Kim So-hyun as Mok Sol-hee
Hwang Min-hyun as Kim Do-ha
Yoon Ji-on as Jo Deuk-chan
Seo Ji-hoon as Lee Kang-min
Lee Si-woo as Syaon / Sa Ji-on
Park Kyung-hye as Cassandra / Yoon Ye-seul
Ha Jong-woo as Baek Chi-hoon
Seo Hyun-chul as Jang Jung-kyu
Cho Jin-se as So Bo-ro
Kim Won-hun as Oh Oh-baek
Eom Ji-yoon as Hwang Cho-rok
Nam Hyun-woo as Jo Jae-chan
Song Jin-woo as Park Moo-jin
Jin Kyung as Cha Hyang-suk
Ahn Nae-sang as Mok Tae-seop
Seo Jung-yeon as Jung Yeon-mi