Korean Jump: Terms of Service

Introduction

These Terms of Service (hereinafter referred to as the “Terms“) set forth the terms and conditions for the use of the Korean language learning application “Korean Jump” (hereinafter referred to as the “Service“), which is planned and operated by Mitsutomi LLC (hereinafter referred to as the “Company“).

All users of the Service (hereinafter referred to as “Users“) must carefully read the entire text of these Terms and agree to all provisions herein before commencing use of the Service. Any User who does not agree to these Terms is not authorized to use the Service in any capacity.

Article 1 (General Provisions and Scope)

  1. These Terms constitute a binding agreement between the Company and the User regarding the use of the Service. Any rules, guidelines, or precautions separately presented by the Company within the Service or on the Company’s website (hereinafter referred to as “Sub-rules“) shall form an integral part of these Terms. In the event of any conflict between these Terms and the Sub-rules, these Terms shall take precedence.

  2. Regardless of age or environment, a User is deemed to have agreed to all provisions of these Terms at the moment they begin using the Service (including, but not limited to, the installation of the application).

Article 2 (Definitions)

The following terms used in these Terms shall have the meanings defined below:

  • The Service: The collective term for contents, functions, and all accompanying services provided through the “Korean Jump” application.

  • Content: All information constituting or accessible through the Service, including words, audio, text, images, videos, explanations, software, programs, and code.

  • Paid Services: Specific functions or collections of content for which the User may acquire usage rights by paying a fee prescribed by the Company.

  • Purchase: The act of a User paying the prescribed fee to the Company. This signifies the granting of a non-transferable, non-exclusive license to use the relevant Paid Service and does not imply the transfer of ownership or any other proprietary rights.

  • User Data: Electronic records such as learning history, progress, and settings saved on the server during the User’s use of the Service.

Article 3 (User Responsibilities)

  1. Users shall, at their own expense and responsibility, prepare and appropriately maintain the smartphones, communication equipment, software, and internet connection environments necessary to use the Service.

  2. Users shall take necessary measures, such as backups, regarding their own User Data. The Company assumes no obligation regarding the storage, backup, or restoration of User Data.

Article 4 (Account Management)

  1. Users shall strictly manage their account information necessary for using the Service at their own responsibility to prevent leakage to third parties.

  2. Lending, transferring, selling, sharing, or any other act of allowing a third party to use the account is strictly prohibited for any reason.

  3. All actions performed on the Service using a User’s account shall be deemed actions by the User themselves. The User shall bear all payment obligations and other responsibilities arising from such actions. Except in cases of intentional misconduct or gross negligence by the Company, the Company shall not be liable for any damages incurred by the User due to unauthorized use of their account by a third party.

Article 5 (Purchase and Payment)

  1. If a User wishes to purchase Paid Services, they shall pay the usage fee prescribed by the Company using the payment methods provided by the settlement service providers designated by the Company.

  2. Except as otherwise required by applicable laws, the Company will not provide any refunds, exchanges, or reimbursements for usage fees once paid by a User for any reason (including, but not limited to, Service defects, User error, or suspension of use due to violations of these Terms).

  3. Once the purchase procedure for a Paid Service is completed, the transaction is finalized and cannot be cancelled.

Article 6 (Intellectual Property Rights)

Copyrights, trademarks, and all other intellectual property rights related to the Service and all Content belong exclusively to the Company or the legitimate rights holders who have granted licenses to the Company. These Terms do not grant the User any transfer of rights or licenses (except for the scope explicitly stated in these Terms).

Article 7 (Prohibited Acts)

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

  1. Acts that violate these Terms, laws, or regulations, criminal acts, or acts that encourage them.

  2. Acts that infringe upon the intellectual property rights, privacy rights, portrait rights, reputation, credit, or any other legal rights of the Company or third parties.

  3. Reproducing, modifying, adapting, reverse engineering, decompiling, disassembling, data mining, or scraping the Content, in whole or in part, beyond the intended use of the Service.

  4. Sharing an account among multiple people or allowing multiple people to use a single purchased Paid Service.

  5. Placing an excessive load on the server or network, or attempting unauthorized access.

  6. Intentionally exploiting defects or bugs in the Service.

  7. Any act that obstructs the operation of the Service or damages its credibility.

  8. Other acts that the Company reasonably deems inappropriate based on socially accepted standards.

Article 8 (Measures for Violations)

  1. If the Company reasonably determines that a User has violated or is likely to violate any of the prohibited acts in the preceding article, the Company may take the following measures without prior notice:

    • Temporary suspension of all or part of the Service.

    • Permanent suspension of the account and deletion of registration.

  2. The Company shall not be liable for any damages incurred by the User due to measures taken based on this article and will not refund any usage fees.

Article 9 (Withdrawal and Termination)

  1. Users may withdraw from the Service at any time through the procedures prescribed by the Company.

  2. Upon withdrawal, the User shall immediately and permanently forfeit all rights regarding the Service. This includes the right to use purchased Paid Services, and no use or refund after withdrawal shall be permitted. Furthermore, all User Data will be deleted and cannot be restored. The User agrees to this in advance.

Article 10 (Modification, Suspension, and Termination of the Service)

  1. The Company may, at its sole discretion, modify, suspend, or permanently terminate all or part of the Service at any time.

  2. In the event of permanent termination, the Company will endeavor to notify Users in advance within a reasonable period, except in cases of emergency or unavoidable circumstances.

  3. The Company shall not be liable for any disadvantage or damage (including the inability to use purchased Paid Services) incurred by Users due to the modification, suspension, or termination of the Service based on this article, and will not provide any monetary compensation.

Article 11 (Disclaimer of Warranties and Limitation of Liability)

  1. The Service is provided on an “AS IS” and “AS AVAILABLE” basis. The Company makes no warranties, express or implied, including but not limited to:

    • No Guarantee of Learning Results: The Company does not guarantee that the Service will improve the User’s Korean language proficiency, ensure success in specific exams, or achieve any other specific effects or purposes.

    • No Guarantee of Accuracy: The Company does not guarantee the completeness, accuracy, timeliness, reliability, or usefulness of the Content (translations, pronunciation, explanations, etc.).

    • No Guarantee of Operation: The Company does not guarantee that the Service will operate correctly on all devices, OS versions, browsers, or communication environments. The User assumes the risk of malfunctions caused by future OS updates.

    • No Guarantee of Data Integrity: The Company does not guarantee that User Data will not be lost, damaged, or altered.

    • No Guarantee of Absence of Defects: The Company does not guarantee that the Service will be free from interruptions, errors, bugs, security flaws, viruses, or other harmful components.

  2. The Company shall not be liable for any damages arising from the use of the Service, except in cases of intentional misconduct or gross negligence by the Company.

  3. If these Terms fall under a “Consumer Contract” as defined by the Consumer Contract Act of Japan, the provisions that completely exempt the Company’s liability shall not apply. In such cases, the Company’s liability for damages caused by its ordinary negligence shall be limited to direct and ordinary damages actually incurred (excluding damages arising from special circumstances, whether or not foreseen), and the maximum amount of compensation shall be limited to the purchase price of the Paid Service that directly caused the damage.

Article 12 (Business Transfer)

In the event the Company transfers the business related to the Service to a third party (including business transfer, company split, or any other form of transfer), the Company may transfer its status under these Terms, rights and obligations based on these Terms, and User registration information and other data to the transferee. The User shall be deemed to have consented to such transfer in advance under this article.

Article 13 (Severability)

Even if any provision of these Terms or a part thereof is determined to be invalid or unenforceable under laws or regulations, the remaining portions shall continue to be in full force and effect. The Company and the User shall endeavor to modify the invalid provision to make it legal and enforceable to the extent necessary to achieve the original intent and economic effect of such provision.

Article 14 (Governing Law and Jurisdiction)

  1. These Terms shall be governed by and construed in accordance with the laws of Japan.

  2. Any and all disputes arising out of or in connection with these Terms or the Service shall be subject to the exclusive jurisdiction of the Tokyo District Court as the court of first instance. The User hereby consents to this jurisdiction and waives any objection to such venue.

Supplementary Provisions Established and Effective: April 1, 2026

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