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