of the amendment, the appropriateness of the amended provisions, changes to the services, and other relevant circumstances

When these Terms are amended, the amended provisions and the effective date will generally be posted on the Website.

Where an amendment may have a material effect on users, the Website operator will endeavor to provide advance notice by a reasonable method.

If immediate action is required for security reasons, legal compliance, or other unavoidable circumstances, notice may be provided promptly after the amendment.

16. Severability

If any provision of these Terms is held to be invalid or unenforceable under applicable law or by a court of competent jurisdiction, the remaining provisions shall remain in full force and effect.

Any invalid or unenforceable provision shall apply, to the extent permitted by law, in a manner that most closely reflects its original purpose.

17. Governing Law

These Terms, and all matters relating to their formation, interpretation, and application, shall be governed by the laws of Japan.

18. Governing jurisdiction

Unless otherwise provided by applicable law, the Osaka District Court or the Osaka Summary Court shall have exclusive jurisdiction as the court of first instance over any dispute arising out of or relating to this website or these Terms.

19. Contact

For inquiries concerning these Terms, please contact us through the contact page on the Website.

20. Official Language

This English version is provided as a translation of the Japanese version for the convenience of users.

If there is any inconsistency, conflict, or difference in interpretation between the Japanese version and this English version, the Japanese version shall prevail.

Last updated: June 20, 2026