여교사

김하늘

Park Hyo-joo

Yoo In-young

Hae-young

이원근

Jae-ha

이희준

Pyo Sang-woo

Ki Joo-bong

Jae-ha's father

이기우

Lee Jong-chan

Jeong Seok-yong

vice-principal

홍완표

head teacher

Oh Na-ra

Lesson teacher

Lee Kyung-young

Chairman

Kwak Dong-yeon

Yoo Jong-Ki

Im Hwa-young

Lee Yoon-mi