Kim Ha-neul

Park Hyo-joo

Yoo In-young

Hae-young

Lee Won-keun

Jae-ha

Lee Hee-jun

Pyo Sang-woo

Ki Joo-bong

Jae-ha's father

Lee Ki-woo

Lee Jong-chan

Jeong Seok-yong

vice-principal

Hong Wan-pyo

head teacher

Oh Na-ra

Lesson teacher

Lee Kyung-young

Chairman

Kwak Dong-yeon

Yoo Jong-Ki

Im Hwa-young

Lee Yoon-mi

Kim Soo-jin

Teacher

Lee Chung-hee

Teacher

Ok Ji-young

Kim Na-yeon