Lee Yeon-hee

as Choi Eun-hwan

Hyun Bin

as Kang Jae-kyung

Lim Ju-hwan

as Seung-Joon

Jeong Wook

as Principal

Lee Han-sol

as Myung-sik

Lee Young-hoo

as Chairman Kang

Lee Kan-hee

as Eun-hwan's Mother

Do Yong-gu

as Myung-sik's Father

Park Yoo-Sun

as Child in Public Performance

Kim Byeong-se

as Lawyer

Lo Yong-Joon

as Goo -Ho

Yang Geum-seok

as Singing Class Member

Lee Jae-gu

as Teacher

Lee Mi-do

as Myung-suk's Younger Sister

Hong Dal-pyo

as Jae-kyung's Father

Won Duk-hyun

as Jae-kyung (Young)

Kim Jung-woon

as Jae-soo's Friend #3

Park Jin-young

as Butler

Kwon Oh-jin

as Gas Station Boss

Kim Gyung-ae

as Soon-chul's Grandmother

Kim Kyeong-ran

as Old Woman with Fur Socks

Kim Ki-doo

as Pyung-chang's Classmate #3

Park Sang-hoon

as Jae-soo

Kim Zio

as Jae-soo's Friend #1

Jo Gyu-chul