이제훈
— Jang-ho
Han Suk-kyu
— Sang-jin
강소라
— Sook-hee
Lee Jae-yong
— Gang Boss
Jin Kyung
— Mi-sun
Bae Sung-woo
— Sang-jin's Alumnus (uncredited)
조진웅
— Chang-soo
김지석
— Drunken Man (cameo) (uncredited)
이상훈
— Teacher
윤영균
— Delivery Man
Yang Han-yeol
— Ji-min
Oh Dal-su
— Principle Deok-saeng
윤영균
— Delivery man