Terms of Service

Last updated: June 12, 2026

Callirrhoe Inc. (hereinafter “we,” “us,” or “our”) establishes the terms of use for the mobile application “Hanabi Bloom” (the “App”) as these Terms of Service (the “Terms”). Please be sure to read these Terms before using the App.

Article 1 Application of These Terms

1. These Terms apply to all users who use the App (the “Users”).
2. By downloading or using the App, the User is deemed to have agreed to these Terms.
3. In addition to these Terms, the Privacy Policy and any individual terms separately established by us also constitute part of these Terms.

Article 2 Conditions of Use

1. The App is distributed through Google Play and the Apple App Store. In using the App, you must also comply with the terms of each platform.
2. Minors who use the App should do so with the consent of a parent or guardian.
3. The communication devices, software, communication lines, etc. necessary to use the App shall be prepared at the User’s own responsibility and expense.

Article 3 Account and User Information

1. The App can, in principle, be used without account registration.
2. If a User optionally sets a profile display name, the handling of such information shall be governed by the Privacy Policy.
3. The User bears responsibility for managing their own device and account information.
4. If a User stops using the App, uninstalling the App is deemed to constitute withdrawal. Procedures for deleting data shall follow our Privacy Policy.

Article 4 Prohibited Conduct

In using the App, Users must not engage in any of the following acts.

1. Acts that violate laws or public order and morals
2. Acts related to criminal activity
3. Acts that interfere with the operation of the App
4. Reverse engineering, decompiling, modifying, or analyzing the App
5. Obtaining in-app purchases by fraudulent means, or unauthorized access
6. Use of cheat tools, modified apps, automation tools, etc.
7. Acts that cause disadvantage, damage, or discomfort to other Users or third parties
8. Acts that infringe the intellectual property rights, privacy rights, honor, or other rights of other Users or third parties
9. Exchanging the App’s data, items, in-game currency, etc. for cash, property, or other economic benefits (real-money trading)
10. Acts that place an excessive load on our servers or network
11. Using a discovered vulnerability of the App for any purpose other than reporting it to us
12. Any other act that we deem inappropriate

Article 5 In-App Purchases

1. The App includes in-app purchase features for purchasing items and in-game currency. It may also include auto-renewing subscriptions such as a monthly membership.
2. In-app purchases and subscriptions are made through the payment systems of Google Play or the Apple App Store and are subject to the terms of each platform.
3. Unless cancelled, subscriptions are automatically renewed and charged at the prescribed intervals through each platform. The price, renewal period, and benefits of a subscription are displayed on the purchase screen.
4. Subscriptions can be cancelled at any time from the subscription management screen of Google Play or the Apple App Store. Even after cancellation, you can continue to use the service until the end of the applicable billing period. Refunds for periods already elapsed or used are, in principle, not provided.
5. Purchased items and in-game currency can only be used within the App and cannot be refunded in cash or exchanged for other services.
6. Returns and cancellations after purchase are, in principle, not accepted. However, for issues such as payment processing errors or items not being reflected, we will respond in accordance with the refund policy of each platform.
7. When a minor makes an in-app purchase or subscription, they must obtain the consent of a parent or guardian. Charges made without the consent of a guardian will be handled in accordance with the terms of each platform.
8. For details on in-app purchases and subscriptions, please refer to the Notation Based on the Act on Specified Commercial Transactions.
9. If we offer probability-based sales such as gacha, we will display the offering probabilities on each gacha’s sales screen. Such probabilities are guaranteed to match the probabilities as implemented.
10. We do not offer “complete gacha” (a mechanism in which collecting a specific combination of items allows you to obtain another item).

Article 6 Advertising

1. The App serves advertisements through Google AdMob and others.
2. The ads served may be personalized based on the User’s interests. For ad personalization settings, please refer to the Privacy Policy.
3. The App provides rewarded ads that allow Users to earn rewards by voluntarily watching them. Viewing is entirely optional.
4. If you subscribe to the monthly membership, no ads are displayed within the App.
5. Responsibility for advertisers’ products and services rests with the respective advertisers, and we bear no responsibility for them.

Article 7 Intellectual Property Rights

1. All copyrights, trademark rights, patent rights, design rights, and other intellectual property rights related to the App belong to us or to the third parties holding legitimate rights.
2. Except to the extent expressly permitted by these Terms, Users may not reproduce, distribute, modify, disseminate, publicly transmit, reprint, adapt, translate, create derivative works of, or otherwise use all or part of the App.
3. Notwithstanding the preceding paragraph, we permit Users to post, distribute, and monetize footage of App gameplay (videos, live streams, screenshots, etc.) and secondary content that adds commentary, comments, editing, etc. to such footage, without prior permission, whether by individuals or corporations and whether for profit or non-profit. Introductions through cosplay and the like are similarly welcome.
4. The permission in the preceding paragraph does not extend to, and we prohibit, the following uses.
   1. Use in a violent, sexual, discriminatory, or otherwise socially inappropriate context
   2. Use that violates laws or promotes illegal acts
   3. Use that misleads third parties into believing it is official, authorized, or affiliated with us
   4. Use that extracts the App’s audio, images, programs, or other materials themselves and distributes or sells them as standalone items beyond the scope of introducing gameplay
5. Users shall make use under the preceding two paragraphs at their own responsibility, and we bear no responsibility whatsoever for any damage or dispute arising to the User or any third party in connection with such use.

Article 8 Disclaimer

1. We make no warranties whatsoever, whether express or implied, regarding the content, functions, quality, accuracy, safety, suitability, currency, etc. of the App.
2. We bear no responsibility for damage to a User or third party arising from the use of or inability to use the App, except where we have acted with intent or gross negligence.
3. We bear no responsibility for damage arising from defects in the App, communication failures, maintenance, failures of external services, etc.
4. We bear no responsibility for disputes arising between Users or with third parties.

Article 9 Limitation of Liability

1. Even where a User can claim damages from us due to reasons attributable to us, the maximum amount we will compensate shall not exceed the amount the User paid to us through in-app purchases during the most recent one year.
2. The provisions of this Article do not apply to damage caused by our intent or gross negligence.

Article 10 Changes, Suspension, and Termination of Service

1. We may change the content, functions, specifications, etc. of the App without prior notice to Users.
2. We may temporarily suspend the provision of the App due to system maintenance, failure response, or other unavoidable reasons.
3. We may terminate the provision of the App with a reasonable advance notice period.
4. If unused in-app currency or items are lost due to the termination of the App, we will not provide refunds or other compensation. However, this does not apply where required by the Payment Services Act or other laws.

Article 11 Changes to These Terms

1. When it becomes necessary to change these Terms, we may change them without the individual consent of Users only in the following cases (Article 548-4, Paragraph 1 of the Civil Code).
   1. When the change conforms to the general interests of Users
   2. When the change does not contradict the purpose of these Terms and is reasonable in light of the necessity of the change, the appropriateness of the content after the change, and other circumstances related to the change
2. When changing these Terms based on the preceding paragraph, we will set an effective date and announce, within the App or on our website, the fact of the change, the content after the change, and the effective date, a reasonable period before the effective date.
3. The amended Terms take effect from the effective date set by us.

Article 12 Governing Law and Jurisdiction

1. The interpretation and application of these Terms shall be governed by Japanese law.
2. In the event of a dispute between us and a User in connection with these Terms or the App, the Sapporo District Court shall be the court of exclusive agreed jurisdiction for the first instance.

Article 13 Contact Us

For questions about these Terms or inquiries regarding the App, please contact us at the following.

info@hanabibloom.com

* For bug reports and support inquiries, you can also contact us via “Settings → Contact” within the App or through the contact form on this website.

Article 14 Severability

Even if any provision of these Terms is determined to be invalid or unenforceable due to law, precedent, or other reasons, the validity of the other provisions of these Terms shall not be affected, and we and the User shall negotiate in good faith to achieve valid content that most closely reflects the intent of the provision determined to be invalid or unenforceable.