All Cast
Park Bo-young
Se-Hee
Joo Won
Joon-Hyuk
Kang Byul
Jung-Mi
Kim Min-hyuk
Detective Kim
Lee Marg-Eum
girl
Kang Hae-In
cutie
Kwon Nam-hee
girl's mother
Jeong Dong-gyoo
Se-Hee's father
Choi Ji-Hun
Ji-Hun
Nam Kyung-eup
Detective Jang
Min Young
homeroom teacher (uncredited)