Umibudo Terms of Service

• These Terms of Service (the "Terms") set out the conditions for using "Umibudo" (the "Service"), an outline editor service provided by Kujirahand (the "Operator").
• Anyone who uses the Service (a "User") shall review these Terms and use the Service only after agreeing to them.

Article 1 (Application)

• These Terms apply to the conditions under which the Service is provided and to the rights and obligations between the Operator and the User in relation to use of the Service.
• Guidelines, notices, individual provisions, and other rules posted by the Operator on the Service or on related websites form part of these Terms.
• If these Terms and an individual provision conflict, the individual provision prevails unless that provision states otherwise.

Article 2 (Contents of the Service)

• The Service provides document creation in outline form, information organization, task management, data storage, sharing, publication, AI-assisted text processing, and other related features.
• The Service may be used for personal purposes as well as for work, business, and other commercial purposes.
• The specific features, available storage, usage limits, and other conditions of the Service may differ depending on the plan used.

Article 3 (Eligibility and Use by Minors)

• Persons under 16 years of age may not use the Service.
• A minor who uses the Service shall obtain the prior consent of a parent or other legal representative.
• A minor who applies for a paid plan shall likewise obtain the consent of a legal representative.
• The User represents that they have the legal capacity and authority required to use the Service.

Article 4 (Account Registration)

• Account registration may be required in order to use some or all features of the Service.
• The User shall provide accurate and up-to-date information when registering.
• The User shall promptly update their registration information as necessary when it changes.
• The Operator may refuse registration where the registration details are false, where there has been a past material breach of these Terms, or where the Operator reasonably determines that providing the Service is otherwise inappropriate.

Article 5 (Management of Accounts and Credentials)

• The User shall manage passwords and other credentials appropriately at their own responsibility.
• The User shall not lend, share, transfer, or sell their account to any third party.
• The User shall promptly notify the Operator upon becoming aware of unauthorized use of their account or the risk of such use.
• Operations performed using the User's credentials may be treated as operations performed by that User, except where the Operator is willfully or negligently at fault.

Article 6 (User Data)

• Copyright and other rights in text, outlines, and other data created, entered, stored, or uploaded by the User on the Service ("User Data") belong to the User or to the rightful holder.
• These Terms do not transfer copyright or any other right in User Data to the Operator.
• The User confirms that they hold the rights necessary to use, on the Service, any User Data they enter, store, publish, or share.
• The Operator may handle User Data only to the extent necessary to provide, store, synchronize, back up, display, share, publish, and convert the format of that data, to respond to incidents, and otherwise to operate the Service.
• When the User runs an AI feature, the Operator may process User Data and transmit it to an external AI service to the extent necessary to provide that feature.

Article 7 (Handling of Private Data)

• The Operator will not use User Data stored by the User as private ("Private Data"), or data shared only with specific third parties, for the Operator's own AI training, advertising, promotion, or any other purpose that is not directly necessary to provide the Service.
• The Operator may access Private Data, only to the extent necessary, in the following cases:
  • to investigate and recover from a failure;
  • to investigate a security problem or misuse;
  • to respond to an inquiry or support request from the User;
  • to respond to a request under applicable law or from a lawful public authority;
  • where otherwise reasonably necessary for the safe provision and operation of the Service.
• Where the Operator accesses Private Data under the preceding paragraph, it will not use the contents for any purpose other than that purpose.
• Even as Private Data, the Service may not be used for unlawful acts or other prohibited acts set out in these Terms.

Article 8 (Publication and Sharing)

• The User may use the features of the Service to publish User Data or to share it with specific third parties.
• Data published by the User ("Published Data") may be viewable by an unspecified number of people on the internet.
• Published Data may be collected by search engines and other external services and displayed in search results and similar places.
• Once data has been published or shared, it may be viewed, stored, copied, quoted, or reposted by third parties. Even if the User later stops publication or deletes the data, the Operator cannot completely delete data already stored by third parties or held in search engine caches.
• The User shall check for themselves that data they publish or share contains no personal information, confidential information, or other information they do not wish to disclose.
• The Operator will not repost or use the User's Published Data for advertising, promotion, service introductions, or other publicity purposes without the User's individual consent.
• This Article does not restrict the display and public transmission necessary to carry out the publication or sharing specified by the User on the Service.

Article 9 (Restrictions on Published Content)

• The User shall not include the following in data that is published or shared with third parties:
  • content that violates laws or regulations;
  • content that infringes copyright, trademark rights, privacy, reputation, or other rights of others;
  • obscene content, extremely sexual content, or content involving the sexual exploitation of children;
  • excessively violent or cruel content;
  • content that unjustly promotes discrimination or hatred on the basis of race, ethnicity, nationality, religion, gender, or other attributes;
  • threats, harassment, or serious defamation directed at a specific individual or group;
  • content that specifically promotes, solicits, or supports criminal activity;
  • malware or other harmful programs, or content intended to distribute them;
  • other content that the Operator reasonably determines to be inappropriate for the safe provision of the Service to the public.
• Where the Operator reasonably determines that published or shared data violates this Article, it may, without prior notice, stop publication or sharing of that data, delete it, or take other necessary measures.
• To report an infringement of rights, a violation of law, or a breach of these Terms involving published or shared data, please contact the Umibudo Report Desk.

Article 10 (AI Features)

• The Service may provide text generation, continuation, text correction, and other AI-assisted features ("AI Features").
• When the User uses an AI Feature, the text and outline contents specified by the User and other information necessary to run the feature may be transmitted to an external AI service.
• Information transmitted to an external AI service may be processed in accordance with that external AI service's terms of use, privacy policy, and other conditions.
• The User shall not enter into an AI Feature any information that they are not authorized to enter or transmit.
• Where the User processes personal information, trade secrets, confidential information, or other information unsuited to transmission to third parties using an AI Feature, the User shall confirm the necessity and lawfulness of doing so at their own responsibility.
• Content generated by AI may contain errors, inaccurate information, inappropriate expressions, or content that may infringe the rights of third parties.
• The User shall review AI-generated content themselves and use it at their own responsibility.
• The Operator does not warrant the accuracy, completeness, usefulness, timeliness, or fitness for a particular purpose of AI-generated results, nor that they do not infringe the rights of third parties.

Article 11 (Prohibited Acts)

• In using the Service, the User shall not engage in any of the following acts:
  • acts that violate laws, regulations, or public order and morals;
  • criminal acts, threats of crime, or acts that specifically support the commission of a crime;
  • acts that infringe the rights or interests of others;
  • impersonating others;
  • unauthorized access or attempts at unauthorized access;
  • improperly exploiting vulnerabilities of the Service;
  • distributing malware or other harmful programs;
  • placing an excessive load on the Service, its servers, or its network;
  • interfering with the proper operation of the Service;
  • lending, sharing, transferring, or selling an account to a third party;
  • making bulk or continuous access using APIs, automation tools, bots, scraping, or other means without the Operator's express permission, except for the collection of public pages by ordinary search engines;
  • reselling the Service or any part of it without the Operator's permission;
  • circumventing usage limits of the Service;
  • providing benefits to antisocial forces or engaging in similar acts;
  • other acts equivalent to the foregoing that the Operator reasonably determines to significantly impair the safety or proper operation of the Service.

Article 12 (Data Storage and Backup)

• User Data is stored on servers in order to provide the Service.
• The Operator may carry out backups and other measures within a reasonable scope in order to protect User Data and operate the Service stably.
• The Operator does not warrant that User Data will be stored permanently or that it can be restored in every circumstance.
• The User shall periodically back up or export important data themselves.
• Data deleted by the User cannot, as a rule, be restored.

Article 13 (Long-Term Inactive Free Accounts)

• For accounts on a free plan, where the Service has not been used for one year from the date it was last used, the Operator may delete that account and its User Data without prior notice. Use of the Service includes logging in to the Web version and accessing the Service from the app.
• Accounts and User Data deleted under the preceding paragraph cannot, as a rule, be restored.
• This Article does not apply to accounts during a period in which a paid plan is active.

Article 14 (Paid Plans)

• The Service may offer paid plans.
• The fees, features, storage capacity, billing cycle, and other conditions of paid plans are displayed on the Service's pricing page, the application screen, or another location designated by the Operator.
• Before applying for a paid plan, the User shall review the fees, billing cycle, automatic renewal, cancellation method, and other conditions.
• A paid plan renews automatically at the end of each contract period unless the User cancels it by the prescribed method.
• Where the User cancels a paid plan, the features of the paid plan generally remain available until the next renewal date.
• Except where a refund is required by law or where the Operator separately agrees, no pro-rated or other refund of paid plan fees is made even if the plan is cancelled during a contract period.
• Fees paid after an automatic renewal are likewise non-refundable, except where a refund is required by law or where the Operator separately agrees.
• However, if the Operator terminates the Service for reasons attributable to the Operator under Article 20 and cannot provide the paid plan through the end of the contract period, the Operator will refund the prepaid fee corresponding to the unprovided remaining period in accordance with applicable law and the payment provider's prescribed procedures.
• A User who does not wish to renew shall complete the prescribed cancellation procedure before the next renewal date and time.
• For sales terms and other legally required information concerning paid plans, please see the Disclosure under Japan's Specified Commercial Transactions Act.

Article 15 (Payment)

• Payment for paid plans is processed through an external payment service designated by the Operator.
• Credit card numbers and other payment information are, as a rule, managed by the external payment provider, and the Operator does not retain credit card numbers themselves.
• The external payment provider's terms of use and other provisions may apply to payments.
• Where payment does not complete successfully, the Operator may suspend provision of paid features or, after a certain period, change the account to a free plan.

Article 16 (Changes to Paid Plan Fees)

• The Operator may change the fees for paid plans.
• Where the fees of an ongoing paid plan are changed, the Operator will give prior notice of the change and its effective date by posting on the Service, by notice to the registered email address, or by another appropriate method.
• As a rule, revised fees apply from the next renewal after the notice.
• A User who does not agree to the revised fees may cancel the paid plan before the next renewal.

Article 17 (Data After a Paid Plan Ends)

• Where a change to a free plan resulting from cancellation of a paid plan, payment failure, or another reason causes User Data to exceed the free plan's storage capacity or feature limits, the Operator will, as a rule, not immediately delete the existing data.
• In the case of the preceding paragraph, the Operator may restrict the creation, addition, upload, and other handling of new data.
• The User may organize or delete data themselves in order to stay within the limits of the free plan.

Article 18 (External Services)

• The Service may integrate with external services provided by third parties for authentication, payment, AI, email delivery, and other purposes.
• Use of an external service may be subject to that external service's terms of use, privacy policy, and other provisions.
• Some features of the Service may become unavailable due to failures, specification changes, discontinuation, or other circumstances of external services that the Operator cannot directly control.

Article 19 (Changes, Interruption, and Suspension of the Service)

• The Operator may change, interrupt, or suspend all or part of the Service in the following cases:
  • to perform maintenance, inspection, or updates of the system;
  • where a failure occurs in servers, networks, or other equipment;
  • where a security problem has occurred or is likely to occur;
  • where there is a failure, specification change, or discontinuation of an external service;
  • where an earthquake, typhoon, fire, power outage, communication failure, or other force majeure event occurs;
  • where otherwise reasonably determined to be necessary for the safe or stable provision of the Service.
• The Operator will give prior notice where possible, except in urgent cases.

Article 20 (Termination of the Service)

• The Operator may terminate the provision of all or part of the Service.
• Where the Service is terminated, the Operator will endeavor to notify Users in advance, allowing a reasonable period.
• In the case of a disaster, a serious security problem, the sudden discontinuation of an external service, or other unavoidable circumstances, the Service may be terminated without prior notice.
• On termination of the Service, the Operator will endeavor, to the extent possible, to provide an opportunity for Users to save or export their data.
• For a User whose paid plan has a remaining contract period, the Operator will endeavor, to the extent possible, to continue providing the Service until that period ends. If the Operator cannot continue for reasons attributable to the Operator, it will refund the prepaid fee corresponding to the remaining period in accordance with Article 14.

Article 21 (Usage Suspension, Unpublishing, and Account Deletion)

• Where the Operator reasonably determines that a User falls under any of the following, it may, without prior notice, unpublish or delete User Data, restrict or suspend use of the Service, or delete the account:
  • the User has breached these Terms;
  • an unlawful act or serious misuse has been confirmed;
  • there is a risk of serious harm to other Users or third parties;
  • the safety or proper operation of the Service has been seriously impaired;
  • the registration information contained a material falsehood;
  • other serious circumstances equivalent to the foregoing exist.
• The Operator will take measures within a necessary and reasonable scope, taking into account the degree of the breach, its urgency, and other circumstances.
• If the Operator deletes an account during a paid-plan contract period under this Article, it will deduct from the prepaid fee corresponding to the remaining period the reasonable costs incurred in responding to the breach and the actual loss suffered by the Operator as a result of the breach, to the extent permitted by law, and will refund any remaining balance. The amount deducted will not exceed the average amount of loss that the Operator would incur as a result of that breach.

Article 22 (Withdrawal and Data Deletion)

• The User may delete their account and withdraw at any time by the method prescribed by the Operator.
• Upon withdrawal, the User Data on the servers is deleted.
• Due to the way system backups work, deleted User Data may remain in backups for a certain period.
• Data remaining in backups is deleted in due course as backups are updated, rotated, or otherwise handled.
• Except for information that must be retained by law, data after withdrawal is not used for ordinary service provision purposes.
• Once deleted, accounts and User Data cannot, as a rule, be restored.

Article 23 (Intellectual Property Rights)

• Copyright, trademark rights, and other intellectual property rights in the programs, designs, logos, text, images, and other content that make up the Service belong to the Operator or the rightful holder, excluding User Data.
• These Terms do not transfer to the User any intellectual property right in the Service itself.
• The User shall not copy, modify, redistribute, or sell the programs, designs, or other content of the Service beyond the scope necessary to use the Service, except where permitted by law or by a separately specified license.

Article 24 (Disclaimer of Warranties)

• The Operator endeavors to provide the Service safely and stably, but does not warrant that the Service will always be available without interruption, that no defects will occur, or that all defects will be corrected.
• The Operator does not warrant the accuracy, completeness, usefulness, timeliness, or fitness for a particular purpose of information provided by the Service or by AI Features.
• The User shall back up important data created or stored using the Service themselves.

Article 25 (Scope of Liability)

• Where a User suffers damage due to the Operator's willful misconduct or negligence, the Operator is liable in accordance with applicable law.
• Except where the Operator acts with willful misconduct or gross negligence, the Operator's liability is limited to ordinary, direct, and actual damages, unless applicable law does not permit such a limitation.
• Except where the Operator acts with willful misconduct or gross negligence, the Operator's aggregate liability to a User in connection with the Service is capped at the total Service fees actually received by the Operator from that User during the 12 months immediately preceding the event giving rise to the damage, unless applicable law does not permit such a cap.
• Except where liability arises under applicable law, the Operator is not liable for damages arising from special circumstances, indirect damages, lost profits, or similar damages.
• This Article does not limit the User's rights to the extent that such limitation is not permitted by the Consumer Contract Act or other mandatory provisions of law.

Article 26 (User Responsibility)

• The User shall use the Service at their own responsibility.
• Where a User willfully or negligently breaches these Terms and causes damage to the Operator or a third party, the User is responsible for that damage.
• Where a dispute arises between a User and a third party concerning User Data or other use of the Service, the User shall resolve it at their own responsibility, except where the cause is attributable to the Operator.

Article 27 (Handling of Personal Information)

• The Operator handles personal information of Users obtained in connection with the Service in accordance with the separately established Privacy Policy.

Article 28 (Notices and Communications)

• Notices from the Operator to Users are given by posting on the Service, by email to the registered email address, or by another method the Operator deems appropriate.
• The User shall keep their registered email address accurate and up to date so that they can receive communications from the Operator.
• Where a User fails to receive a notice because they did not update their registration information, the Operator is not liable for that failure, except where the Operator is willfully or negligently at fault.
• Prior notice may not be given for the deletion of long-term inactive free accounts under Article 13.

Article 29 (Changes to These Terms)

• The Operator may change these Terms in response to changes in laws, changes to the Service, business needs, or other circumstances.
• Where these Terms are changed, the Operator will publicize the details of the change and its effective date before that effective date by posting on the Service, by notice to the registered email address, or by another appropriate method.
• For changes that materially affect the interests of Users, the Operator will endeavor to publicize the change in advance, allowing a reasonable period.
• Where a change requires the individual consent of Users under applicable law, the Operator will obtain the necessary consent.
• A User who cannot agree to the revised Terms may end their use of the Service before the effective date.

Article 30 (Assignment of Rights and Obligations)

• The User may not assign or pledge their status under these Terms, or any rights or obligations under these Terms, to a third party without the Operator's prior consent.
• Where the Operator transfers the business relating to the Service to a third party, it may transfer to the assignee of that business, in accordance with applicable law, its status under these Terms, the rights and obligations under these Terms, and the User information necessary to operate the Service.

Article 31 (Severability)

• Even if any provision of these Terms, or part of one, is held invalid or unenforceable under laws or regulations, the remaining provisions and the remaining part continue in full force and effect.

Article 32 (Governing Law and Jurisdiction)

• These Terms are governed by the laws of Japan.
• In the event of a dispute concerning the Service or these Terms, the Yokohama District Court or the Yokohama Summary Court shall be the exclusive agreed court of first instance.

Article 33 (Contact)

• For inquiries about the Service and these Terms, please contact us at the following.
• Operator: Kujirahand
  • Email: web@kujirahand.com

• Established and effective: July 14, 2026