What's Wrong With Secretary Kim

박서준

Lee Young-joon

박민영

Kim Mi-so

이태환

Lee Sung-yeon

표예진

Kim Ji-a

김혜옥

Madame Choi

김병옥

CEO Lee

강기영

Park Yoo-sik

강홍석

Yang Cheol

황찬성

Go Gwi-nam

김예원

Seol Ma-eum

이유준

Jung Chi-in

황보라

Bong Se-ra

백은혜

Kim Pil-nam

허순미

Kim Mal-hee

Kim Jung-woon

Park Joon-hwan

Lee Jung-min

Lee Young-ok

서효림

Yoo-sik's Ex-wife

문우진

Lee Young-joon / Lee Sung-hyun