Privacy Policy

Effective date: August 6, 2026
Last updated: August 6, 2026

Sizu dev (“we”) respects the privacy of its users and handles user information appropriately, in compliance with the Act on the Protection of Personal Information of Japan and other applicable laws. This Privacy Policy (this “Policy”) sets out how information is obtained, used, provided, and managed on the website we operate and in the apps and services we provide, as well as the rights of our users.

1. Scope

This Policy applies to browsing this website (Sizu dev) and to the use of our contact form.

Each app and service we provide has handling specific to it, so we set out a separate privacy policy for each service. For the use of an individual app or service, the privacy policy of that service applies first, and this Policy applies to matters not covered there.

• IRO UTSUSHI Privacy Policy
• Taremimi Club Privacy Policy (in Japanese; it also covers the iPhone and iPad app “Taremimi Connect”)
• Irodori ai Privacy Policy (in Japanese)

2. Information we obtain

In relation to this website, we may obtain the following information.

1. Information you provide
   • What you enter in the contact form (the content of your inquiry, your contact details if you provide them, your name or nickname, and similar)
2. Information recorded automatically when the service is used
   • Information recorded automatically by our hosting platform (Cloudflare Pages), such as IP address, date and time of access, requested URL, browser information (User-Agent), and referring URL

This website does not use analytics tools or advertising, and we do not independently collect browsing histories.

3. Purposes of use

We use the information we obtain for the following purposes.

1. To answer inquiries and to keep a record of how they were handled
2. To provide, maintain, and improve this website and the apps and services we provide
3. To identify and fix defects, ensure security, and detect improper use
4. To contact users, including about important notices
5. To fulfil obligations under applicable law and to respond to disputes

4. Use of external services and provision to third parties

This website uses the following external services to the extent necessary to provide it. As a result, user information may be transmitted to, or stored by, those providers. The handling of information by each provider is governed by that company’s terms of use and privacy policy.

• Cloudflare, Inc. (Cloudflare Pages: the hosting platform for this website)
• Google LLC (Google Forms: receiving inquiries)

We do not provide personal information to third parties except in the following cases.

1. Where the user has consented
2. Where required by law
3. Where necessary to protect the life, body, or property of a person and it is difficult to obtain the consent of the individual
4. Where specially necessary to improve public health or promote the sound development of children and it is difficult to obtain the consent of the individual
5. Where cooperation with a national agency, a local government, or a similar body is necessary and obtaining the consent of the individual would risk impeding the performance of those duties

5. Cookies and similar technologies

We do not use cookies or local storage on this website. However, if you navigate to a page of an external service (such as the contact form), cookies and similar technologies may be used in accordance with the terms of that service.

6. Security measures

We take the necessary and appropriate security measures to prevent leakage, loss, damage, unauthorized access, and similar risks affecting the information we obtain.

• Management of access rights
• Encryption of communications
• Selection of the external services we use and management of their settings
• Maintaining a structure for responding to incidents

7. Retention period and deletion

• The content of an inquiry and the accompanying contact details are retained after the matter is closed, for as long as necessary to handle similar inquiries and to keep records. If you would like them deleted, please contact us through the contact point listed at the end of this Policy.
• The retention period and handling of information recorded automatically by our hosting platform are governed by the rules of that provider.

8. Use by minors

The apps and services we provide include ones that children can enjoy. If a minor uses a feature that involves providing personal information (such as the contact form), please do so with the consent of a parent or other legal guardian.

9. Your rights

Under applicable law, you may request the disclosure, correction, addition, deletion, suspension of use, erasure, or suspension of provision to third parties of your personal information. If you wish to do so, please contact us through the contact point listed at the end of this Policy. After verifying your identity, we will respond within a reasonable period in accordance with the law.

10. Transfers outside Japan

In connection with the external services described in section 4, we may transfer user information outside Japan or handle it outside Japan. The destinations may include the United States and other data processing locations designated by each provider. In accordance with applicable law, we require appropriate security measures of those providers and exercise the necessary and appropriate supervision over them.

11. Changes to this Policy

We may revise this Policy in response to changes in the law, changes to our services, and similar circumstances. If we make a significant change, we will announce it on this website.

12. Governing law and jurisdiction

This Policy is governed by the laws of Japan. In the event of a dispute relating to this Policy, the Osaka District Court shall have exclusive jurisdiction as the court of first instance.

13. Contact point

For inquiries about this Policy or about the handling of personal information, please use the form on our contact page.

Operator: Sizu dev