A hashtag is going viral among mononofu.

One hashtag has been buzzing since RENI said something during the MCZ's "13th Anniversary Concert" on Sunday.

RENI asked, "When did the Mononofu fall in love with MCZ?".

(It was followed by something along the lines of, "No matter when you fell in love with them, they're all important.")

Since that night, the hashtag "the moment I fell in love with Momoclo" has been spontaneously created, and Mononofu have started to share their memories on various SNS.

See here for Twitter. 

Today, AYAKA responded to this and also left a comment on Instagram Stories (which has already disappeared) saying, "Thanks for telling..."