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
