Sae-hee
Sun-il (as Kim Jung Tae)
Hyun-ji (as Hye-Lin Han)
Hae-chul
Na-ra (as Min Ha Ju)
Sung-hee (as Da-Yeong Ju)
Ki-tae (as Kwak Jung Wook)
Homeroom Teacher (as Ah-Hyeon Lee)
Sae-hee's Father (as Choong-Sun Park)
Ah-young's Mother (as Yoon-Hong Oh)
Ho-sub
Hye-jeong (as Bom Lee)
Seung-hyeon
Warehouse Ghost
Detective Jeong
Dean of Students
Ah-yeong's Father
Yong-joon
One-Piece Dress Ghost
Visually Impaired Woman (as Seul-ah Lee)
Drunk Woman
Elementary School Vice-Principal
Male Student Hottie 1
Male Student Hottie 2
Male Student Hottie 3
Drunk Man
Detective Park
Police
Reporter
Ah-yeong's Murderer
Dress Killer
Detective Seo
Detective Kim
Paramedic 1 (as Jae-hoon Jeong)
Paramedic 2
Teacher in the Last Scene
Seung-ae
In-su (Young)
Se-hee (Young)
Ah-young
Hae-cheol (Young)
Little Kid Ghost
Sae-hee Stand-in
Ghost Band Sound
Oong Chi
Student (Typhoon Entertainment)
Student (J Academy) (as Yoo-Yeong Kim)
Student (J Academy)
Student
Student (as Eun-yeong Kim)
Last Ghost (as Soo-jin Kyung)
Elementary Teacher (as Ka-Eun Jung)
Ahn Sang-soon
In-su