써니

유호정

Na-mi

심은경

Young Na-mi

진희경

Choon-hwa

강소라

Young Choon-hwa

고수희

Jang-mi

Кім Мін Йон

Young Jang-mi

홍진희

Jin-hee

Пак Джін Джу

Young Jin-hee

이연경

Geum-ok

남보라

Young Geum-ok

김선경

Bok-hee

Кім Бо Мі

Young Bok-hee

민효린

Young Su-ji

김시후

Young Joon-ho / Joon-ho's Son

박영서

Young Jong-ki

천우희

Sang-mi

Кім Хє Ок

Na-mi's Mother

Чон Сок Йон

Jong-ki

하승리

Ye-bin

Кім Йон Ок

Na-mi's Grandmother

백종학

Nami's Husband

정원중

Na-mi's Father

Кім Вон Хе

Teacher

김새벽

Class Monitor

강래연

Jong-ki's Girlfriend

Кім Є Вон

Girls' Generation Leader

류혜린

Girls' Generation Member

Лі Кьон Йон

Joon-ho

N/A

황춘하

Past Detective

Bae Soo-kyung

Gang High School Girl

Пак Сун Чхон

Woman in Past Picture

Со Хі Джон

Homeroom Teacher

차태현

Insurance Company Main Model

Лі Джун-хьок

President of Private Detective Office

Han Seung-hyeon

Jung-mi's Older Brother

양희경

Jang-mi's Mother

주진모

Sung-chan

박희정

Young-jin

Ко Джун

Private Detective

Kwon Eun-soo

School Broadcasting Club DJ

Чхве И Сун

Joon-ho's Friend

성지루

Choon-hwa's Lawyer

Ом Хє Су

Sang-mi's Group

안수호

Judge

N/A

윤정

Su-ji

Jun Yoon-ji

Student Presenter at Festival

N/A

Choi Soo-im

Bully Female Student

Yang Joo-ho

Insurance Company Branch Manager

이상아

Woman in Past Picture

N/A

Lee Seung-heon

Joon-ho's Friend

N/A

강지원

Su-ji's mother