Lee Yeon-hee

Choi Eun-hwan

Hyun Bin

Kang Jae-kyung

Lim Ju-hwan

Seung-Joon

Jeong Wook

Principal

Lee Han-sol

Myung-sik

Lee Young-hoo

Chairman Kang

Lee Kan-hee

Eun-hwan's Mother

Do Yong-gu

Myung-sik's Father

Park Yoo-Sun

Child in Public Performance

Kim Byeong-se

Lawyer

Yang Geum-seok

Singing Class Member

Lee Jae-gu

Teacher

Lee Mi-do

Myung-suk's Younger Sister

Hong Dal-pyo

Jae-kyung's Father

Kim Jung-woon

Jae-soo's Friend #3

Park Jin-young

Butler

Kwon Oh-jin

Gas Station Boss

Kim Ki-doo

Pyung-chang's Classmate #3

Park Sang-hoon

Jae-soo

Kim Zio

Jae-soo's Friend #1

Jo Gyu-chul