Privacy Policy

This is an English translation of the Japanese original for reference. If the wording differs, the Japanese original prevails.

Introduction

suisui.fan (the “Site”) is a fan site for the streamer Yukiiri Sui (雪入 睡), operated by fans, known as “すい好い” (Suisui).

This Privacy Policy explains how the fans operating the Site (the “Operators”) access, use, and store users' information. It applies to all pages and features of suisui.fan.

Information accessed and purposes

When you use the following features, we access the information described for each feature and use it only for the stated purposes.

Signing in with X

• Information accessed: Your X user ID, username (starting with @), display name, profile image URL, and the date and time you last signed in
• Information not accessed or stored: We do not access your email address or X password. We do not store the X access token received during sign-in
• We request only permission to read account information and posts (users.read and tweet.read). We do not post, follow accounts, or perform similar actions on your behalf
• Purposes: Maintaining your signed-in session, showing your information on My Page, and identifying your posts so that you can remove them from the Site through My Page
• Sharing with X: We do not send your user information from the Site to X. Sign-in takes place on X's screen, and X's handling of information is governed by X's Privacy Policy

You can also use our contact details for questions about the handling of your X account information.

Profiles and personal milestones

• Information accessed: The display name, profile image, header image, and milestone dates, titles, notes, and images you enter on My Page
• For milestone images, we store both the cropped image and the original uploaded image
• Images are served from the Site's content delivery server (cdn.suisui.fan). Image URLs are difficult to guess, but anyone who knows a URL can view its image
• Purpose: Displaying this information to you when you are signed in
• We also store image upload counts to enforce the daily upload limit

Inquiries

• Information accessed: Your email address when you contact us by email, or your X account when you contact us by X direct message, and the contents of your inquiry
• Purposes: Responding to your inquiry and improving the Site. Your email address is used only to reply to you

Importing posts with the hashtag

The Site imports public X posts tagged with “#かっこいいぞすい” and displays them in Memories (stream recaps, including stream thumbnails and images shown when shared on social media), Suista, and timeline milestone pages. Posts by people who have never signed in to the Site may also be imported. The Operators may additionally specify individual posts to import.

• Information accessed: The author's X user ID, username, display name, profile image URL, the post's text and posting date, the number of entries in its edit history, and its images and videos
• Images and videos are copied to and served from the Site's server
• Purpose: Recording streams on the Site together with fans' posts
• Stopping publication: A post's author can sign in with X and remove the post through the “ポスト” (Posts) section of My Page. If a post is not shown there, or you want to request removal without signing in, please contact us
• Removal deletes the text, images, and videos and stops their publication. We retain the post URL, posting date, number of edit-history entries, and the author's X user ID, username, and display name to prevent reimporting the same post and to maintain a removal record

Apple Music integration

This feature creates a playlist in your own Apple Music library from a stream's setlist. Before first use, we display information about the integration for you to review.

YouTube Music integration

Access logs

• Information recorded: The Site's server logs the source IP address, page accessed, date and time, referring page, browser type, and submitted contents (excluding some fields, such as email addresses)
• Purposes: Investigating problems and responding to unauthorized access

Cookies and information stored on your device

• Cookie: We use a cookie (_suisui_session) to keep you signed in. It expires after two weeks. It is issued only on the sign-in page and pages used after signing in, not on other public pages
• Browser localStorage: Your light or dark theme setting, Home slideshow autoplay setting and the slide shown when you paused it (discarded after 7 days), the time you acknowledged the notice about older browsers, and your Apple Music user token when connected (stored by Apple's MusicKit)
• Browser localStorage: The display language you explicitly select in the menu is saved. Japanese is the default when no preference is saved. Clearing your browser’s site data also removes this preference
• Browser sessionStorage: Whether a celebration effect has been shown
• The Site itself does not use cookies for advertising or analytics

Third-party disclosure and use of external services

Google user data is subject to the restrictions in Use and sharing of Google user data. General consent does not permit use or disclosure beyond those restrictions.

• Users' personal data is handled within the purposes and processing necessary for each feature described above. We do not sell personal data or disclose it to third parties for advertising or other purposes unrelated to providing the Site's functionality
• We do not disclose data under an opt-out arrangement in which data is shared unless you object
• We use external services for servers, databases, networking, content delivery, and receiving email. Processing through these services is limited to what is necessary to provide the Site's functionality or respond to inquiries. There is no process that automatically forwards data obtained through the Google integration to inquiry emails or external notifications
• If disclosure is required by law, we disclose only the information necessary to fulfill that legal obligation

Retention and deletion

• Deleted when you delete your account: Your account, profile and header images, personal milestones and their images, Apple Music authorization information, and playlist creation records
• Images are deleted from storage, but cached copies may remain available to anyone who knows their URLs for up to approximately one year
• Retained after account deletion: Imported posts (which you can remove through My Page before deleting your account), playlists created in your own Apple Music library, and server logs
• YouTube Music tokens and playlist records held on the Site follow the retention and deletion rules in the YouTube Music integration section above and are also deleted when you delete your account. Playlists already created on YouTube remain
• SQL database backups: YouTube Music tokens and playlist records are excluded. Other data may remain in backups for up to 90 days after you delete your account and is then deleted

Security measures

• Music service authorization information (user tokens) is stored encrypted
• Only administrators registered by the Operators can access the administration area. Their permissions are divided by role
• Our production servers, networking, and content delivery use Amazon Web Services (AWS), and we also manage access permissions on the Site
• Handling outside Japan: We use Proton, an email service provided by a Swiss company, to receive inquiries. We take security measures with an understanding of Switzerland's personal data protection system

Requests for access, correction, or restriction of use

Please contact us to request notification of the purposes of use, access to your information, correction, addition or deletion, restriction or termination of use, deletion of data, termination of third-party disclosure, or access to records of third-party disclosure. After verifying your identity, we will respond without undue delay.

For minors

If you are a minor, please obtain your parent or guardian's consent before using the Site.

Contact details

Please use either of the following channels for questions about this policy, complaints or concerns about our handling of information, or the requests described above.

• Email: suisuifan@pm.me
• X direct message: @suisui_fansite

Changes

We may revise this policy as laws or the Site's features change. Revisions and their dates will be announced on this page. We will review this policy in connection with the implementation of the amendments to Japan's Act on the Protection of Personal Information promulgated in 2026.

Established: September 13, 2026.
Revision history: September 13, 2026 (removal of the contact form); September 14, 2026 (removal of stored music service preferences for setlists; addition of YouTube Music integration, retention, and deletion rules); September 16, 2026 (clarification of restrictions on the use and transfer of Google user data, processing by external services, and Apple Music retention; addition of an English reference translation); September 19, 2026 (replacement of the in-preparation notice with a description of service availability; end of YouTube channel retrieval following removal of the confirmation screen; change of playlist names; disclosure of disaster-recovery snapshots); September 28, 2026 (disclosure of the language preference explicitly selected in the menu and kept in localStorage).