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HYAKKI ONSEN

Terms of Service

Date of Establishment: July 12, 2026
Last Revised: September 2, 2026

These Terms of Service (the “Terms”) set forth the conditions for using the smartphone game app “Hyakki Onsen” (the “App”) provided by STUDIO-GENNAI (the “Operator”). By downloading or using the App, users are deemed to have agreed to these Terms. The handling of user information is governed by the separately established Privacy Policy (https://studio-gennai.com/hyakki-onsen/privacy-policy).

This English version is provided for convenience. If there is any inconsistency between this English version and the Japanese version, the Japanese version shall prevail.

Article 1 (Application)

  1. These Terms apply to all relationships between the Operator and users concerning the use of the App.
  2. Notices and other information posted by the Operator within the App or on store pages form part of these Terms.
  3. The terms of use of the App Store or Google Play also apply to the use of the App.

Article 2 (Conditions of Use)

  1. The App may be downloaded and used free of charge. Some content may be provided for a fee.
  2. Minors must obtain the consent of a parent, guardian, or other legal representative before using the App or purchasing paid content.
  3. Users are responsible for the device, network environment, and communication fees required to use the App.

Article 3 (Intellectual Property Rights)

  1. Copyrights and all other intellectual property rights relating to the App and all content included in the App, including images, text, audio, programs, and other content, belong to the Operator or legitimate third-party rights holders.
  2. The Operator grants users a non-exclusive, non-transferable, and non-sublicensable license to use the App for private purposes. Individuals may post gameplay videos or screenshots on social media and similar services for private purposes.
  3. Users may not reproduce, modify, distribute, sell, or otherwise use the content of the App beyond the scope described above.

Article 4 (In-App Purchases)

Paid content is purchased through the App Store or Google Play. Payment processing, price display, refunds, and management of purchase history follow the rules of the applicable store.

Paid content offered in the App is currently sold as one-time purchases. Purchased content may be restorable through the App’s “Restore Purchases” function when the same store account is used and the applicable store retains the purchase history.

Content may not be restorable due to a device change, a change of store account, changes to store specifications, termination of the App, or other circumstances.

Refunds for paid content are governed by the refund policy of the applicable store. The Operator cannot independently issue refunds.

Article 5 (Advertising)

  1. The App includes rewarded ads that are played only when the user chooses to watch them.
  2. Advertising content is provided by advertising providers, and the Operator is not responsible for the services or other offerings promoted in those advertisements.

Article 6 (Save Data)

  1. App save data is stored on the user’s device.
  2. Depending on the device and OS settings, save data may be backed up through backup functions provided by the operating system, such as iCloud Backup on iOS and Google Backup on Android.
  3. If save data is lost due to a device change, initialization, app deletion, or other reason, the Operator is not obligated to restore the data. Purchased paid content may nevertheless be restored as described in the preceding article.

Article 7 (Prohibited Activities)

Users must not engage in any of the following activities when using the App:

  1. Activities that violate laws, public order, or accepted standards of decency.
  2. Analyzing the App, including reverse engineering, decompiling, or disassembling, or modifying, reproducing, or making secondary use of the App.
  3. Tampering with game data through unauthorized means or using cheat tools or similar tools.
  4. Interfering with the operation of the App.
  5. Infringing the intellectual property rights, privacy, or other rights of the Operator or third parties.
  6. Using the App for commercial purposes, except where separately permitted by the Operator.
  7. Any other activity that the Operator reasonably deems inappropriate.

Article 8 (Changes, Interruption, and Termination of the Service)

  1. The Operator may change all or part of the App’s content, or interrupt or terminate its provision, without prior notice to users.
  2. If the Operator terminates provision of the App, it will endeavor to notify users in advance within the App or on a store page with a reasonable period of notice.
  3. If the Operator terminates the Service in a way that substantially affects paid content already purchased, the Operator will endeavor to notify users in advance within the App or on a store page with a reasonable period of notice, except where required by law or in an emergency.
  4. The Operator will be liable for damages resulting from changes, interruption, or termination under the preceding paragraphs in accordance with Article 9 and other applicable laws.

Article 9 (Disclaimer)

The Operator does not warrant that the App is free of defects, errors, or other issues, or that it is fit for any particular purpose.

If a user suffers damage due to a cause attributable to the Operator, the Operator will be liable for ordinary and direct damage caused intentionally or negligently by the Operator.

Where the Operator is liable due to ordinary negligence, the amount of damages is limited to the amount paid by the relevant user for the App during the 12 months preceding the occurrence of the damage. This limitation does not apply where the Operator acted intentionally or with gross negligence, or where limitation of liability is not permitted by law.

This Article does not prevent the application of the Consumer Contract Act or other mandatory laws.

Article 10 (Changes to These Terms)

  1. The Operator may change these Terms when necessary in accordance with Article 548-4 of the Civil Code of Japan.
  2. When changing these Terms, the Operator will notify users in advance of the revised content and effective date within the App or on a store page.
  3. If a user uses the App after the effective date, the user is deemed to have agreed to the revised Terms.

Article 11 (Governing Law and Jurisdiction)

  1. These Terms are governed by and construed in accordance with the laws of Japan.
  2. Any dispute between the Operator and a user concerning the App shall be subject to the exclusive jurisdiction of the district court or summary court having jurisdiction over the Operator’s address as the court of first instance, unless otherwise provided by applicable law.

Article 12 (Contact)

For inquiries regarding these Terms, please contact:

  • Developer: STUDIO-GENNAI
  • Contact: studio.gennai1@gmail.com

End.