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
Lee Hyun-soon
Teacher
Jung Jin-gak
Vice Principal
Kim Kyeong-jin
Group of Singer
Lee Hye-mi
Student
Shin Hye-jung
Classmate
Han Seung-yeon
Class Leader
Lim Seong-eon
Athletics Member
Ku Hye-ju
Athletics Captain
Oh Min-ae
School nurse
Han Min
Shi-eun's friend
Jeon Gi-gwang
Coach
Kang Min-kyung
Classmate