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Yoon Hyun-minKo Nan-do / Holo
Ko Sung-heeHan So-yeon
Choi Yeo-jinKo Yoo-jin
Hwang Chan-seongBaek Chan-sung
Lee Jung-eunSo-yeon's mother
Kang Seung-hyunYoo Ram
Son Jong-hakNam Gi-Ho
Jung Young-kiJo Jin-Seok
Jeong Yeon-jooJi Na
Nam Myung-ryeolBaek Nam-Gyu
Jeong Do-wonMr. Jeong
Lee You-miJi Hye
Yang Dae-hyeokLee Dong Sik
Gong Min-jeungJeong Ah
Park Geon-gyuGIO Labs staff
