During a 'V' live broadcast on December 12, G-Friend's Eunha talked about her recent collaboration with members of other girl groups under the name Sunny Girls for the song "Taxi."

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Firstly, Yuju said she's been getting closer to Jung Chae Yeon. The two have even eaten together recently.  Then, Eunha said, "I formed a group called Sunny Girls with the members of other girl group members for a performance on 'Inkigayo.'  I did always say I wanted to do a sexy concept, but I was not prepared for it, so it was very hard for me.  SinB helped me out a lot and Yuju also mentally prepared me a lot.  The members [of Sunny Girls] were so pretty and kind that I became their fans.  I looked up their fan cams and am learning more about the members.  I fought a bit with Yuju.  We were competing Jung Chae Yeon's charms against the Sunny Girls members."