All Cast
Kim Ha-neul
Hyo-joo
Yoo In-young
Hae-young
Lee Won-keun
Jae-ha
Lee Hee-jun
Pyo Sang-woo
Gi Ju-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
