Trailer
Cast
고준
Private Detective
Kwon Eun-soo
School Broadcasting Club DJ
엄혜수
Sang-mi's Group
Lee Kyung-young
Joon-ho
심은경
Young Na-mi
홍진희
Jin-hee
김보미
Young Bok-hee
민효린
Young Su-ji
강래연
Jong-ki's Girlfriend
Bae Soo-kyung
Gang High School Girl
Chun Woo-hee
Sang-mi
차태현
Insurance Company Main Model
안수호
Judge
Jun Yoon-ji
Student Presenter at Festival
남보라
Young Geum-ok
김새벽
Class Monitor
Lee Jun-hyeok
President of Private Detective Office
Han Seung-hyeon
Jung-mi's Older Brother
Choi E-sun
Joon-ho's Friend
김민영
Young Jang-mi
정석용
Jong-ki
Kim Won-hae
Teacher
성지루
Choon-hwa's Lawyer
강소라
Young Choon-hwa
고수희
Jang-mi
박진주
Young Jin-hee
이연경
Geum-ok
김선경
Bok-hee
김예원
Girls' Generation Leader
박순천
Woman in Past Picture
진희경
Choon-hwa
Kim Yeong-ok
Na-mi's Grandmother
정원중
Na-mi's Father
류혜린
Girls' Generation Member
소희정
Homeroom Teacher
양희경
Jang-mi's Mother
Shi-hoo Kim
Young Joon-ho / Joon-ho's Son
박영서
Young Jong-ki
하승리
Ye-bin
주진모
Sung-chan
Yang Joo-ho
Insurance Company Branch Manager
이상아
Woman in Past Picture
유호정
Na-mi
김혜옥
Na-mi's Mother
백종학
Nami's Husband