Terms of Service

These Terms apply to all matters relating to use of the Service between you and us.

Any guides, notices, plan terms, or other specific rules we publish through the Service (collectively, "Additional Terms") form part of these Terms.

If these Terms conflict with any Additional Terms, the Additional Terms will control unless they state otherwise.

1. "Service" means the AI design service offered under the name Rikyū and its related features.
2. "Provider," "we," "us," or "our" means Kaisei Suzuki, the provider of the Service.
3. "User," "you," or "your" means any individual, company, or other organization that agrees to these Terms and uses the Service.
4. "User Content" means any text, images, logos, instructions, data, or other information you enter, send, upload, or store through the Service.
5. "Output" means any image, text, design, or other material generated, edited, or exported through the Service.

Registration is complete when you apply using our designated process and we approve your application. We may decline an application if we reasonably determine that any of the following applies:

1. The registration information is false, inaccurate, or incomplete
2. The applicant was previously suspended or had an account terminated for violating these Terms or for a similar reason
3. The applicant is under 18 years old
4. We otherwise reasonably determine that registration would be inappropriate

You are responsible for properly securing the Google account and any other credentials you use to register.

You may not transfer, lend, or share your account, or allow anyone else to use it. Any action completed through valid authentication will be treated as an action taken by the account holder.

If you connect Codex, Claude, or another external service through MCP or a similar method, actions taken through that connection will be treated as your own. You are responsible for managing connected services and their credentials.

You must use the Service in accordance with these Terms, any Additional Terms, applicable law, and the terms of any external services you use.

Available features, AI models, credits, and other conditions vary by plan. Current details are shown in the Service's pricing and plan information.

All rights in User Content remain with you or the relevant rights holder. We do not acquire ownership of your User Content.

You represent that you have all rights and permissions needed to use your User Content through the Service and that it does not infringe anyone else's rights.

You grant us permission to use your User Content only as needed to provide, store, process, display, and export it, respond to support requests, and resolve incidents.

Your User Content will not be made available to other users or the public unless you choose to share it.

As a rule, we do not access User Content. Authorized personnel may access it only to the extent necessary to respond to a support request, investigate an outage or defect, address misuse, or comply with law.

We do not use User Content to train AI models. Any analysis we perform to improve the Service uses aggregate statistics that do not identify you or your User Content.

We do not claim any independent ownership of Output. To the extent rights arise in Output, those rights belong to you, subject to applicable law and third-party rights.

You may use, edit, store, and publish Output within the following limits:

1. Free plan: personal and other noncommercial use, including publication on social media for noncommercial purposes. Attribution to Rikyū is not required. You may not sell Output or use it in advertising, a business, monetized content, client work, or any other commercial context.
2. Basic, Pro, and Max plans: personal and commercial use, including selling Output and using it in advertising, a business, monetized content, and client work.
3. Output generated or exported while you have a paid plan may continue to be used commercially after you downgrade or cancel. Output newly generated or exported while you are on the Free plan is subject to the Free plan terms.

Before publishing or commercially using Output, you are responsible for checking its accuracy and legality and confirming that it does not infringe third-party rights.

You must pay the fees displayed in the Service for any paid plan using the payment method we specify. Payments are processed by credit card through Stripe.

Paid plans renew automatically each month. Unless canceled, the fee for the next billing period will be charged on each renewal date.

We may change our fees after notifying you in advance by email or through the Service. New pricing for existing users will take effect at the first renewal after notice is given.

Because of the nature of the Service, we do not offer refunds after payment for user-initiated cancellations or other reasons unrelated to a defect in the Service. If we confirm a material defect or duplicate charge, we will handle any refund or other remedy individually.

Upgrades take effect as soon as payment is complete. You will be charged the prorated difference between your old and new plans for the remaining days in the current billing period.

Downgrades take effect on your next renewal date. You may continue using your current plan until then.

You may cancel through Manage plan in the Service by the day before your next renewal date. After cancellation, you may continue using your current plan through the end of the current subscription period, and you will not be charged on or after the next renewal date.

If payment cannot be confirmed at renewal, monthly credits will expire and we may suspend some or all paid features. You may update your payment method and retry the payment. This does not affect your right to use Output obtained during a paid subscription period.

Free credits granted at registration do not expire. Using all of them will not automatically enroll you in a paid plan.

Monthly credits included with a paid plan expire at the end of that billing period and do not roll over. The current credit allowance for each plan is shown in the Service.

If you hold both monthly credits and non-expiring credits, monthly credits are used first. When you upgrade, unused monthly credits from your previous plan expire and are replaced with the monthly credits included in your new plan.

Credits cannot be redeemed for cash, refunded, transferred to another person, or moved to another account.

If you close or delete your account, all remaining credits expire and cannot be refunded or restored.

1. Violating any law or public policy
2. Committing or facilitating a crime
3. Infringing our rights or anyone else's copyrights, trademarks, publicity rights, privacy, or other rights
4. Entering, generating, storing, or using child sexual exploitation material or any other illegal content
5. Gaining unauthorized access, improperly obtaining credentials, interfering with security features, or otherwise compromising the Service's security
6. Placing an excessive load on the Service's servers or network or disrupting its operation
7. Reverse engineering, decompiling, or analyzing the Service except where expressly permitted by law
8. Evading or manipulating credits, plans, usage limits, safeguards, or other restrictions
9. Creating or using multiple accounts to repeatedly claim free credits
10. Impersonating another person or using false information to access the Service
11. Improperly collecting, storing, or using information about other users or third parties
12. Reselling an account, access rights, or the Service itself without our permission
13. Providing benefits to organized crime groups or similar antisocial forces, or assisting their activities
14. Any other conduct we reasonably determine is inappropriate for operating the Service

The Service relies on Google, Stripe, AI model providers, connected MCP clients, and other external services. An outage, suspension, or specification change affecting an external service may make some or all of the Service unavailable.

Safety standards and other terms imposed by AI model providers may cause certain inputs or generations to be rejected or restricted, including requests involving adult or sexual content. We do not guarantee that any particular generation request will be completed.

When you use an external service, its own terms may also apply to you.

If you breach these Terms, we will generally notify you of the breach and give you a reasonable period to correct it.

In cases of a serious breach, misuse, a security risk, material infringement of third-party rights, violation of law, or an emergency, we may remove content, restrict features, suspend access, or terminate your account without prior notice.

If you do not remedy a breach after being asked to do so, we may restrict some or all use of the Service or terminate your account.

We may temporarily suspend some or all of the Service in any of the following circumstances. Unless there is an emergency, we will provide reasonable advance notice:

1. We perform system maintenance, inspections, or updates
2. A natural disaster, power failure, telecommunications failure, or other force majeure event occurs
3. An external service experiences an outage, suspension, or specification change
4. We need to address a security risk or misuse
5. We otherwise reasonably determine that continuing to provide the Service is impracticable

We may change or discontinue the Service after giving advance notice.

You may close and delete your account using the process we provide.

You cannot delete your account during an active paid subscription. You must first cancel the paid plan and wait until the current subscription period ends.

Data is handled after account deletion in accordance with our Privacy Policy. Deleted data cannot be restored, except for information we retain to meet a legal obligation or for another legitimate reason.

All rights in the software, screens, names, logos, text, and other materials that make up the Service belong to us or the relevant rights holders.

Articles 6 and 7 govern the treatment of User Content and Output.

We handle personal information collected in connection with the Service in accordance with our separate Privacy Policy.

We do not warrant that the Service or any Output will be accurate, complete, useful, fit for a particular purpose, original, continuously available, non-infringing, or free from errors or defects.

Because of the nature of AI, Output may resemble existing works or contain inaccurate or unintended material.

We take reasonable steps to prevent data loss but do not guarantee permanent storage. You should keep your own copies of any Output and data you need.

You are responsible, at your own expense, for resolving any transaction, communication, or dispute with a third party arising in connection with the Service.

Except for ordinary and direct damages caused by a matter attributable to us, we are not liable for lost profits or any indirect, special, or future damages.

Our total liability for damages caused by ordinary negligence will not exceed the fees we received from you during the one-month period immediately before the event giving rise to the claim.

The preceding two paragraphs do not apply to our willful misconduct or gross negligence, or where liability cannot be limited under the Consumer Contract Act or other applicable law.

We may send notices by email to your registered address, display them through the Service, or use another method we consider appropriate.

You must keep your registration information current and accurate. Questions about the Service should be sent to hello@rikyu.ai.

We may change these Terms without obtaining each user's individual consent in accordance with the provisions of the Civil Code of Japan on standard terms and conditions if either of the following applies:

1. The change is in users' general interests
2. The change does not conflict with the purpose of the Service agreement and is reasonable in light of the need for the change, the appropriateness of the revised terms, and other relevant circumstances

Before a change takes effect, we will notify you of the changes and effective date by email or through the Service.

Fee changes are governed by Article 8, paragraph 3, and apply to existing users at their first renewal after notice is given.

You may not assign or transfer your rights or obligations under these Terms, or use them as security, without our prior consent.

If our business relating to the Service is transferred to or otherwise succeeded by a third party, we may transfer our rights and obligations under these Terms, together with the user data needed to provide the Service, to that successor. The successor will assume the data protection obligations set out in our Privacy Policy.

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

These Terms and all agreements relating to the Service are governed by the laws of Japan.