So Long, See You Tomorrow

Sim Hee-seop

as

Dong-jun

Hong Xa-bin

as

Young Dong-jun

Shin Joo-hyup

as

Young Kang-hye...

Kim So-hee

as

Young Dong-hee

Kang Chae-yun

as

Yeong-ji 1

Kim Joo-ryoung

as

Dong-jun's Mot...

Kim Hak-seon

as

Dong-jun's Fat...

Kwon Ji-woo

as

Ju-ho

Ok Ji-young

as

Yun-ju

Kwon Dong-ho

as

Seong-il

Song Chang-eui

as

Kang-hyeon