
Sul Kyung-gu
Kang Ho-chang

Chun Woo-hee
Song Jung-wook

Moon So-ri
Gun-woo's mother

Oh Dal-su
Do Ji-yeol

Ko Chang-seok
Teacher Jung

Kang Shin-il
Principal

Sung Yu-been
Kang Han-gyeol

Nam Kee-ae
Gyu-beom's grandmother

Lee Mi-eun
E-den's mother

Yoo Jae-sang
Gun-woo

Jung Yoo-ahn
Yoon-jae

Jeong Taek-hyeon
E-den

Roh Jeong-eui
Ji-ho

Jung Seung-kil
Police

Kim Seung-o
(uncredited)