Through X authentication, the service may collect X user ID, username, display name, and profile image URL.

The service collects book information, themes, comments, messages, ratings, and inquiry details submitted by users.

Technical data such as access logs, IP address, and User-Agent may be collected for abuse prevention, troubleshooting, and security.

To create, display, exchange, and publish book gifts.

For abuse prevention, quality improvement, troubleshooting, and inquiry responses.

For advertising and affiliate display, usage analytics, and service improvement.

If a user chooses anonymous exchange, X account information is not displayed to the partner or on public pages.

Even after anonymization, X user IDs and similar information may be retained by the operator for authentication management, abuse prevention, and inquiry handling.

X display information attached to a published gift can be hidden later through service features.

The service may use cookies or similar technology to maintain login state, security, advertising, and analytics.

Information may be sent to external services such as X, ISBNdb, Cloudflare, Cloudflare Turnstile, Amazon, and Google AdSense, in accordance with each service's policy.

Advertising features may be limited if cookie consent is not granted.

Submitted content and account information are retained for as long as needed for service operation.

Access logs, affiliate click logs, and submission diagnostic logs may be retained for legal compliance, abuse prevention, and troubleshooting.

Affiliate click logs are typically deleted after 180 days, and submission diagnostic logs after 30 days, except where retention is required for incident investigation, rights enforcement, or legal compliance.

If you wish to request disclosure, correction, deletion, non-public status, or suspension of use of your information, please contact us via the contact form.

We will respond within reasonable scope after verifying your identity and the relevant data.