장동윤

Do-won

서벽준

Jin-soo

결휘

Han-yong

권소현

Ji-woo

장명운

Sang-il

Kim Young

Choon-ho

채원빈

Eun-ha

Park Geun-cheol

한수아

Yeon-ok

An Min-young

Teacher

오창경

Sang-il's father

정지철

Man

Oh Won-jae