Privacy Policy

This Privacy Policy explains how "bkbkb" (bkbkb.net, hereinafter referred to as the "Site") handles personal information of users in connection with the Site and the services provided through it (collectively, the "Service").

1. Personal Information

"Personal Information" means information about a living individual that can identify the specific individual by name, email address, or other description, or that contains an individual identification code, as defined under the Act on the Protection of Personal Information of Japan.

2. Information We Collect

The Site may collect the following information in providing the Service.

  1. Information you provide directly
    1. Name, email address, and message content submitted through contact forms
    2. For the planned member feature: email address, password (stored as a hash), display name, and other optional fields submitted at registration
  2. Information collected automatically from your device or activity
    1. IP address, browser type and language, referrer, URLs of pages viewed, time spent, and access source
    2. Identifiers stored in cookies, local storage, and similar technologies
    3. Device type, OS, screen size, and other environmental information
  3. Information collected through third-party services
    1. Usage information collected via Google Analytics, Google AdSense, and other external services

3. Purpose of Use

We use the collected information for the following purposes.

  1. To provide, maintain, and improve the Service
  2. To respond to inquiries from users
  3. To analyze usage, understand access trends, and improve content
  4. To deliver advertisements and measure their effectiveness
  5. To detect and prevent unauthorized use and respond to violations of the Terms of Service
  6. For the planned member feature: identity verification, session management, providing paid features, and billing
  7. To send important notices and information about the Service
  8. For other purposes incidental to the above

4. Use of Cookies and Similar Technologies

  1. The Site uses cookies and similar technologies (such as local storage) to improve usability, analyze usage, and deliver advertising.
  2. You can refuse cookies through your browser settings. Please note that some features of the Site may not be available if you do so.

5. Analytics Tools

  1. The Site uses "Google Analytics", a web analytics service provided by Google LLC, to understand how the Site is used.
  2. Google Analytics collects information through cookies. The information collected is anonymous and does not identify individuals.
  3. For details on the Google Analytics Terms of Service and its privacy policy, please refer to the Google website.
  4. You can opt out of Google Analytics data collection by installing the Google Analytics opt-out browser add-on or by using other methods provided by Google.

6. Advertising

  1. The Site may use third-party advertising services such as Google AdSense.
  2. Such advertising providers may use information about your access to this Site and other sites (excluding your name, address, email address, and telephone number) to display advertisements tailored to your interests.
  3. For details on Google's use of advertising cookies (including the DoubleClick cookie) and how to opt out, please refer to Google's advertising policies and ad settings page.

7. Provision of Personal Information to Third Parties

  1. We will not provide your personal information to third parties without your prior consent, except in the following cases:
    1. When required by law
    2. When necessary to protect the life, body, or property of a person and it is difficult to obtain the consent of the individual
    3. When particularly necessary to improve public health or to promote the sound growth of children and it is difficult to obtain the consent of the individual
    4. When it is necessary to cooperate with a national or local government agency or its delegate in performing duties prescribed by law
  2. The following cases shall not constitute provision to third parties:
    1. When the handling of personal information is entrusted to a contractor within the scope necessary to achieve the purpose of use
    2. When personal information is provided in connection with a business succession
    3. When personal information is jointly used and the matters required by law are disclosed to or made available to the individual in advance

8. Security Measures

We take reasonable and appropriate measures to prevent the leakage, loss, or damage of the personal information we collect, and otherwise manage personal information securely.

9. Disclosure, Correction, and Deletion

  1. You may request the disclosure, correction, addition, deletion, suspension of use, or suspension of provision to third parties of your personal data held by the Site.
  2. Upon receiving such a request, we will verify your identity and respond within a reasonable period in accordance with applicable laws.
  3. Information that does not constitute personal information, such as history and access logs, is in principle not subject to disclosure.

10. Use by Minors

If you are a minor, please use the Service only after confirming the content of this Policy with a guardian who has reviewed and consented to it.

The Site may contain links to external websites. For the handling of personal information by linked sites, please refer to each site's privacy policy. The Site assumes no responsibility for the content of linked sites.

12. Changes to this Policy

  1. The content of this Policy may be changed without notice to users, except for matters otherwise provided by law or in this Policy.
  2. The revised Privacy Policy will take effect when posted on the Site.

13. Contact

For inquiries regarding this Policy, please contact us via the Site's contact form (under preparation) or the operator's contact information.

Established: December 1, 2020 Last revised: May 23, 2026