Character Name : Kim Sang-nam

Original Name : 정재영

Gender : Male

Character Name : Na Joo-won

Original Name : 유선

Gender : Female

Character Name : Vice Principal

Original Name : 강신일

Gender : Male

Character Name : Cha Myeong-jae

Original Name : Jang Ki-bum

Gender : Male

Character Name : Jang Dae-geun

Original Name : 김혜성

Gender : Male

Character Name : Charles

Original Name : 조진웅

Gender : Male

Character Name : Principal Nun

Original Name : 김미경

Gender : Female

Character Name : Kim Jin-man

Original Name : 이현우

Gender : Male

Character Name : Oh Chul-jin (uncredited)

Original Name : 지일주

Gender : Male

Character Name : Jo Jang-hyuk (uncredited)

Original Name : 김동영

Gender : Male

Character Name : Park Choong-nam (uncredited)

Original Name : Son Seung-won

Gender : Male

Character Name : Goon San High Baseball Team

Original Name : Kim Ho-won

Gender : Male