Sunny

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 강래연 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 박희정 Young-jin 고준 Private Detective Kwon Eun-soo School Broadcasting Club DJ Choi E-sun Joon-ho's Friend 성지루 Choon-hwa's Lawyer 엄혜수 Sang-mi's Group 안수호 Judge Yoon Jung Su-ji Jun Yoon-ji Student Presenter at Festival Choi Soo-im Bully Female Student Yang Joo-ho Insurance Company Branch Manager 이상아 Woman in Past Picture Lee Seung-heon Joon-ho's Friend 강지원 Su-ji's mother