After registering an individual member, you will receive an automatic reply email from support-info@ninja-official.com.
If you do not receive the email, you may have blocked the reply email from the [Japan Ninja Council] at your email address. In this case, you cannot proceed to the main registration.
In particular, it seems that there is a high possibility of errors at addresses such as "@ icloud.com" and "@ me.com".
If you do not receive an automatic reply email, please add "@ ninja-official.com" if you have specified domain-specific reception.