Cast 15
Soo Ae
Byun Ji-sook / Seo Eun-ha (20 episodes)
Ju Ji-hoon
Choi Min-Woo (20 episodes)
Yeon Jeong-hun
Min Seok-hoon (20 episodes)
Yoo In-young
Choi Mi-Yeon (20 episodes)
Jeong Dong-hwan
Byun Dae-sung (20 episodes)
Yang Mi-kyung
Kang Ok-soon (20 episodes)
Lee Ho-won
Byun Ji-hyuk (20 episodes)
Jeon Kuk-hwan
Chairman Choi Doo-hyun (20 episodes)
Jo Yoon-woo
Oh Chang-soo (20 episodes)
Park Joon-geum
Mrs. Song (20 episodes)
Jo Han-sun
Kim Jung-tae (20 episodes)
Shin Dong-hoon
[Big guy] (20 episodes)
Amy Aleha
[Scientist] (20 episodes)
Lee Sung-deuk
Byun Ji Sook's high school classmate (20 episodes)
Lee Yoon-jeong
Byun Ji-sook [Young] (20 episodes)
Crew 1
HS
Hong Seong-gil
Cinematography (20 episodes)
Directing 1
Boo Seong-cheol
Director (20 episodes)
Editing 2
IH
Im Ho-cheol
Editor (20 episodes)
JI
Jo In-hyung
Editor (20 episodes)
Production 1
SJ
Shim Jung-woon
Executive Producer (20 episodes)
Sound 3
JS
Jung Se-rin
Original Music Composer (20 episodes)
KJ
Kim Jun-seok
Original Music Composer (20 episodes)
Zico
Theme Song Performance (20 episodes)
Writing 2
Zico
Lyricist (20 episodes)
CH
Choi Ho-chul
Writer (20 episodes)