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

We will be performing system maintenance on the following dates.

[Date and Time]

Friday, June 25, 2021 2:00 AM - 3:00 AM

*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.

We hope you will continue to support Yamamoto Sayaka Yamamoto Sayaka her official fan club, "SYC."