Group Apink has a photo time at the mini 7th album ONE & SIX showcase held at the 24th live hall of Gwangjang Dong Yes in Gwangjin-gu, Seoul on the afternoon of the 2nd.
The title song 'No 1' is a song about the feelings of a woman who has left her mind.
About Apink
Apink is a South Korean girl group formed by IST Entertainment. The group debuted on April 19, 2011, with the extended play Seven Springs of Apink.
 Wikipedia