Composer
Director
Screenwriter
Main Role
- Park Min Young Main Role
- Kim Jae Wook Main Role
Support Role
- Ahn Bo Hyun Support Role
- One Support Role
- Kim Bo Ra Support Role
- Park Jin Joo Support Role
- Kim Mi Kyung Support Role
- Maeng Sang Hoon Support Role
- Hong Seo Young Support Role
- Kim Sun Young Support Role
- Seo Ye Hwa Support Role
- Jung Won Chang Support Role
- Im Ji Kyu Support Role
- Yoo Yong Min Support Role
- Jung Shi Yool Support Role
Guest Role
- Lee Chae KyungChoi Eun Hye [Painter] (Ep. 1)Guest Role
- Kim Ho Chang[Ryan's psychiatrist] (Ep. 1)Guest Role
- Ariane Desgagnes-Leclerc[US Art Exhibit patron] (Ep. 1)Guest Role
- Han Hyun Uk[White Ocean member] (Ep. 1)Guest Role
- Hwang In Ho[White Ocean member] (Ep. 1)Guest Role
- Lee In Pyo[White Ocean member] (Ep. 1)Guest Role
- Jiahn[White Ocean member] (Ep. 1)Guest Role
- Choi Jae Sub[Duk Mi imagining autopsy] (Ep. 3)Guest Role
- Moon Hak Jin[Duk Mi imagining autopsy] (Ep. 3)Guest Role
- Ban Hye Young[Judo official] (Ep. 4)Guest Role
- Kim Young Ok[Duk Mi's grandmother] (Ep. 4)Guest Role
- Yeo Moo Young[Elder tried to run her down] (Ep. 4)Guest Role
- Hwang Geum ByulLatte [Shinagil's new member] (Ep. 5, 9)Guest Role
- Choi Na Moo[Fan-girl] (Ep. 6, 10)Guest Role
- Jung Soo Young[Fortune teller] (Ep. 7)Guest Role
- Park Seul Ki[Shi Ahn's fan meeting MC] (Ep. 7)Guest Role
- Yang Hee Jae[Eun Gi's gym 'yellow belt' student] (Ep. 7-8, 11)Guest Role
- Lee Hyo Bi[Child who drew Ryan Gold's face] (Ep. 12)Guest Role
- Lee Han WiMan Soo [Uhm So Hye's husband] (Ep. 16)Guest Role
- Kim Eun WooExecutive Secretary JangGuest Role
- Choi GoRyan Gold [Young]Guest Role
- Seo Sang WonNoh Suk [Novelist]Guest Role
- Yang Hee WonNam Eun Gi [Young]Guest Role
- Park So YiSung Duk Mi [Young]Guest Role
- Ahn Lu AhSung Deok Mi [Young]Guest Role
- Park Jin YoungAhn Myung Sub [Painter]Guest Role
- Park Myung ShinNam Se Yun [Eun Gi's mother]Guest Role
- Kim Dong HaMin Ho [Child who lost his father]Guest Role
- Gu Da SongMiss Kim Mo [Runs in front of Shi Ahn's van]Guest Role
- Lee Il HwaLee Sol / Gong Eun Young [Shi Ahn's and Ryan's mother]Guest Role
- Shin Yeon Mi[Shi Ahn's fan]Guest Role
- Kim Si Eun[Syanobbang]Guest Role
- Amy Aleha[Art collector]Guest Role
- Pyo Dong Jun[Judo gym kid]Guest Role
- Noreen Joyce Guerra[Cha Shi An fan]Guest Role
- Oh So Hyun[Cha Shi An fan]Guest Role
- Nam Seung Woo[Eun Gi’s friend]Guest Role
- Seo Ha Yoon[Playground girl]Guest Role
- Kim Yeon Seo[Orphanage girl]Guest Role
- Kim Mi Hye[Hotel employee]Guest Role
- Lee Na Hyun[Broadcast writer]Guest Role
- Kim Chang Ho[So Hye's assistant]Guest Role
- Kim Do Won[Judo gymnasium kid]Guest Role
- Jang Jae Ha[Judo gymnasium kid]Guest Role
- Choi Yoon Woo[Amusement park boy]Guest Role
- Kang Hak Soo[Furniture workshop staff]Guest Role
- Kim Oh Bok[Bartender] | [Eun Gi's fan]Guest Role
- Heo Seon Haeng[Cheum Art Museum security guard]Guest Role
- Jung Ye Nok[Girl who asks for Shi Ahn's picture]Guest Role
- Im Ga Young[Fan enraged over Shi Ahn's scandal]Guest Role
- Ahn Hyeon Bin[Detective questioning fangirl museum assault]Guest Role
Unknown
- Lee Sun Young Unknown
- Shin Tae Yang Unknown
- Chris Chan Unknown
- Kim Woo Bin Unknown
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