Character Name : Hyo-joo

Original Name : 김하늘

Gender : Female

Character Name : Hae-young

Original Name : 유인영

Gender : Female

Character Name : Jae-ha

Original Name : 이원근

Gender : Male

Character Name : Pyo Sang-woo

Original Name : 이희준

Gender : Male

Character Name : Jae-ha's father

Original Name : 기주봉

Gender : Male

Character Name : Lee Jong-chan

Original Name : 이기우

Gender : Male

Character Name : vice-principal

Original Name : 정석용

Gender : Male

Character Name : head teacher

Original Name : 홍완표

Gender : Male

Character Name : Lesson teacher

Original Name : 오나라

Gender : Female

Character Name : Chairman

Original Name : 이경영

Gender : Male

Character Name : Yoo Jong-Ki

Original Name : 곽동연

Gender : Male