Cheer Up, Mr. Kim!

Kim Dong-wan

as

Kim Tae-Pyung

Choi Jung-yoon

as

Chun Ji-young

Wang Ji-hye

as

Lee Woo Kyung

Yang Jin-Woo

as

Baek Gun-wook

Choi Il-hwa

as

Lee Sang Gook

Lee Jeong-kil

as

Baek Jae-sang

Yeon Jun-seok

as

Ri Cheol-ryong

Jin Kyung

as

Jo Jae-nam

Seo Ji-hee

as

Kim Hee-rae

Roh Jeong-eui

as

Nam Song-ah

Oh Jae-moo

as

Go Joo-sung

Lee Du-il

as

Chun Myung-kwan

Sa Mi-ja

as

Oh Ssang-sim

Kim Hye-sun

as

Hong Hae-sook

Baek Il-seob

as

Chun Kyung-sool