Jin Seon-kyu
— Si-heon
성유빈
— Yoon-woo
Oh Na-ra
— Il-sun
Ko Chang-seok
— Principal
장동주
— Hwan-ju
Ko Kyu-phil
— Man-deok
Kim Min-Ho
— Bok-an
이종화
— Gao
Choi Hyung-tae
— Bok-co
Cho Jung-hun
— Jody
태인호
— Song Hee-cheol
Cha Soon-bae
— President
Lee Jun-hyeok
— Reporter
Lee Hong-nae
— Lee Dong-su
Woo Yeon-seo
우정원
— Yoon-woo's mother
Lee Il-hwa
— Koo Do-sun
Park Sung-Geun
— Director
Lee Yoon-hee
— Teacher