Local content preview • Jul 28, 2026

Data and Privacy Policy

ver. 1.0 Last Updated: October 15, 2023

This policy describes the processing necessary for operating the Classii.mu

Information we acquire

In providing the Classii.mu service, we need to process information about users. The type of information we acquire varies depending on how a user uses our services.

Actions and contributions by users

Information and content provided by users.

When you use the Classii.mu service, you submit account registration information and content to Classii.mu, and in doing so, we acquire this information.

Registration information

These are information you provide when creating an account on Classii.mu.

  • Classii.mu ID
  • e-mail address
  • Handle name
  • Short bio
  • Residence
  • language
  • Avatar image

Contents

At Classii.mu, you can post and publish reviews and video information about content.

Networks and connections

At Classii.mu, you can follow other users, 'like' your favorite artists or content, and bookmark them. Classii.mu may use this information to enhance the quality of the service experience. For example, by analyzing user preferences to recommend content.

Device Information

To enhance the quality of the Classii.mu service, we collect and utilize information about the devices our users use. The information obtained by our company from devices includes:

Device Characteristics

Operating system, hardware and software versions, browser type

Network and Connection Information

Internet service provider name, language, timezone, IP address

Cookie data stored on the user's device (such as cookie IDs and settings). For more details on how we use cookies, please refer to the Cookie Policy.

Purpose of Information Collection

To provide and support the Classii service, we use the information we hold as described below. The specific purposes for which we use the information we hold are as follows.

Service Provision, Personalization, and Improvement

We use the information we hold for personalizing functions and content (adjusting the priority of displayed content, prioritizing content based on language or residence, etc.). Specific purposes are explained below.

Product Research and Development

For the purpose of developing, testing, and improving our products, we use the information we hold to conduct surveys, implement research, test new products or features, and troubleshoot issues.

Advertising and Other Sponsored Content

To select and personalize advertisements and sponsored content, we use user attribute information that we hold. However, as of now, we do not use information other than registered language and residence.

Business Services such as Effectiveness Measurement and Analysis

For the purpose of measuring the effectiveness of advertisements within Classii's service, we obtain information about the frequency of ad delivery to users, user responses (clicks, etc.), and provide this information to sponsors. However, the information provided does not allow the identification of individuals.

Promotion of Safety, Security, and Protection

We use the information we hold for the authentication of accounts and activities, addressing malicious activities, detecting and preventing issues such as spam, maintaining the security of our products, and promoting safety and security both internally and externally. For example, we investigate suspicious activities and violations of our terms or policies.

Communication with Users

We periodically deliver information about the operation of important services, such as the release of new features, revisions to terms or policies, requests for cooperation in surveys, improvements to features, issue detection, service maintenance, and significant updates to content, to the registered email addresses of users. We also use this information to respond to inquiries from users.

Profiling

To recommend content that users are likely to be interested in, we profile user preferences based on the history of activities related to content, such as "likes" or bookmarks. Using machine learning technology, we measure the similarity of content and recommend content based on the tendencies of the set of content that users have reacted to.

However, at present, the "content recommendation feature based on profiling" has not been implemented in Classii.mu. Profiling-based content recommendations are positioned as auxiliary functions, and the main selection of content is brought about by users themselves through reactions (likes, follows, bookmarks).

Methods of Information Sharing

User information is shared with others through the following methods.

Sharing on the Classii.mu Service

Display on the Site

Among the registration information that users have provided, information such as Classii.mu ID, display name, short bio, posted video information, review information, bookmarks, likes, and information about who is being followed can be viewed by all site visitors (including users not logged into Classii.mu).

In the Event of Service Transfer

If all or part of the Classii.mu service or its assets are transferred or assigned, user information may also be transferred accordingly.

Advertisers

In Classii.mu, we provide advertisers with reports on the type of people who have seen ads and the effectiveness of the ads. However, we do not share information that could identify users (such as user names or email addresses leading to contact or identification). We obtain information such as the frequency of ad delivery to users and user responses (clicks) and provide it to sponsors.

Use of Google Analytics

Classii.mu uses Google Analytics for the collection and analysis of access logs. Google Analytics uses cookies to collect logs without including information that identifies individuals. This website has settings to enable all extended measurement features of Google Analytics. The collected logs are managed based on Google's privacy policy. For information about Google Analytics, Google's privacy policy, and the extended measurement features of Google Analytics, please refer to the following:

If you wish to opt-out of the collection and analysis of access logs by Google Analytics, please refer to the following website: http://tools.google.com/dlpage/gaoptout

In situations mentioned under "Compliance with Legal Requests, Prevention of Harm," we may share information with law enforcement agencies or respond to legal requests.

How Users Can Manage or Delete Their Information

At Classii.mu, users can register, edit, delete, or download their information, including registration details (account name, display name, email address, short bio, residence, language, avatar image), Likes, follows, bookmarks, reviews, and videos.

  • Registration information is managed in the settings page.
  • Likes, follows, and bookmarks can be registered or removed by accessing the respective content page.
  • Reviews can be made private, public again, or deleted from the review list or respective content page.
  • Account deletion can be done anytime from the settings page.
  • Once deleted, information cannot be recovered.
  • Video information is shared with other users immediately upon posting and becomes collaboratively editable, so once public, it cannot be deleted.
  • For cookie management, refer to the Cookie Policy.
  • Additionally, unnecessary data will be deleted by us when no longer needed for the operation of Classii.mu services.

Data Portability

  • Registration information can be downloaded as machine-readable data from the settings page.
  • Reviews submitted by users can be downloaded as machine-readable data from the settings page.
  • "Likes," follows, and bookmarks are represented as encrypted identifiers for the subject (content or other users). As using this data outside Classii.mu's system is meaningless, a download service is not provided.

Classii.mu, in the following situations, will access, retain, and share user information:

  • When Classii.mu reasonably determines that it is required by law to respond to legal requests (such as search warrants, court orders, subpoenas). This includes responding to legal requests from jurisdictions outside Japan, where Classii.mu has an obligation to respond according to the laws of that jurisdiction, and when Classii.mu reasonably believes that its response is required by international standards and may affect users in that jurisdiction.
  • To detect, prevent, and address fraudulent activities, unauthorized use of products, violations of Classii.mu's terms or policies, and other malicious or unlawful activities. This is done to protect Classii.mu (rights, property, products), users, or to prevent harm to life or imminent bodily harm, or as part of an investigation or inquiry from regulatory authorities. This may include situations where Classii.mu sincerely believes that it is necessary to protect its rights, property, or products, and to prevent harm or liability.

Information received by Classii.mu about users may be accessed and retained for longer than the usual period if it is the subject of a legal request or obligation, part of an investigation into suspected violations of Classii.mu's terms or policies, or if it is necessary to prevent harm. Additionally, information from accounts suspended for terms of service violations may be retained for more than 1 year to prevent repeated violations.

Notification Method for Policy Changes

In the event of changes to this policy, we will provide users with advance notice. Users will have the opportunity to review the revised policy and decide whether to continue using the service.

Data Protection Management

The responsibility for data protection and management lies with the operator of Classii.mu, Iwao Kobayashi, CEO of Scholex Co., Ltd., based on the terms agreed upon by users in the terms of service.