[2] Dancing Dolls were signed by Sony Music Entertainment Japan and on September 12, 2012, released their debut single, titled "Touch -A.S.A.P.- / Shanghai Darling".
Also, the CD single was preceded by "Shanghai Darling", which was released on August 1 for digital download and peaked at the 8th spot in the daily Recochoku chart.
In May 2014, the twin sisters Kyoka and Asuka left the group and Dancing Dolls became inactive for several months.
At the end of January 2015, Miu and Kanon were recruited as new Dancing Dolls members.
They were officially introduced and made their debut during Dancing Dolls’ live performance on February 14 in Tokyo.