Pełna obsada
유호정
Na-mi
심은경
Young Na-mi
진희경
Choon-hwa
강소라
Young Choon-hwa
고수희
Jang-mi
김민영
Young Jang-mi
홍진희
Jin-hee
박진주
Young Jin-hee
이연경
Geum-ok
남보라
Young Geum-ok
김선경
Bok-hee
김보미
Young Bok-hee
민효린
Young Su-ji
김시후
Young Joon-ho / Joon-ho's Son
박영서
Young Jong-ki
천우희
Sang-mi
김혜옥
Na-mi's Mother
정석용
Jong-ki
하승리
Ye-bin
김영옥
Na-mi's Grandmother
백종학
Nami's Husband
정원중
Na-mi's Father
김원해
Teacher
김새벽
Class Monitor
Kang Rae-yeon
Jong-ki's Girlfriend
김예원
Girls' Generation Leader
류혜린
Girls' Generation Member
이경영
Joon-ho
Hwang Choon-ha
Past Detective
Bae Soo-kyung
Gang High School Girl
박순천
Woman in Past Picture
소희정
Homeroom Teacher
차태현
Insurance Company Main Model
이준혁
President of Private Detective Office
Han Seung-hyeon
Jung-mi's Older Brother
양희경
Jang-mi's Mother
주진모
Sung-chan
Park Hee-jeong
Young-jin
고준
Private Detective
Kwon Eun-soo
School Broadcasting Club DJ
최이선
Joon-ho's Friend
성지루
Choon-hwa's Lawyer
엄혜수
Sang-mi's Group
안수호
JudgeYoon Jung
Su-ji
Jun Yoon-ji
Student Presenter at FestivalChoi Soo-im
Bully Female Student
Yang Joo-ho
Insurance Company Branch Manager
이상아
Woman in Past PictureLee Seung-heon
Joon-ho's Friend
