To subscribe to back number email newsletter, you must register an id ARTIST ID (Plus member ID).

back number email magazine (back number newsletter) is a free email magazine that delivers the latest information about back number.
Anyone can receive the newsletter by registering for id ARTIST ID (Plus member ID)! Register and check the latest information!!

id ARTIST ID
What is (Plus member ID)?

The id ARTIST ID (Plus member ID) is a unique ID for each customer that can be used to receive email newsletters back number and other id Entertainment artists, register for fan clubs, purchase merchandise online, and more.



* "id ARTIST ID" is the same as "Plus member ID".


id ARTIST ID
(Plus member ID)
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  • 1. Convenient!!


    By obtaining an ARTIST ID (Plus member ID), you will be able to do the following:

    • ✓ Receive back number email newsletters
    • ✓ Register for back number official fan club "one room"
    • ✓ Use back number online store
    • ✓ Apply for advance tickets (pre-sale for free email newsletter members) using your id ARTIST ID (Plus member ID)
      * Pre-sale may not be available depending on the event.

  • 2. Easy!!


    Simply enter your email address at the link below to register for the newsletter. Registration will take approximately one minute.

    Register here

    • [Step 1]

      Enter your email address under "Subscribe to email newsletter" and send

    • [Step 2]

      Click the URL in the email you received

    • [Step 3]

      Enter your date of birth, gender, prefecture, and password, and check back number.

    • [Step 4]

      Registration completed!
    • * If you are one room member or have an id ARTIST ID (Plus member ID), you do not need to register. You can check your subscription status from your My Page by logging in.
    • * You do not need to register your name or address. You only need to register basic information such as your date of birth, gender, and prefecture.