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Contact

Last updated: September 23, 2026

This English version is a reference translation. The Japanese version is the official text and prevails in case of any discrepancy.

For inquiries about Jankokushi: A Mahjong March, please use the contact point below.

Contents

  1. Contact Point
  2. What We Accept
  3. Before Contacting Us
  4. Please Note

Contact Point

Operator
合同会社AICREO NEXT
Email address
contact@aicreonext.com
Response time
Within 5 business days

The App does not have an input form, because we have no server to receive the content of inquiries. Rather than placing a send button that is not implemented and does nothing when pressed, we show only a method that reliably reaches us.

What We Accept

  • Reports of bugs and errors
  • Opinions and requests
  • Inquiries about the Privacy Policy and the Terms of Use
  • Inquiries about press coverage and partnerships

Before Contacting Us

  • You can delete the data saved on your device yourself from “Delete all saved data” on the App’s “Settings” screen. You do not need to contact us to do this.
  • Progress in the App is saved only in the storage area on your device, and we keep no copy on any server. Because of this design, we cannot respond to requests to recover lost data.

When reporting a problem, telling us your device, OS version and the steps that led to it will help us investigate faster. If “Error reports” on the Settings screen contains entries, please attach a copy.

Please Note

We do not promise to reply to every inquiry. Depending on the content, we may refrain from replying.

Please take care not to include in your email any personal information that is not needed for your inquiry.

Back to the appTerms of UsePrivacy PolicyLegal Notice under the Act on Specified Commercial TransactionsDeleting Your Account and Data