Mr. Kim
Seok-dae Eom (as Kyoung-In Hong)
Mr. Choi (as Goo Shin)
Middle School Student
Fifth Grade / Second Class Student
Male Teacher 1
Arcade owner's wife
Byeong-tae
Gang Dong-gyu
Im Man-sun
Female Student
Byeong-tae's mother
Kim Yeong-pal
School Principal
Sixth Grader
Head teacher
Hwang Yeong-su
Fifth Grade, Second Class Student
Male Teacher 2
Jun-tae
Train Station Worker
Classmate
Female Teacher
First female teacher
Arcade owner
Chinese restaurant owner
Old Teacher
Janitor
Byung-tae's Father (as Sang-Jeon Woo)
Hwang Yeong-su (as Yeong-jin Nam)