The group performed songs for the anime Zettai Karen Children for the duration of the show.
Karen Girl's was formed from elementary school children as a result of an audition.
In 2010, Ayami and Suzuka became founding members of Sakura Gakuin, an idol group formed by the same agency.
[3] Suzuka became a founding member of the metal idol band Babymetal, taking the stage name Su-metal.
",[a] at the show Legend "D" Su-metal Seitansai at Akasaka Blitz on 20 December 2012, the same day as her fifteenth birthday.