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Terms of Service

These Terms of Service ("Terms") govern your use of all services ("Services") provided by TERACHA ("we" or "us"). By using our Services, you agree to these Terms.

Our Services currently include:

Article 1 — Scope of Application

These Terms apply to all relationships between users and TERACHA related to the use of our Services. In case of conflict with individual service rules, the individual rules shall take precedence.

Article 2 — User Registration

Registration is completed when an applicant agrees to these Terms, submits an application in the manner specified by us, and receives our approval. We may decline registration in the following cases, without obligation to disclose the reason:

  1. False information was provided during registration
  2. The applicant has previously violated these Terms
  3. We otherwise deem the application inappropriate

Article 3 — Fees and Payment

Fees for paid services are displayed on each service's registration page. Payment methods include credit card, Apple Pay, and Google Pay (via Stripe). Subscription plans are billed automatically on each renewal date.

Article 4 — Prohibited Activities

  1. Acts that violate laws or public order
  2. Acts related to criminal activity
  3. Acts that infringe on the intellectual property rights of TERACHA or third parties
  4. Acts that interfere with servers or networks of TERACHA or third parties
  5. Unauthorized commercial use of information obtained through our Services
  6. Unauthorized access or attempts thereof
  7. Unauthorized collection or storage of other users' personal information
  8. Acts that cause disadvantage, damage, or discomfort to other users or third parties
  9. Impersonation of other users
  10. Advertising, solicitation, or sales activities not permitted by us
  11. Providing benefits to antisocial forces
  12. Using AI outputs to deceive or mislead others
  13. Any other acts we deem inappropriate

Article 5 — Special Provisions for AI Services

  1. AI outputs are provided for informational purposes only. We do not guarantee their accuracy, completeness, or usefulness
  2. Do not use AI responses as the basis for medical, legal, financial, or other professional decisions
  3. Conversation content you input is processed and stored solely for the purposes of generating responses and personalization for the individual user, and is protected by technical measures so that no human, including our staff, can view it. We do not use conversation content for "service improvement", "quality monitoring", "training data", or any similar purpose
  4. Conversation data may be transmitted to third-party AI service providers for AI processing, but is not used by those providers to train, fine-tune, or improve AI models
  5. We recommend that you do not input sensitive personal information into conversations
  6. For EEA users: your data is processed in accordance with GDPR. Contact info@teracha.com to exercise your rights

Article 6 — Suspension of Services

We may suspend or interrupt all or part of our Services without prior notice due to system maintenance, force majeure events, communication failures, or other circumstances where we determine provision is difficult. We are not liable for any damages caused by such suspension.

Article 7 — Restrictions and Account Termination

We may restrict use or delete accounts without prior notice if a user violates these Terms, provides false registration information, fails to fulfill payment obligations, does not respond to our communications, or is otherwise deemed an inappropriate user.

Article 8 — Withdrawal

Users may withdraw from our Services by following the procedures we specify. We may retain related data for a period determined by us after withdrawal.

Article 9 — Disclaimer of Warranties and Limitation of Liability

We make no express or implied warranties regarding the safety, reliability, accuracy, completeness, or fitness for a particular purpose of our Services. We are not liable for any damages incurred by users in connection with our Services, except in cases of our own willful misconduct or gross negligence. Where liability cannot be fully excluded, our liability is limited to the fees paid by the user in the month in which the damage occurred.

Consumers. Nothing in these Terms limits or excludes any rights or remedies you have under mandatory consumer-protection laws of your country of residence (including, for EEA/UK consumers, mandatory statutory warranties and liability for death, personal injury, fraud, or gross negligence). Where such mandatory law conflicts with the limitations above, that law prevails.

Article 10 — Changes to Services

We may modify, add to, or discontinue our Services with prior notice. Users agree to such changes.

Article 11 — Changes to Terms

We will notify users at least 14 days before the effective date of any changes, via the Service or by email.

Article 12 — Handling of Personal Information

We handle personal information in accordance with our Privacy Policy.

Article 13–14 — Notices / Non-Assignment

All notices between users and TERACHA shall be made in the manner specified by us. Users may not transfer or pledge their rights or obligations under these Terms to any third party without our prior written consent.

Article 15 — Governing Law and Jurisdiction

These Terms are governed by the laws of Japan, and any disputes shall be subject to the exclusive jurisdiction of the Tokyo District Court as the court of first instance. However, if you are a consumer resident in the EEA, the UK, or another jurisdiction whose law grants you the right to bring proceedings in, or benefit from the mandatory consumer-protection law of, your country of residence, that right is not affected by this clause.