이승기

Kang Joon-soo

문채원

Kim Hyun-woo

이서진

Lee Dong-jin

정준영

Andrew Yeom

Go Yoon

Jae-joong

박수영

Min-ah

류화영

Hee-jin

박시은

Joon-hee

Ha Kyoung-min

Han Seong-goo

박은지

Cha Myung-sun

임하룡

Principal

김갑수

Joon-soo's Father

이경진

Joon-soo's Mother

송영창

HQ Chief

김부선

Hyun-woo's Mother

Lim Jong-yun

Director

김광규

Bald Man

홍석천

Restaurant Owner

이주연

Joon-soo's Girlfriend

김소연

Joon-soo's Ex-girlfriend 1

Son Ga-in

Joon-soo's Ex-girlfriend 2

박지연

Weather Woman

박희건

Joon-hee's Boyfriend

이영범

Military Assistant Teacher

남능미

Baths