- Mia Ageha, So Min, and Chae Kyoung, placed on the right. COSMOs stands for Chae Kyoung (C), So Min (S) and Mia (M). This name came from Yumemi, a girl who dreamed of becoming an astronomer. The costumes of COSMOs were designed by Shou, though So Min and Chae Kyoung originally wanted to choose Yun-su's designs because of So Min's love for him and Chae Kyoung being his sister. COSMOs focuses on the idea of supporting everyone's dream, such as supporting Yumemi's dream of becoming an astronomer. COSMOs is the third group of the shuffle teams of Prizmmy and PURETTY. It consists of members
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