today,

-back number official website

・Official fan club "one room"

- "back number official app"

We have renewed it!

We've revamped our website and integrated everything into one platform for easier use!

【back number official site & official fanclub「one room」】

https://backnumber.info

*If you have bookmarked the URL for "one room," please update it.

The domain "oneroom.info" for email addresses sent from one room will remain unchanged.

* If you are one room member and have been using the "back number official app" before the renewal, you may experience issues viewing content after updating.

We apologize for the inconvenience, but please uninstall the app and then reinstall it.

▼ back number app

https://backnumber.info/feature/backnumber_APP

* The calendar function that allows you to register your own schedule in back number app will be discontinued with this renewal.