What's Wrong with Secretary Kim

Park Min-Young

Kim Mi-so

Park Seo-joon

Lee Young Joon

Lee Tae-Hwan

Lee Sung Yeon

Kim Byeong-Ok

Chairman Lee

Kim Hye-Ok

Madame Choi

Kang Ki-young

Park Yoo-sik

Hwang Chan-sung

Go Gwi Nam

Pyo Ye-Jin

Kim Ji-ah

Lee Yoo-Joon

Jung Chi In

Hwang Bo-ra

Bong Se Ra

Kim Ye-Won

Sul Ma Eum

Moon Woo-jin

Lee Young-joon (young)

Kim Ji-Yu

Kim Mi-so (young)

Kim Jung-Woon

Park Joon Hwan

Kang Hong-Seok

Yang Cheol

Baek Eun-Hye

Kim Pil Nam

Jo Deok-hyeon

Kim Young Man (Mi So's father)

Hong Ji-yoon

Oh Ji Ran