What's Wrong with Secretary Kim

Park Seo-jun

Lee Young-joon

Park Min-young

Kim Mi-so

Lee Tae-hwan

Lee Sung-yeon

Pyo Ye-jin

Kim Ji-a

Kim Hye-ok

Madame Choi

Kim Byeong-ok

CEO Lee

Kang Ki-young

Park Yoo-sik

Kang Hong-suk

Yang Cheol

CHANSUNG

Go Gwi-nam

Kim Ye-won

Seol Ma-eum

Lee Yoo-jun

Jung Chi-in

Hwang Bo-ra

Bong Se-ra

Baek Eun-hye

Kim Pil-nam

Heo Soon-mi

Kim Mal-hee

Kim Jung-woon

Park Joon-hwan

Lee Jung-min

Lee Young-ok

Seo Hyo-rim

Yoo-sik's Ex-wife

Moon Woo-jin

Lee Young-joon / Lee Sung-hyun

Bae Gang-yoo

Young Lee Sung-yeon

Kim Ji-yoo

Young Kim Mi-so