Please read before contacting us

We have compiled a list of frequently asked questions from our customers in the “Frequently Asked Questions” section.
Please refer to the “FAQ” before contacting Heart 9.

To customers who have not received e-mails from Heart9

Heart9 provides various types of information by e-mail.
If you have block rules or can only receive emails from specified domains to prevent spam e-mails, please make sure you can receive e-mails from the following domains before using this service

◆Membership Registration Procedure e-mail / Change of Registration Information e-mail / Payment Failure e-mail / Incomplete Payment e-mail
Mail Magazine / Customer Center
Common causes of undelivered e-mails
  • If you are using a cell phone or smart phone (Android/iPhone) e-mail address, please make sure that you can receive e-mails from “” and “” (excluding @) by adding the domain name or e-mail address in your settings.
  • If you are using a free email address such as Yahoo! Mail or Gmail, please check your “junk mail folder” as it may be categorized as junk mail.
  • There is a possibility that your registered e-mail address is incorrect. Please check your registered information.
  • The capacity of the incoming mail box may be full. Please organize your incoming mail folder and trash folder.

Contact us using the form

*If you contact us outside of business hours, we will reply to you on the next business day.
*Before contacting us, please make sure that you can receive the domain name “”.
*Please note that we can only respond to inquiries in English. If you contact us in a language other than English, we may not be able to reply to your inquiry.

For inquiries about Heart9, please fill in your name, contact information, and the contents of your inquiry in the form after agreeing to the “Handling of Personal Information” below. The person in charge will contact you back. Please understand in advance that we may not be able to respond to inquiries for sales purposes.

1.Collection of personal information

We collect the following information about individuals.

  1. Name, phone number, and e-mail address of the person making the inquiry

2.Purpose of use of personal information

We will use the personal information provided by you in the inquiry form only for the following purposes.

  1. Response to inquiries

3.Voluntary nature of the personal information provided and failure to provide such information

Providing your personal information is entirely voluntary, however, if you do not provide us with this information, we will not be able to contact you with a response to your inquiry.

4.Provision and Disclosure of Personal Information to Third Parties

We will not provide or disclose the collected personal information to any third party without the consent of the individual concerned beyond the scope of the purposes described in Section 2, except in the following cases
  1. When required by law
  2. When it is necessary for the protection of the life, body, or property of an individual and it is difficult to obtain the consent of the individual.
  3. When it is particularly necessary for improving public health or promoting the sound growth of children, and it is difficult to obtain the consent of the person concerned.
  4. When it is necessary to cooperate with a national agency, a local government, or a person or organization entrusted by either of the foregoing in executing affairs prescribed by laws and regulations, and obtaining the consent of the person in question is likely to impede the execution of such affairs.

5.Disposal and deletion

The personal information you provide will be disposed of or deleted at our own responsibility as soon as the matter in question is resolved.

6.Disclosure, correction, suspension of use, and deletion

If you would like to request notification of the purpose of use, disclosure, correction, addition, deletion, suspension of use, or deletion of the personal information you have provided, please contact the Personal Information Consultation Desk in Section 7.

7. Personal information consultation service

Heart9 Personal Information Customer Service
Contact Form

8. personal information protection manager

Nobuyuki Sakai

Please contact us in English. If you contact us in a language other than English, we may not be able to reply to your inquiry.