Terms of Service

Chapter 1 General Provisions

Article 1 (Scope)

1. These Terms of Service (hereinafter referred to as the “Terms”) establish the rights and obligations between koto (hereinafter referred to as the “Provider”) and all users (hereinafter referred to as “Users”) regarding the use of the web application “Koto” (hereinafter referred to as the “Service”), and apply to any relationship concerning the use of the Service between Users and the Provider.

2. Any individual rules, guidelines, or policies (hereinafter referred to as “Individual Provisions”) separately established by the Provider on the Service shall constitute a part of these Terms. In the event of any conflict between the provisions of these Terms and any Individual Provisions, the Individual Provisions shall take precedence.

Article 2 (Agreement to Terms)

1. Users shall use the Service in accordance with these Terms, and by using the Service, Users are deemed to have given valid and irrevocable consent to these Terms.

2. If a minor uses the Service, they shall obtain the consent of a legal representative (such as a person with parental authority).

Article 3 (Modification of Terms)

1. The Provider may modify these Terms at any time without obtaining the prior consent of Users whenever deemed necessary due to amendments to laws, changes in social conditions, or improvements to the Service.

2. When modifying these Terms, the Provider shall notify Users on the website or application of the Service by the time the modified Terms become effective.

3. If Users continue to use the Service after the effective date of the modified Terms, Users shall be deemed to have given valid and irrevocable consent to the modified Terms.

Chapter 2 Accounts and Usage

Article 4 (Account Registration)

1. A person who wishes to use the Service shall apply for registration according to the method prescribed by the Provider after agreeing to comply with these Terms.

2. The Provider may refuse registration if it determines that any of the following grounds exist, and shall have no obligation to disclose the reason thereof:

   • (1) False information was provided at the time of registration application
   • (2) The applicant has previously been subjected to measures such as suspension of use by the Provider for violation of these Terms
   • (3) The Provider deems the registration inappropriate, such as when the applicant is affiliated with a competitor
   • (4) Other cases where the Provider deems registration unsuitable

Article 5 (Management of Account Information)

1. Users shall manage their account information for the Service (including IDs, passwords, etc.) at their own responsibility.

2. Users shall not allow third parties to use their account information, nor transfer, lend, change the name of, or sell such information.

3. The Provider shall bear no liability for any damages caused by insufficient management of account information, errors in use, or use by third parties, and all responsibility shall be borne by the User.

Article 6 (Usage Fees and Payment Methods)

1. When using a paid plan of the Service, Users shall pay the usage fees separately determined by the Provider using the payment method designated by the Provider.

2. The Provider may change the usage fees by notifying Users in advance.

3. Users may use the features of the Service within the limits specified by their plan.

4. Free plans of the Service are subject to daily usage limits.

Chapter 3 Prohibited Actions and Intellectual Property Rights

Article 7 (Prohibited Actions)

Users shall not engage in any of the following acts when using the Service:

• (1) Acts that violate laws or public order and morals
• (2) Acts related to criminal activities
• (3) Acts that infringe upon copyrights, trademarks, or other intellectual property rights of the Provider, other users, or third parties
• (4) Acts that infringe upon property, privacy, honor, or credit of the Provider, other users, or third parties
• (5) Acts of using the Service for commercial purposes (except where prior consent has been granted by the Provider)
• (6) Acts of unauthorized access or placing an excessive load on the Provider’s service infrastructure
• (7) Acts that may interfere with the operation of the Service
• (8) Acts of reverse engineering, decompiling, or disassembling the Service
• (9) Other acts deemed inappropriate by the Provider

Article 8 (Intellectual Property Rights)

1. All intellectual property rights, including copyrights, patents, trademarks, and know-how relating to the Service and all content provided through the Service, belong to the Provider or third parties who have granted licenses to the Provider.

2. The grant of permission to use the Service under these Terms does not imply a grant of license to use the Provider’s intellectual property rights.

Article 9 (User Inputted Information)

1. Copyrights regarding information uploaded, posted, or transmitted to the Service by Users (hereinafter referred to as “Input Information”) shall be retained by the Users who posted such information.

2. The Provider may use (reproduce, publicly transmit, adapt, etc.) Input Information free of charge within the scope necessary for providing, maintaining, and improving the Service.

3. Users agree not to exercise moral rights of authors regarding Input Information against the Provider or any person who has succeeded to or been licensed rights from the Provider.

Chapter 4 Suspension of Service and Disclaimer

Article 10 (Suspension of Provision of Service)

1. The Provider may suspend or interrupt the provision of all or part of the Service without prior notice to Users if it determines that any of the following reasons exist:

   • (1) When performing maintenance, inspection, or updating of computer systems relating to the Service
   • (2) When provision of the Service becomes difficult due to force majeure such as earthquakes, lightning, fires, or power outages
   • (3) When computers or communication lines are stopped due to accidents
   • (4) Other cases where the Provider deems suspension or interruption necessary

2. The Provider shall bear no liability for any damages incurred by Users as a result of measures taken pursuant to this Article.

Article 11 (Usage Restrictions and Deregistration)

The Provider may, without prior notice, restrict the use of the Service or deregister a User if the User falls under any of the following items:

• (1) Violation of any provision of these Terms
• (2) Discovery of false facts in registration information
• (3) Other cases where the Provider deems use of the Service inappropriate

Article 12 (Disclaimer)

1. The Provider does not warrant, explicitly or implicitly, that the Service is free from factual or legal defects (including safety, reliability, accuracy, completeness, effectiveness, fitness for a particular purpose, security defects, errors, bugs, or rights infringements).

2. The Provider shall not be liable for any damages incurred by Users arising from the Service. However, this disclaimer shall not apply if the contract between the Provider and the User regarding the Service constitutes a consumer contract under the Consumer Contract Act of Japan.

3. Even in cases specified in the proviso of the preceding paragraph, the Provider shall not be liable for any special damages incurred by Users due to default or tort caused by the Provider’s negligence (excluding gross negligence) (including cases where the Provider or User foresaw or could have foreseen the occurrence of damages). Furthermore, compensation for damages incurred by Users due to default or tort caused by the Provider’s negligence (excluding gross negligence) shall be capped at the total amount of usage fees received from the User in the preceding 3 months.

Chapter 5 Miscellaneous Provisions

Article 13 (Handling of Personal Information)

The Provider shall appropriately handle personal information acquired through the use of the Service in accordance with the Provider’s separately established Privacy Policy.

Article 14 (Modification and Termination of Service)

The Provider may change all or part of the contents of the Service or terminate provision thereof due to the Provider’s convenience. If the Provider terminates the Service, it shall notify Users at least 30 days in advance.

Article 15 (Governing Law and Jurisdiction)

1. The interpretation of these Terms shall be governed by the laws of Japan.

2. In the event of any dispute regarding the Service, the Tokyo District Court shall have exclusive agreed jurisdiction of the first instance.

[Established] December 15, 2025