Watch providers
Top Cast
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