If several years have passed since joining without any activity, will my membership be canceled automatically, or do I need to complete any procedures?

You should receive a message confirming whether you wish to continue after six months. If you haven’t received one, it seems you may not be connected to the new LINE account. The LINE account has changed several times, and you should have been notified of each new account. However, since many people don’t check their email these days, you may simply have missed it. If you haven’t replied to the continuation confirmation, your profile will be removed from the member list, leaving you in essentially the same status as someone who has withdrawn.

If you don’t reply to the continuation confirmation email once every six months, your membership will be canceled automatically.