Générique complet
Once upon a time in high school
권상우
Hyeon-su
Lee Jung-jin
Woo-shik
한가인
Eun-ju
이종혁
Cha Jong-hoon
박효준
Ham Jae-bok
서동원
Seong-hun
김동영
Young Hyeon-su
조진웅
Yasaengma Gang Member
LH
Lee Gyu-ho
Yasaengma Gang Leader
김인권
Jiksae
백봉기
Cheetah
안내상
Teacher
김병춘
Choi Byeong-sam
권태원
English Teacher
Cheon Ho-jin
Hyeon-su's Father
LS
Lee Hyeon-seok
Hyun-soo's Mother
전성애
Jong-hoon's Mother
YS
Yang Han-seok
P.E. Teacher
Park Soo-young
Politics & Economics Teacher
Kim Bu-seon
Boniface
이장우
Student
Baek Joo-hee
Student
이건문
Korean crow-tit's gang
