Kim Gyu-ri

Min-ah

Park Ye-jin

Hyo-shin

Rie Young-zin

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