Terms of Service

Effective Date: July 16, 2026

These Terms of Service (the "Terms") set out the rights, obligations, responsibilities, and other necessary matters between ONE Tool (the "Company") and its Members in connection with the use of RIRU (the "Service") operated by the Company.

Generative artificial intelligence (AI) is actively used in the operation of the Service and in the creation and provision of its content. The majority of features—including AI character chat, image generation, and voice generation—are operated and provided on the basis of generative AI. Members use the Service only after understanding and agreeing to this.

1. Service: The AI character chat, image generation, voice services, character/story/item creation, Studio, and all other features that the Company provides through wired and wireless devices.

2. Member: A person who has agreed to these Terms and the Privacy Policy and has been granted the right to use the Service by the Company.

3. Content: All material that a Member inputs, uploads, posts, or transmits to the Service (text, images, voice, prompts, character settings, story settings, etc.).

4. Generated Output: Output (text, images, voice, etc.) automatically generated by an AI model based on Content, prompts, commands, and the like.

5. Ruby: Virtual currency purchased and used within the Service for a fee.

6. Firewall: A filtering feature that controls access to adult content within the Service. When the Firewall is turned OFF, adult content may be used only by Members who have completed identity (KYC) verification and are confirmed to be adults—18 years of age or older, or the age of majority in the Member's jurisdiction, whichever is higher.

   • KYC verification: The identity- and age-verification process the Company (directly or through an approved third-party provider) uses to confirm a Member's identity and age, for example by checking a government-issued identity document. KYC verification gates access to adult features (Firewall OFF) and may be required for certain paid features.

7. Incentive: Creator reward points that accrue when Content such as characters and stories created and published by a Member is used by other Members, calculated as a percentage of the usage (API) consumption attributable to that Content. Incentives can be converted only into Ruby within the Service; they have no monetary value and cannot be exchanged for cash.

8. Operating Policies: Policies separately established and announced by the Company for the efficient operation of the Service (e.g., the Content Creation and Operation Policy, the Creator Operating Policy).

9. Terms not defined in this Article shall follow applicable laws and regulations, individual service terms, and general practice.

① The Company shall post these Terms on the initial screen of the Service or on a linked screen.

② The Company may amend these Terms within the scope permitted by applicable laws and regulations, and shall announce the amended content and its effective date at least 7 days in advance (30 days in advance for changes unfavorable to Members).

③ If a Member does not expressly indicate a rejection during the announcement period, the Member shall be deemed to have agreed to the amended Terms.

④ A Member who does not agree to the amended Terms may indicate rejection and terminate the use contract before the effective date.

① The Company may establish separate Operating Policies and individual service terms. In the event of a conflict, the individual terms shall prevail.

② The Company may post individual service policies within the Service, such as the Content Creation and Operation Policy, the Creator Operating Policy, and the AI Ethics and Safety Guidelines. Such individual service policies form part of these Terms. By agreeing to these Terms, a Member is deemed to have agreed to comply with the above individual service policies.

③ Matters not specified in these Terms shall follow applicable laws and regulations and commercial practice.

① The use contract is formed when an applicant for membership agrees to the Terms and the Privacy Policy and the Company approves the application.

② Agreement is completed by selecting a checkbox or clicking the "Agree" button.

① An applicant must enter true, accurate, and up-to-date information, and the Company may require identity verification.

② The Company may refuse or cancel approval, or terminate the contract, in any of the following cases:

1. Failure to use a real name, or use of another person's name;

2. False or omitted information;

3. A purpose that undermines social order or public morals;

4. An unlawful commercial, fraudulent, or hacking purpose;

5. Violation of Company policies;

6. A record of withdrawal within the past 7 days;

7. Failure to meet other usage requirements established by the Company.

③ Age restriction. When you register to use the Service, you agree to provide accurate and complete information about yourself. If you are under 13 years old, OR if you are under 16 years old and a citizen or resident of the European Economic Area (EEA) or the United Kingdom (UK), do not sign up for the Service — you are not authorized to use it. Where the law of your jurisdiction requires a higher minimum age, that higher age applies. Access to adult features and, where applicable, paid features requires successful KYC verification confirming your age.

④ Sanctioned jurisdictions. The Service is not offered to, and may not be registered for or used by, persons described in Article 40 (Sanctions and Export Controls).

① Members may view and edit their personal information and must promptly update any changes.

② Members are responsible for managing their ID and password, and are responsible for any unauthorized use.

③ As a rule, one person may hold only one account, and accounts may not be transferred to or shared with others.

① The Company shall not engage in any act prohibited by laws or these Terms or contrary to public order and morals, and shall use its best efforts to provide the Service continuously and stably.

② The Company shall maintain a security system for the protection of personal information so that Members can use the Service safely, and shall disclose and comply with its Privacy Policy.

① The Company provides the following services:

1. Chat service with AI characters;

2. AI image generation service;

3. AI voice conversation service;

4. Character/story/item creation service;

5. Studio (a professional story-creation tool);

6. Other services determined by the Company.

② The Service is, in principle, provided 24 hours a day, year-round.

③ The Company may differentiate the scope of use by Member tier or pricing plan.

④ The Company may change or suspend all or part of the Service as necessary for operational or technical reasons, and shall give notice 7 days in advance (30 days in advance where unfavorable to Members), except where unavoidable.

⑤ Members warrant that the Content and Generated Output they input, post, publish, or generate in the course of using the Service does not contain any information that is unlawful under applicable law or that infringes any intellectual property right, portrait right, reputation, or other right of a third party. Where any legal or ethical issue or any dispute with a third party arises in this connection, the Member bears all responsibility.

⑥ The Company makes no representation or warranty of any kind regarding the legality, accuracy, reliability, usefulness, fitness for a particular purpose, or any other characteristic of Content and Generated Output.

⑦ Members must use all services provided by the Company in a reasonable and responsible manner and, regardless of the type of product, must not engage in any of the following:

1. Excessive use to a degree that affects the stability of the Service;

2. Abnormal API extension, automation, or bot creation;

3. Malicious use such as sharing, transferring, or rotating accounts.

⑧ Where the Company detects that a Member has violated, or is reasonably suspected of violating, Paragraph 7, the Company may restrict use of the Service or suspend or delete the account without prior notice pursuant to Article 33, and refunds may be restricted in accordance with applicable laws, these Terms, and Operating Policies.

⑨ Creation and publishing. Members may create characters, stories, and other Content and use them privately within the Service. However, publishing Content — making it available to other Members — is not currently offered on the Service governed by these Terms. Content available for Members to interact with (other than their own private creations) is content made available within the Service by the Company, including content published under the Korean-language service. The Company may introduce publishing features in the future, including a prior-review (approval) process; the specific conditions will follow the Operating Policies announced at that time, and any such review will not constitute an endorsement or a warranty of the reviewed Content.

① The Company may suspend the Service upon the occurrence of unavoidable causes such as equipment failure, power outage, natural disaster, or partner-related problems, and where prior notice is not possible, shall give notice afterward. The same applies where normal provision of the Service becomes difficult due to causes on the part of external partners, including problems with the servers of the AI model providers (such as Anthropic and Google) that the Company uses to provide the Service.

② Where the Service is terminated due to a business transfer, division, merger, or the like, the Company shall give notice 30 days in advance and provide Members with an opportunity to back up their data.

① The Company may provide Members with various information deemed necessary during use of the Service by means such as email, in-service notifications, and SMS.

② Where such information constitutes advertising, the Company shall obtain the Member's prior consent to receive it, and the Member may refuse receipt at any time.

① Ruby is virtual currency purchased and used within the Service for a fee.

② Ruby cannot be exchanged for cash and cannot be transferred to or sold to others.

③ All Ruby expires one year after the date it is acquired — for purchased Ruby, one year from the date of purchase; for Ruby converted from Incentives or otherwise granted, one year from the date of conversion or grant.

④ Ruby granted additionally through promotions (such as a first-purchase bonus) and Ruby obtained by converting Incentives is deemed free Ruby. Free Ruby cannot be exchanged for cash, cannot be transferred, and is excluded from refunds. Where a Member holds both paid and free Ruby, paid Ruby is deducted first; where there are multiple lots of paid Ruby, the lot with the earliest expiration date is deducted first. Free Ruby is deducted only after all paid Ruby has been exhausted.

① The amount and payment method for paid services follow each service screen or a separate policy.

② Payment may be made by credit card, debit card, carrier (mobile) billing, or other methods designated by the Company. Payments are processed through Coda Payments (Codapay) and its supported payment channels. Applicable taxes may be added at checkout where required by law.

③ Subscription products automatically renew on the same terms unless cancelled at least 24 hours before the end of the billing cycle.

④ Payment by minors: Where a minor (a person under the age of majority in their jurisdiction) makes a payment without the consent of their legal representative, the minor or their legal representative may cancel the contract in accordance with applicable law. However, cancellation may be restricted where the minor paid within the scope of property permitted by the legal representative, or used deception such as pretending to be an adult.

① A Member who has entered into a paid-service use contract may withdraw the subscription within 7 days of the later of the payment date and the date the content becomes available — or within any longer period mandated by applicable consumer law in the Member's jurisdiction (for example, 14 days for consumers in the EEA and the UK) — provided that the purchased Ruby has not been used at all. For EEA/UK consumers, by using purchased Ruby before the withdrawal period expires, you expressly consent to immediate performance and acknowledge that you thereby lose your statutory right of withdrawal with respect to the digital content supplied.

② Withdrawal of subscription is restricted in the following cases:

1. Where any portion of the purchased Ruby has been used and provision of the digital content has thereby commenced;

2. Where the applicable withdrawal period under Paragraph 1 has elapsed since the payment date;

3. Where the Service has been lost or damaged due to a cause attributable to the Member.

③ The Company shall indicate, in a place easily visible to Members such as the payment screen, that withdrawal of subscription may be restricted after use has commenced due to the nature of digital content. Without such indication, withdrawal of subscription cannot be restricted.

④ Where a paid service differs from its description or advertisement, or is performed differently from the contract, the Member may withdraw the subscription within 3 months from the date the service was provided, or within 30 days from the date the Member became aware or could have become aware of the fact.

⑤ Refunds are not available in the following cases:

1. Ruby already used;

2. Where free benefits were received through a subscription;

3. Free Ruby (Ruby granted through events or promotions, including first-purchase bonuses, and Ruby converted from Incentives);

4. Incentive points themselves, whether or not converted;

5. Where use has been restricted due to a violation of these Terms.

⑥ Refund amounts are calculated as follows. Withdrawal of subscription (Paragraph 1) and mid-term termination refunds are separate rights; even where withdrawal of subscription is restricted, a Member may request the mid-term termination refund below for unused paid Ruby. The specific calculation method for non-refundable items such as free Ruby, and for cases where paid and free Ruby are used together, follows a separate Refund Policy.

• Refund upon withdrawal of subscription (within the applicable withdrawal period, Ruby unused): refunded to the original payment method without deduction of any fee.

• Refund upon mid-term termination (after the applicable withdrawal period, or after use has commenced): refunded to the original payment method after deduction of a 10% refund fee on unused paid Ruby.

• Payment-gateway fees for legitimate refunds are borne by the Company.

⑦ Subscription refunds

1. Subscription products automatically renew on the same terms unless cancelled at least 24 hours before the end of the billing cycle.

2. Upon cancellation of a subscription, the Member may continue to use the Service for the remainder of the current billing cycle, and billing stops from the next billing cycle.

3. Free benefits provided through a subscription (such as bonus Ruby) are excluded from refunds.

⑧ Where an overpayment occurs, the Company shall refund it to the Member. Where the overpayment occurred due to the Member's fault, the actual costs incurred in making the refund shall be borne by the Member within a reasonable scope.

⑨ Where the Service is terminated for reasons attributable to the Company, unused paid Ruby shall be handled in accordance with the refund procedures in this Article. The Company shall give notice at least 30 days before termination of the Service.

⑩ To request a refund, please contact support@riru.ai including your RIRU nickname, the transaction ID for which you want a refund, the amount of Ruby you wish to refund, and the reason for the refund.

⑪ Matters not specified in this Article follow the applicable consumer-protection laws (in Korea, the Act on Consumer Protection in Electronic Commerce, etc.) and other applicable laws.

Incentives accrue only in respect of published Content. As publishing is not currently offered under these Terms (Article 10(9)), this Article applies from the point the Company makes publishing available to the Member.

① When Content such as characters and stories created by a Member is used (through the use of Ruby), the Company accrues a percentage of the usage (API) consumption attributable to that use (the "Usage Amount") as creator Incentive points. The specific applicable rate follows the Creator Operating Policy. The same applies to the Member's own use.

② A Member may convert accrued Incentive points only into Ruby within the Service. Ruby obtained through Incentive conversion is deemed free Ruby under Article 13(4): it has no monetary value, cannot be exchanged for cash, cannot be transferred or sold, and is excluded from refunds. Incentive points themselves likewise have no monetary value and cannot be exchanged for cash or transferred. The conversion rate is determined by the Company and announced in advance where changed.

③ The specific calculation rate, payment conditions, membership-tier criteria, and settlement timing of Incentives follow a separate Creator Operating Policy.

④ Incentives arising through improper means, such as intellectual property infringement or violation of these Terms, may be recovered.

⑤ Upon withdrawal of membership, unconverted Incentives are forfeited.

① Copyright and intellectual property rights in the software, UI, design, algorithms, and the like of the Service belong to the Company or the rightful holder.

② Member Content: Copyright in characters, settings, and worldviews created by a Member belongs to the Member. The Member grants the Company a non-exclusive, worldwide, perpetual, royalty-free, transferable, and sublicensable license to use the Content and Generated Output by means of storage, reproduction, modification, public transmission, exhibition, distribution, creation of derivative works, and the like, for the purposes of providing, operating, improving, promoting, and researching the Service.

③ Generated Output: To the extent permitted by law, copyright in Generated Output belongs to the Member. To the maximum extent permitted by applicable law, the Member grants the Company a license on the same terms as Paragraph 2.

④ The Company shall not use characters, settings, worldviews, or outputs created by a Member for commercial purposes outside the Service (such as merchandise production or provision to external platforms) without the Member's prior approval.

⑤ Where a Member has published Content within the Service, the Member is deemed to have agreed that other Members may interact with that Content (through conversation, prompting Generated Output, etc.) via features within the Service.

⑥ Where a dispute arises due to Content that infringes a third party's rights, the Member bears responsibility.

⑦ The license under this Article remains valid while the Company operates the Service and continues to apply after the Member's withdrawal.

① The Company may review Content, upon report or on its own initiative, to determine whether it is unlawful or violates Operating Policies, and may delete or refuse to post Content reasonably determined to violate these Terms, Operating Policies, or laws. However, this does not mean that the Company necessarily reviews Content or has an obligation to do so.

② Where a Member violates applicable laws or these Terms, or where the Company otherwise deems it necessary, such as upon detecting abnormal use, the Company may at any time delete that Member's Content and Generated Output from the Service or take temporary or permanent use-restriction measures. The Company bears no responsibility to the Member in this connection.

③ The Company may monitor Members' use of the Service and their Content solely for the purpose of detecting and preventing violations of applicable laws or these Terms. For clarity, the Company does not bear an obligation to conduct such monitoring.

④ The Company may store data related to Members' use of the Service for purposes such as backup. For clarity, the Company does not bear an obligation to conduct such storage and is not responsible for data loss.

⑤ Where a rights holder claims infringement, they may notify the Company at support@riru.ai, and the Company will take interim measures within 72 hours and then verify the facts. A report must include the following information:

1. The reporter's name and contact information;

2. The location of the infringing Content (URL, character name, etc.);

3. Materials that can prove the fact of infringement;

4. A statement of intent to request deletion or blocking.

Members understand and agree to the following:

1. Responses generated by AI are not the opinions or advice of an actual human.

2. AI responses may contain errors, inaccurate information, or fabrication (AI hallucination).

3. AI cannot provide professional advice such as medical, legal, or financial advice, and you must always seek professional advice for important decisions.

4. Conversations with AI may be used to improve the Service and enhance safety.

5. AI characters are fictional entities, not real people, and the AI's expressions of emotion are programmed responses.

6. A relationship with AI cannot replace real human relationships, and excessive reliance on AI may be harmful to mental health.

Using the AI Service for the following purposes is prohibited:

1. Planning, promoting, or carrying out illegal activities;

2. Harassment, intimidation, or defamation of others;

3. Generating content harmful to minors;

4. Attempting to collect or leak personal information without authorization;

5. Cybercrime activities such as malware, phishing, and spam;

6. Generating and disseminating false information or fake news;

7. Attempting to deceive the AI to bypass safety measures (jailbreaking);

8. Generating false statements or actions of real persons;

9. Passing off AI outputs as human-generated;

10. Using Generated Output without authorization to train one's own machine-learning model.

① The Company applies high-risk prompt-detection models and content-moderation filters across the entire Service.

② Even in adult mode (Firewall OFF), the following are never generated:

• Sexual content involving minors;

• Child sexual abuse material (CSAM);

• Provision of specific means for illegal acts.

③ Conversations are stored in encrypted form, and Members may request deletion of their conversation history at any time.

① If you are experiencing thoughts of self-harm or suicide, please contact a professional support service immediately. If you are in immediate danger, contact your local emergency services.

• International: Find a helpline in your country at findahelpline.com or via the International Association for Suicide Prevention (iasp.info/resources/Crisis_Centres).

• Republic of Korea: Suicide Prevention Counseling — 1393; Mental Health Crisis Counseling — 1577-0199.

The Company complies with applicable laws for the protection of minors (in Korea, the Act on Promotion of Information and Communications Network Utilization and Information Protection, the Youth Protection Act, and the Act on the Protection of Children and Youth against Sex Offenses, among others) and works to prevent minors from being exposed to harmful information and to create a safe service environment. The Company distinguishes adult content from other content within the Service and maintains adult-verification procedures to use its best efforts to prevent children and youth from being exposed to adult content.

① Members must meet the minimum age set out in Article 7(3). Registration is age-gated, and Members warrant that the age information they provide is true.

② Members who have not reached the age of majority applicable to them may use the Service only in Firewall ON (Safe) mode and may not use adult features or any feature that requires adult (KYC) verification.

③ Firewall OFF (adult mode) is available only to Members who have completed KYC verification and are confirmed to be adults (18 years of age or older, or the age of majority in the Member's jurisdiction, whichever is higher). KYC verification is performed through the Company's designated verification provider, Didit, for example by checking a government-issued identity document. The handling and retention of verification data are described in the Privacy Policy.

④ Where a user provides false information regarding their age or attempts to circumvent KYC verification, responsibility rests entirely with the user. Where a user is found not to meet the applicable minimum age, or fails KYC verification required for a feature, the Company may immediately restrict, suspend, or terminate the account and access to the relevant features.

The generation, dissemination, request, or brokering of the following content is prohibited:

1. Any sexual depiction of minors (persons under 18, or under the age of majority in the applicable jurisdiction) or of characters that could be perceived as minors;

2. Illegally filmed material or sexual exploitation material (whether real or synthetic);

3. Providing methods of, glorifying, encouraging, or promoting dangerous behavior related to self-harm, suicide, or violence;

4. Participation in or promotion of illegal acts such as drugs or gambling;

5. Incitement of hatred or violence against a specific group;

6. Other content that violates laws or these Terms.

① Firewall ON (default mode): Blocking of harmful topics, masking of sensitive keywords, and provision of alternative responses are applied by default for all users.

② Firewall OFF (adult mode): The option to disable the Firewall is exposed only after KYC verification confirming adult status (18 or older, or the age of majority in the Member's jurisdiction, whichever is higher) is completed. Even when the Firewall is disabled, illegal, non-consensual, minor-related, and serious-crime-promoting content, among others, is never generated.

③ Attempts to evade policies through prompt circumvention, slang, or subtle expressions are deemed violations.

① The Company detects harmful content through AI filters, keyword analysis, pattern matching, and user reports, and immediately blocks or blinds content with a high likelihood of being harmful to youth.

② For violations, the Company applies staged measures such as warning messages, temporary feature restrictions, ending the conversation, deleting characters, and account suspension or permanent ban.

③ Upon detecting crisis signs such as self-harm or suicide, the Company gives priority to providing safety guidance and the contact information of professional organizations.

① A guardian who has completed identity verification may request restriction of a minor child's account use or blocking of specific features, to the extent permitted by applicable law.

② Guardians may withdraw consent at any time through support@riru.ai.

• Name: Kang Ji-woong

• Affiliation: CEO, ONE Tool

• Contact: +82-70-7954-9564

• Email: support@riru.ai

Members must not engage in the following conduct:

1. Entering false information or misappropriating another person's information or payment method;

2. Interfering with the normal operation of the Service (hacking, automated access programs, etc.);

3. Transferring or lending accounts, or improperly acquiring or transferring Ruby;

4. Infringing the intellectual property rights, reputation, portrait rights, or other rights of others;

5. Creating characters that imitate or impersonate real persons (celebrities, politicians, private individuals, etc.);

6. Generating sexual content or harmful content targeting minors;

7. Generating or distributing content that promotes illegal acts;

8. Generating or distributing content that promotes suicide or self-harm;

9. Circumventing adult verification (Firewall disabling) using technical means such as VPNs;

10. Other conduct that violates applicable laws, these Terms, or Operating Policies.

The generation or distribution of the following content is prohibited:

1. Child sexual abuse material or sexual content involving minors;

2. Content involving false statements, defamation, or sexual reproduction of real persons;

3. Content that promotes illegal acts;

4. Content that promotes suicide or self-harm;

5. Content that infringes another's copyright or portrait rights;

6. Content that promotes hatred, discrimination, or violence against a specific group;

7. Other content deemed unethical or inappropriate by generally accepted social standards.

The Company reviews content according to the above criteria and may delete it or restrict use without prior notice in the event of a violation. Detailed standards for the operation of characters and stories follow a separate Content Creation and Operation Policy.

① A Member may terminate the use contract at any time through the procedures within the Service.

② Upon withdrawal, any Ruby and unconverted Incentive points held are immediately forfeited and cannot be recovered.

③ After withdrawal, personal information is handled in accordance with applicable laws and the Privacy Policy.

① Where a Member violates these Terms or Operating Policies or interferes with the normal operation of the Service, the Company may restrict use of the Service in stages, including by warning, temporary suspension, or permanent suspension of use.

② The Company shall give prior notice of the grounds, period, and objection method for the measure (or notice afterward in urgent cases).

③ A Member may submit a written or email objection within 14 days from the date of receiving notice of the measure, and the Company shall respond within 30 days.

④ Where the Company has imposed a sanction under this Article due to a Member's violation of these Terms, refunds or compensation in connection with the Member's use of paid services may be restricted in accordance with applicable laws, these Terms, and Operating Policies.

① Where a Member causes damage to the Company through a violation of these Terms or applicable laws, the Member must compensate for it.

② Where the Company is subjected to a claim or lawsuit by a third party due to a Member's violation, the Member must indemnify the Company at the Member's own expense and compensate for any damage from which the Company is not indemnified.

① The Company is not liable where provision of the Service becomes impossible due to force majeure such as natural disaster, war, power outage, or information/communications network failure.

② The Company is not liable for damage incurred by a Member due to any of the following causes, except in cases of the Company's intent or gross negligence:

1. Where use of the Service is impossible due to repair, replacement, regular inspection, construction, or other similar causes affecting service equipment;

2. Obstruction of service use due to the Member's intent or negligence;

3. Insufficient reliability or accuracy in posts made by other Members;

4. Transactions or disputes arising between Members, or between a Member and a third party, through the Service;

5. Use of services provided free of charge;

6. Where revenue or benefit that a Member expects to obtain through use of the Service is not realized;

7. Where leakage of Member information occurs because the Member failed to manage their account password, mobile-device password, or the like;

8. Where a Member is unable to use all or part of the content's functions due to a change of mobile device, a change of operating-system (OS) version, a change of carrier, or the like;

9. Where a Member voluntarily deletes content or account information provided by the Company;

10. Illegal access to servers by a third party, illegal use of servers, or abnormal access interference using programs;

11. Where normal provision of the Service becomes difficult due to causes on the part of external partners, including problems with the servers of the AI model providers the Company uses to provide the Service;

12. Other causes not attributable to the Company that are comparable to those above.

③ The Company does not guarantee the legality, originality, exclusivity, reliability, accuracy, truthfulness, usability, or fitness for a particular purpose of AI Generated Output. The Company is not liable for a Member's failure to obtain expected revenue through use of the Service and, absent intent or gross negligence, is not liable for damage arising from other outputs obtained through the Service.

④ Responsibility for all issues arising in connection with the use of AI Generated Output rests with the Member, and the Company bears no liability whatsoever absent intent or gross negligence.

⑤ The Company is not liable for the reliability, accuracy, or other aspects of information, materials, or facts that a Member has posted in connection with the Service, or that are searched or recommended within the Service.

⑥ All responsibility rests with the Member where damage arises in connection with materials the Member has posted or transmitted, or where any disadvantage arises in connection with the selection of materials.

The Company displays the following on the Service screen so that Members can easily see it:

• Business name: ONE Tool

• Representative: Kang Ji-woong

• Address: #Y-7127, Garden Five Life, 66 Chungmin-ro, Songpa-gu, Seoul, Republic of Korea

• Business registration number: 592-68-00678

• E-commerce license number: 2025-Seoul Songpa-3239

• Phone: +82-70-7954-9564

• Email: support@riru.ai

① The Company may give notice to Members by means such as email, in-service notifications, and SMS.

② Notice to an unspecified number of Members may be substituted by posting on the Service screen for 7 days or more.

① Governing law. Except where mandatory local law provides otherwise, these Terms and any dispute arising out of or relating to them or the Service are governed by and construed in accordance with the laws of the Republic of Korea, without regard to its conflict-of-laws rules.

② EEA/UK consumers. If you are a consumer habitually resident in the European Economic Area (EEA) or the United Kingdom (UK), these Terms are governed by the laws of your country of habitual residence, and you retain the protection of the mandatory provisions of that law. Such consumers may bring proceedings in the courts of their country of residence, and the arbitration provisions in Article 39 do not apply to them.

③ Courts. Subject to Article 39 (binding arbitration) and to any mandatory consumer-protection law that grants you a different forum, disputes shall be submitted to the court having jurisdiction under applicable law. To the extent permitted, the parties designate the Seoul Central District Court of the Republic of Korea as the court of first instance.

This Article does not apply to consumers habitually resident in the EEA or the UK (see Article 38(2)), to Members who accepted the Korean-language Terms of Service, or where binding pre-dispute arbitration of consumer claims is prohibited by applicable law.

① Agreement to arbitrate. You and the Company agree that any dispute or claim arising out of or relating to these Terms or the Service shall be resolved by final and binding individual arbitration, rather than in court, except that either party may bring qualifying claims in small-claims court. The arbitration shall be administered by the Korean Commercial Arbitration Board (KCAB INTERNATIONAL) in accordance with its International Arbitration Rules in effect at the time the arbitration is commenced. The seat of arbitration shall be Seoul, Republic of Korea; the language of the arbitration shall be English; and the tribunal shall consist of one arbitrator. Hearings may be conducted remotely (by video conference) where appropriate. Judgment on the award may be entered in any court of competent jurisdiction.

② Class action and jury waiver. You and the Company agree that each may bring claims against the other only on an individual basis, and not as a plaintiff or class member in any purported class, consolidated, or representative proceeding. You and the Company each waive any right to a jury trial.

③ 30-day opt-out. You may opt out of this Arbitration Agreement by sending written notice to support@riru.ai within 30 days of first agreeing to these Terms, stating that you do not wish to resolve disputes by arbitration. Opting out does not affect any other part of these Terms.

④ Pre-arbitration notice. Before starting arbitration, the initiating party must send the other a written notice describing the claim and the relief sought, and allow 60 days to attempt a good-faith resolution.

⑤ Severability. If any part of this Article is found unenforceable, the remainder continues to apply; if the class-action waiver is found unenforceable as to a particular claim, that claim shall proceed in court.

① The Service is not offered to, and may not be accessed or used by: (a) any person located in, ordinarily resident in, or organized under the laws of a country or territory that is subject to comprehensive sanctions or embargoes administered by the United Nations, the United States (including the U.S. Office of Foreign Assets Control (OFAC)), the European Union, the United Kingdom, or the Republic of Korea — including, without limitation, Cuba, Iran, North Korea, Syria, and the Crimea, so-called Donetsk People's Republic, and so-called Luhansk People's Republic regions of Ukraine; or (b) any person designated on an applicable sanctions or restricted-party list, including the OFAC Specially Designated Nationals (SDN) List.

② You represent and warrant that you are not a person described in Paragraph 1 and that you will not use the Service in violation of any applicable sanctions or export-control laws, or make the Service available to any such person.

③ Accessing or attempting to access the Service from a sanctioned jurisdiction, including by using a VPN, proxy, or other means to conceal your location, is prohibited and constitutes a material breach of these Terms.

④ The Company may restrict, suspend, or terminate access to the Service, without prior notice and without liability, where it reasonably believes this Article has been or may be violated, and refunds may be denied to the extent permitted by applicable law.

• Effective date: July 16, 2026

• Copyright in these Terms belongs to ONE Tool. Unauthorized reproduction, distribution, transmission, or other copyright infringement is strictly prohibited.