Thank you for always using back number official fan club, "one room".

Due to database maintenance of the payment system,

We will be performing nighttime maintenance on the following dates.

The site will be accessible during this period,

Member services requiring login, including joining and leaving services, are unavailable.

We sincerely apologize for any inconvenience this may cause our customers.

We kindly ask for your understanding and cooperation.

■ Maintenance period

2024/11/18 (Mon) 3:00 AM - 7:00 AM

*Please note that maintenance times may vary.