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Jang Keun-suk
Sa Do-Chan / Baek Joon-Soo
Han Yeri
Oh Ha-Ra
Jung Woong-in
Geum Tae-Woong
Jo Hee-bong
Director Bong
Shin Do-hyun
So Eun-Ji
An Seung-Hwan
Jeon In-Tae
Lee Jeong-kil
Choi Jung-Pil
Kim Seo-ra
Ha-Ra's mother
Cha Yeob
Investigator Go
Choi Jae-won
Jung Do-Young
Go Wook
Manager Kim
Park Won-sang
Yang Ji-Soong
Lee Sae-bom
Kang Mi-ran
Lee Ju-yeon
Oh So-ra
Son Byung-ho
Sa Ma Chun