Trailer
Cast
Kang So-ra
Young Choon-hwa
Hong Jin-hee
Jin-hee
Kim Si-hoo
Young Joon-ho / Joon-ho's Son
Kim Won-hae
Teacher
Go Joon
Private Detective
Jun Yoon-ji
Student Presenter at Festival
Lee Yeon-kyung
Geum-ok
Kim Hye-ok
Na-mi's Mother
Baek Jong-hak
Nami's Husband
Jung Won-joong
Na-mi's Father
Lee Kyung-young
Joon-ho
Park Soon-cheon
Woman in Past Picture
So Hee-jung
Homeroom Teacher
Han Seung-hyeon
Jung-mi's Older Brother
Yoo Ho-jeong
Na-mi
Jin Hee-kyung
Choon-hwa
Kim Bo-mi
Young Bok-hee
Ha Seung-lee
Ye-bin
Kim Yeong-ok
Na-mi's Grandmother
Kim Sae-byuk
Class Monitor
Kang Rae-yeon
Jong-ki's Girlfriend
Kim Ye-won
Girls' Generation Leader
Kim Min-young
Young Jang-mi
Park Jin-joo
Young Jin-hee
Kim Sun-kyung
Bok-hee
Jeong Seok-yong
Jong-ki
Ju Jin-mo
Sung-chan
Lee Sang-ah
Woman in Past Picture
Cha Tae-hyun
Insurance Company Main Model
Lee Jun-hyeok
President of Private Detective Office
Ahn Soo-ho
Judge
Yang Joo-ho
Insurance Company Branch Manager
Shim Eun-kyung
Young Na-mi
Park Young-seo
Young Jong-ki
Chun Woo-hee
Sang-mi
Bae Soo-kyung
Gang High School Girl
Nam Bo-ra
Young Geum-ok
Min Hyo-rin
Young Su-ji
Ryu Hye-rin
Girls' Generation Member
Yang Hee-kyung
Jang-mi's Mother
Eom Hye-soo
Sang-mi's Group
Koh Soo-hee
Jang-mi
Kwon Eun-soo
School Broadcasting Club DJ
Choi E-sun
Joon-ho's Friend
Sung Ji-ru
Choon-hwa's Lawyer