배용준

Kang Joon-sang

최지우

Jeong Yoo-jin

박용하

Kim Sang-hyeok

박솔미

Oh Chae-rin

이혜은

Gong Jin-sook

류승수

Kwon Yong-gook

송옥숙

Kang Mi-hee

정동환

Professor Kim Jin-woo

Kim Hae-sook

Yoo-jin's Mother

장항선

Supervisor Kim

정원중

Teacher Park Jeong-o

하재영

Jeong Hyeon-soo

이효춘

Sang-hyeok's Mother