These Terms of Use (the “Terms”) set out the conditions for using the website and related services operated by Chikyu Lab (“we,” “us,” or “our”). By accessing or using our website or services, you agree to these Terms.

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1. Scope and Updates
These Terms apply to all users of our website and services.
We may update these Terms when necessary. The updated version will be posted on our website and will apply from the effective date indicated.
Additional notices, guidelines, or service-specific terms shown on our website form part of these Terms. If a specific service has separate terms or a special privacy notice, those documents will take precedence.

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2. Services
Our services may include, for example:
• Environmental education programs, lectures, and workshops
• Planning, operation, and supervision of research experiences and eco tours
• Development and provision of learning materials and content
• Events and outreach activities
Service details, conditions, and requirements may be described on our website or agreed with the participant as needed.

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3. Donations and Pro Bono Support
We may accept donations and pro bono professional support to advance our research, education, and outreach activities.
Donations are made through methods indicated on our website and are generally non-refundable. If you are a minor or otherwise require consent, please obtain approval from a legal guardian before donating.
Pro bono support details will be agreed on a case-by-case basis.

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4. User Responsibilities
You are responsible for your use of our website and services and must comply with applicable laws and these Terms.
You are responsible for preparing the devices, software, and internet connection necessary to access the website and services.

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5. Prohibited Activities
You must not:
• Use, reproduce, or repost photos, videos, text, or other content from our website without permission
• Violate laws or regulations, or engage in conduct that may violate them
• Infringe or encourage infringement of another party’s rights
• Interfere with the website or services (including excessive access, tampering, unauthorized access, or attacks)
• Engage in conduct contrary to public order or morals
• Use the services if you are associated with organized crime groups or similar anti-social forces
• Engage in any other conduct we reasonably deem inappropriate

We may restrict or suspend access to our website or services if we believe a user has violated these Terms. We are not responsible for losses arising from such measures.

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6. Intellectual Property
All intellectual property rights in the website and services belong to Chikyu Lab or the legitimate rights holders. You may use the website and services only in ways that do not infringe these rights.

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7. Disclaimers and Limitation of Liability
We do not guarantee that the website or services will produce specific outcomes or results.
While we strive to provide accurate and useful information, we do not guarantee accuracy, completeness, timeliness, or suitability for any particular purpose.
We do not guarantee uninterrupted access, error-free operation, or the absence of viruses.
To the extent permitted by law, Chikyu Lab is not liable for indirect, special, or consequential damages, lost profits, or losses arising from events beyond our reasonable control (including natural disasters).

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8. Service Changes, Suspension, or Termination
We may change, suspend, or terminate all or part of the website or services for maintenance, safety, operational needs, or other reasonable circumstances. Where appropriate, we may provide notice, but in urgent cases we may do so without prior notice.

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9. Confidentiality
If we share non-public information with you in connection with a service (e.g., operational details or other confidential information), you must handle it with reasonable care and must not use it for purposes outside the service or disclose it to third parties.

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10. Privacy
Our handling of personal information is governed by our Privacy Policy.

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11. Anti-Social Forces
Users must not be affiliated with anti-social forces (including organized crime groups) and must not engage in conduct connected to such forces. We may refuse service or terminate participation without notice if we reasonably determine a violation.

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12. Assignment
You may not transfer your rights or obligations under these Terms without our prior written consent.

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13. Severability
If any part of these Terms is found invalid or unenforceable, the remaining provisions will remain in effect.

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14. Governing Law and Jurisdiction
These Terms are governed by the laws of Japan. Any dispute arising out of or relating to these Terms shall be submitted to the exclusive jurisdiction of the court having jurisdiction over our principal place of business in Japan.

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15. Contact
For questions about these Terms, please contact us via the inquiry form on our website.

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Effective date: October 21, 2025