CLC, which is an acronym for “CrystaL Clear,” is a South Korean girl group that debuted in 2015. It originally had five members: Seunghee, Yujin, Seungyeon, Sorn and Yeeun. In 2016, two new members were added to the group, Elkie (from Hong Kong) and Eunbin, but Eunbin’s participation in the group was delayed until the end of her participation in the reality competition “Produce 101.”