Kim Soo Hyun
Do Min Joon
Papel Principal
Jun Ji Hyun
Cheon Song Yi
Papel Principal
Park Hae Jin
Lee Hui Kyung
Papel Principal
Yoo In Na
Yoo Se Mi
Papel Principal

Shin Sung Rok
Lee Jae Kyung [Hee Kyung's brother]
Papel Secundário
Kim Chang Wan
Jang Young Mok [Min Joon's friend]
Papel Secundário
Na Young Hee
Yang Mi Yeon [Song Yi's mother]
Papel Secundário
Ahn Jae Hyun
Cheon Yoon Jae [Song Yi's younger brother]
Papel Secundário
Uhm Hyo Sub
Cheon Min Goo [Song Yi's father]
Papel Secundário
Oh Sang Jin
Prosecutor Yoo Suk [Se Mi's older brother]
Papel Secundário
Kim Hee Won
Detective Park Byung Hee
Papel Secundário
Kim Kang Hyun
Yoon Bum [Song Yi's manager]
Papel Secundário
Kim Bo Mi
Min Ah [Song Yi's stylist]
Papel Secundário
Jo Hee Bong
President Ahn Dong Min [CEO of Song Yi's management agency]
Papel Secundário
Hong Jin Kyung
Hong Hye In / Hong Bok Ja [Song Yi's high school classmate]
Papel Secundário
Lee Jung Gil
Lee Bum Joong [Hee Kyung's father]
Papel Secundário
Sung Byung Sook
Hong Eun Ah [Hee Kyung's mother]
Papel Secundário
Lee Il Hwa
Han Sun Yeong [Se Mi's mother]
Papel Secundário
Lee Yi Kyung
Lee Shin [Jae Kyung's secretary]
Papel Secundário
Kim Hyun Soo
Cheon Song Yi [Young] / Seo Yi Hwa
Papel Secundário
Yoo In Young
Han Yoo Ra
Papel Secundário
Jo Seung Hyun
Lee Hee Kyung [Young]
Papel Secundário
Jo Se Ho
Cheol Soo
Papel Secundário
Nam Chang Hee
Hyuk
Papel Secundário

Jung Ji Soon
Manager Moon [Se Mi's manager] (Ep. 1, 4)
Convidado
Chuk Jae Hee
[Min Joon's colleague] (Ep. 1, 4, 9)
Convidado
Choi Dae Sung
[Min Joon's colleague] (Ep. 1, 4, 9)
Convidado
Jang Sung Bum
[Production crew] (Ep. 1, 5-7)
Convidado
Yoo Joon Sang
Section Chief Yoo (Ep. 2-3)
Convidado
Serri
[Junior actress] (Ep. 3)
Convidado
Yoo Jang Young
[Doctor] (Ep. 3)
Convidado
Kim Hye Won
Yoo Se Mi [Young] (Ep. 3, 6, 8)
Convidado
Park Jung Ah
Noh Seo Yeong [Bride] (Ep. 4)
Convidado
Jang Hang Joon
Park Min Kyu [Director] (Ep. 4)
Convidado
Son Eun Seo
Hwang Jin Yi [Gisaeng] (Ep. 4)
Convidado
Lee Geum Ju
[Yi Hwa's mother] (Ep. 4-5)
Convidado
Jin Hyun Kwang
Kim Hyuk Soo [Daehan Daily Reporter] (Ep. 4-6)
Convidado
Choi Min
[Detective] (Ep. 5)
Convidado
Kim Soo Ro
Lee Hyung Wook (Ep. 5)
Convidado
Han Seo Yeon
Han Yoo Seon [Yoo Ra's sister] (Ep. 5, 10)
Convidado
Kim Hyo Myung
[Gas station guy] (Ep. 6)
Convidado
Choi Woong
[Han Yoo Ra's fan] (Ep. 7)
Convidado
Kim Tae Young
[Song Yi's doctor] (Ep. 8)
Convidado
Kim Yoon Tae
[Interrogation Detective] (Ep. 7-8)
Convidado
Kim Hae In
Yang Min Joo [Jae Kyung's ex-wife] (Ep. 7, 17-19)
Convidado
Jeon Jin Seo
Cheon Yoon Jae [Young] (Ep. 9)
Convidado
Park Young Gyu
[Doctor in Joeson era] (Ep. 11)
Convidado
Jung Eun Pyo
Yoon Sung Dong [Joseon realtor](Ep.6) / Yoon Sung Dong's descendant [Realtor] (Ep. 12)
Convidado
Lee Ja Min
[Nurse in mental hospital] (Ep. 14, 17)
Convidado
Bae Suzy
Go Hye Mi [Min Joon's student] (Ep. 17)
Convidado
Yeon Woo Jin
Lee Han Kyung [Hee Kyung's eldest brother] (Ep. 18)
Convidado
Ryu Seung Ryong
Heo Gyun [Joseon poet] (Ep. 19)
Convidado
Yang Joo Ho
Wang Jae Soo (Ep. 20)
Convidado
Sandara Park
[Actress] (Ep. 21)
Convidado
Kim Won Joon
[Actor] (Ep. 21)
Convidado
Jo Woo Jin
Heo Jun's assistant [Joseon era]
Convidado
Kim Kyul
[Doctor of emergency room]
Convidado
Song Tao
Zhang Ti Wei
Convidado
Jung Myung Joon
[Laments about getting old]
Convidado
Yoon Chae Eun
Ye Dam
Convidado
Kim Sung Ho
[Cinematographer]
Convidado
Jo Seung Yun
Kim Geun Su [Assistant prosecutor general] (Ep. 16)
Convidado
Choi Hyo Eun
Hyo Na
Convidado
Ji Sang Hyeok Convidado