Today is the anniversary of AYAKA's participation in MCZ.

Today, November 23, is the anniversary of AYAKA's joining MCZ.

Many Mononofu seem to be celebrating by sending tweets with a hashtag meaning "13th anniversary, AYAKA".

https://twitter.com/hashtag/%E3%81%82%E3%83%BC%E3%82%8A%E3%82%93%E3%82%82%E3%82%82%E3%82%AF%E3%83%AD%E5%8A%A0%E5%85%A513%E5%91%A8%E5%B9%B4?src=hash&ref_src=twsrc%5Etfw

Momoiro Clover (before the "Z" was added yet) was formed in May 2008.

On November 23 of that year, they were announced as a member of Momoiro Clover, along with AKARI and YUKINA, during a live performance at Ramla in Iidabashi, TOKYO.