배용준

Kang Joonsang / Lee Minhyeong

최지우

Jeong Yoojin

박용하

Kim Sanghyeok

박솔미

Oh Chaerin

이혜은

Gong Jinsook

류승수

Kwon Yonggook

송옥숙

Kang Mihee

정동환

Professor Kim Jinwoo

김해숙

Yoojin’s mother

장항선

Supervisor Kim

Won-joong Jeong

Teacher Park Jeongo

하재영

Jeong Hyeonsoo

이효춘

Sanghyeok’s mother