Min-ah
Kim Gyu-ri
Hyo-shin
Park Ye-jin
Student
Hye-mi Lee
Classmate
Shin Hye-Jung
Class Leader
Seung-Yeon Han
Athletics Member
Lim Seong-eon
Athletics Captain
Ku Hye-Ju
Teacher Yang-ho
Oh Min-ae
Si Eun-jae
Han Min-gwan
Shi-eun
Lee Yeong-jin
Ji-won
Gong Hyo-jin
Yeon-an
Kim Jae-in
Go Hyeong-seok
Baek Jong-hak
Biology Teacher
Maeng Bong-hak
Vice Principal
Jung Jin-Gak
Turtle Girl
Chae Yoon-Seo
Group of Singer
Kim Kyeong-Jin
Director
Kim Tae-yong
Writer
Music
Cho Sung-woo
Editor
Kim Sang-bum
Min Kyu-dong
Producer
Lee Choon-yun
Cinematography
Kim Yun-su
Visual Effects Supervisor
Sung-jin Jung
Oh Ki-min
Art Direction
Oh Sang-man
Production Design
Lee Dae-hoon
Assistant Director
Kang Yi-kwan
Jung-Ok In