Bae Yong-jun

Kang Joonsang / Lee Minhyeong

Choi Ji-woo

Jeong Yoojin

Park Yong-ha

Kim Sanghyeok

Park Sol-mi

Oh Chaerin

Lee Hae-eun

Gong Jinsook

Ryu Seung-su

Kwon Yonggook

Song Ok-suk

Kang Mihee

Jeong Dong-hwan

Professor Kim Jinwoo

Kim Hae-sook

Yoojin’s mother

Jang Hang-seon

Supervisor Kim

Jung Won-joong

Teacher Park Jeongo

Ha Jae-yeong

Jeong Hyeonsoo

Lee Hyo-choon

Sanghyeok’s mother