Choi Min-sik

Hyeon-woo

Jang Shin-young

Su-yeon

Kim Ho-jung

Yeon-hee

Kim Kang-woo

Ju-ho

Youn Yuh-jung

Mother

Kim Yeong-ok

Jae Il's grandmother

Jang Hyun-sung

Kyung-soo

Choi Il-hwa

Yong Seok's father

Kim Dong-young

Yong Seok

Uhm Hyo-seop

On-duty teacher

Lee Min-ah

The woman in front

Lee Eon

(uncredited)

Lee Jae-eung

Jae-il (uncredited)

Kim Jung-pal

Young Miner