Thank you for always using Yamamoto Sayaka official fan club "SYC".

We will be performing system maintenance on the following dates.

[Date and Time]

Wednesday, March 17, 2021 2:00-6:00

*The time may vary depending on the work situation.

During maintenance, the site will be unavailable.

Please note that you will not be able to register as a new member, log in, or change your membership information.

We apologize for any inconvenience this may cause our customers, and we appreciate your understanding and cooperation.