Kim Ha-neul
Hyo-joo
Acting
Yoo In-young
Hae-young
Acting
Lee Won-keun
Jae-ha
Acting
Lee Hee-jun
Pyo Sang-woo
Acting
Gi Ju-bong
Jae-ha's father
Acting
Lee Ki-woo
Lee Jong-chan
Acting
Jeong Seok-yong
vice-principal
Acting
Hong Wan-pyo
head teacher
Acting
Oh Na-ra
Lesson teacher
Acting
Lee Kyung-young
Chairman
Acting
Kwak Dong-yeon
Yoo Jong-Ki
Acting