천국의 계단

Lee Ah-ro

Oh Yu-mi

安圣基

Kim Young-gyun

박찬환

Choi Myeong-gil

郑宝石

Kim Ho-seong

宋永彰

Lee Gyeong-sik

Eom Yu-shin

Grace Jo

전무송

Jeong Ki-seob

尹芮熙

Oh Yu-jeong

강리나

Kim Ah-young

김석옥

Yu-mi's Mother

崔宗元