What's Wrong with Secretary Kim

Park Seo-junLee Young-joon
Park Min-youngKim Mi-so
Lee Tae-hwanLee Sung-yeon
Pyo Ye-jinKim Ji-a
Kim Hye-okMadame Choi
Kim Byeong-okCEO Lee
Kang Ki-youngPark Yoo-sik
Kang Hong-sukYang Cheol
Hwang Chan-seongGo Gwi-nam
Kim Ye-wonSeol Ma-eum
Lee Yoo-junJung Chi-in
Hwang Bo-raBong Se-ra
Baek Eun-haeKim Pil-nam
Heo Soon-miKim Mal-hee
Kim Jung-woonPark Joon-hwan
Lee Jung-minLee Young-ok
Seo Hyo-rimYoo-sik's Ex-wife
Moon Woo-jinLee Young-joon / Lee Sung-hyun
Kim Ji-YuYoung Kim Mi-so
Bae Gang-YooYoung Lee Sung-yeon
Jo Deok-hyeonKim Young Man [Mi So's father]
Bae Hyeon-seongBae Yun Sung [Intern]
Hong Ji-yoonOh Ji Ran [Famous model & onetime girlfriend of Young Joon]
Ko Se-wonChairman Lee [Yeong Joon's father - Young]
Lee Soo-kyungMrs. Choi [Young Joon's Mother - Young]
Park Byung-eunPark Byung-Eun
Choi Na-MooWoman at the Spanish Embassy party
Song Yi-jaeWoman who receives hat from Lee Sung Yeon on airplane
Lee Do-yeonJournalist
Park Tae-yunClaw machine schoolboy
Choi HeeHost of the book concert
Jeong Soo-youngAgency staff
Michal Spasov AshminovHimself
Jung So-minMi-so's mother
Lee Min-kiMi-so's father
Choi Hyeon-wooHimself
Jeong Si-yul
Son Sung-yoonKidnapper
Kil Hae-yeonWoman at the reserved parking space
Jeong Myeong-junPsychiatrist
Jung Yu-miYoung Joon's friend
Lee Se-youngStaff who talked behind Kim Mi So's back
Kim Ga-yeonStaff who talked behind Kim Mi So's back
Byeong-jun LeeJang Jeong Do [Fashion Designer]
Ahn Yi HyeonChild holding a doll outside Kim Mi So's room
Park Joon-hwaDirector
Yoo Jong-sunDirector
Jung Eun YoungScreenplay
Paek Sun-wooWriter
Choi Bo-rimWriter
Jang Jung-doExecutive Producer
Choi Ji-youngCo-Director
Jeong Se-woonVocals
Kim Na-youngVocals
Jo Jin-hoVocals
KIHYUNVocals
SeolaVocals
RothyVocals
Yoon Ddan DdanVocals
SeogiVocals
Song Yu-vinVocals
Jung Kyung YoonComic Book

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