100 Days My Prince (2018): Where to Watch, Cast & Facts
An evergreen, sourced guide to 100 Days My Prince: streaming options, cast and core facts.

Here's the full cast of 100 Days My Prince (2018) — who plays who — plus where to watch and the essential facts about this TV series. I will marry you someday.
Where to watch
TMDB's U.S. watch-provider data lists Netflix, Rakuten Viki, Netflix Standard with Ads. Availability changes by country and date, so check your streaming app before watching.
Cast
Doh Kyung-soo as Crown Prince Lee Yool / Won-deuk; Nam Ji-hyun as Hong-sim / Yoon Yi-seo; Cho Seong-ha as Kim Cha-eon; Cho Han-cheul as King; Oh Yeon-ah as Queen Park; Ji Min-hyuk as Prince Seo-won; Kim Seon-ho as Jung Je-yoon; Jung Hae-kyun as Hong-sim's Stepfather
About 100 Days My Prince
Lee Yool falls off a cliff and nearly dies in an attempted assassination. He loses his memory, and wanders for 100 days under a new name and personality. During this period, he meets Hong Sim, head of the first detective agency in Joseon.
More like 100 Days My Prince
- Rooftop Prince
- Mr. Queen
- My Dearest
- Shakespeare & Hathaway - Private Investigators
- Dong Yi
- The Matchmakers
- Veronica Mars
- John Doe
Figures and availability come from public TMDB data and are provided as a sourced reference.
Frequently asked questions
Where can I watch 100 Days My Prince?
TMDB's U.S. watch-provider data lists Netflix, Rakuten Viki, Netflix Standard with Ads. Availability changes by country and date, so check your streaming app before watching.
Who is in the cast of 100 Days My Prince?
Doh Kyung-soo as Crown Prince Lee Yool / Won-deuk; Nam Ji-hyun as Hong-sim / Yoon Yi-seo; Cho Seong-ha as Kim Cha-eon; Cho Han-cheul as King; Oh Yeon-ah as Queen Park; Ji Min-hyuk as Prince Seo-won; Kim Seon-ho as Jung Je-yoon; Jung Hae-kyun as Hong-sim's Stepfather
Is this 100 Days My Prince guide official?
No. It uses TMDB data as a reference and is not endorsed or certified by TMDB.



