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