Privacy Policy
MIRROR CUBE INC. (hereinafter referred to as “the Company”)handles users’ personal information in accordance with the following policyregarding the Japanese Learning Platform for Vietnamese Learners “ベトナム人のための日本語学習プラットフォーム”(hereinafter referred to as “the Service”).
Information We Collect
(1) Information Provided by Users at Registration
※All items listed below are required as they are necessary for using the Service.
-Full name
-Date of birth (for age verification)
-Email address
-Password
-Gender (optional)
-Japanese proficiency level (N5 / N4 / N3 / N2 / N1)
(2) Information Collected During Payment
※(All payment information is securely managed by Stripe. We do not store credit card numbers.)
-Credit card information
-Payment history (purchase date, amount, status, etc.)
(3) Information Automatically Collected
-Device information (device type, browser, etc.)
-IP address
-Cookies and other identifiers
-Usage data (viewing activity, learning progress, access logs, etc.)
(4) Information Collected via Google Analytics
This Service uses Google Analytics (GA4) for access analysis.
Google Analytics collects the following information using cookies and similar technologies:
-Pages viewed
-Time spent on the Service
-Referrer (source of access)
-Device and regional information (city-level; not personally identifiable)
-On-site actions (button clicks, exit pages, etc.)
These data are handled solely as non-personally identifiable statistical information,and used only for the purpose of improving the Service.For details on how Google uses data, please refer to the Google Privacy Policy.
Purpose of Use
The personal information we collect is used for the following purposes:
-Providing and operating the Service
-Displaying purchased learning materials in My Page and managing purchase history
-Processing payments
-User support and responding to inquiries
-Service improvement and analytics
-Preventing fraudulent activities and protecting user accounts
-Sending necessary notifications and communications
Provision of Personal Information to Third Parties
We do not share personal information with third parties except in the following cases:
-When required by law
-When we obtain consent from the user
-When information must be shared to the extent necessary for payment processing (e.g., Stripe)
Security Measures
We take appropriate technical and organizational security
measures to prevent unauthorized access,loss, leakage,
alteration, or destruction of personal information.
Access, Correction, and Deletion of Personal Information
Upon request from the user, we will disclose, correct, or delete the personal information we hold.Please contact us at the following address:
Revisions to This Policy
We may update this Privacy Policy as necessary.
Any changes will take effect when the updated policy is posted on the Service.