Four member boy group CICI (WON, Sunghyun, Haneul, and JL) have made their debut with the release of their first digital single "CC". The lyrics to "CC" were written by WON, Haneul, and Sunghyun, who also produced the song.

CICI stands for 'Culture ICon of Innovation' and 'Can I Come In?'. 'Can I Come In?' references the members' desire to be let into the hearts of Kpop fans, while 'Culture ICon of Innovation' refers to the aspiration of becoming the culture icons of innovation who will lead this era.