Cast (18)
Yoon Hyun-minKo Nan-do / Holo
Ko Sung-heeHan So-yeon
Choi Yeo-jinKo Yoo-jin
Hwang Chan-sungBaek 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 AhPark Geon-gyuGIO Labs staff
Kim Soo-jinMère de Nan-Do
Lee Ki-chanLee Ki Chan Yeon Kang Woo [So Yeon's boss]
Baek Jin-heeVoice