저 하늘에도 슬픔이

Kim Yoo-nah

as Yun-suk

Park Nam

as Yun-sik

Park So-yeong

as Sun-na

Kim In-jeong

as Ok-i

Park Soon-cheon

as Mother

Yoon Cheol-hyeong

as Father

Ryu Mi-oh

as Vice Principal

Kim Hyeong-il

as Publisher

Baek Il-seob

as Gyeong-su's Father

Kim Chung-ran

as Gyeong-su's Mother

Yeo Un-gye

as Doctor

Jeong Hye-seon

as Principal

Jeon Won-joo

as School Parent

Hong Yun-jeong

as Loan Shark

Kim Il-woo

as Dispatcher

Hwang Min

as Korean Teacher

Seo Chang-sook

as Class Teacher

Lee Dae-ro

as Grandfather

Han Young-su

as Yun-sik's Class Teacher

Lim Sun-taeg

as MC

Kim Hye-yeong

as MC