Park Ye-jin

Hyo-shin

Lee Yeong-jin

Shi-eun

Kim Gyu-ri

Min-ah

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

Han Min

Girl that sits next to Si-Eun in class

Kim Kyeong-Jin

Group of Singer

Hye-mi Lee

Student

Seung-Yeon Han

Class Leader

Shin Hye-Jung

Classmate

Lim Seong-eon

Athletics Member

Oh Min-ae

Teacher Yang-ho

Ku Hye-Ju

Athletics Captain

Han Min-gwan

Si Eun-jae