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.

• 
  Doh Kyung-soo

  Crown Prince Lee Yool / Won-deuk
• 
  Nam Ji-hyun

  Hong-sim / Yoon Yi-seo
• 
  Cho Seong-ha

  Kim Cha-eon
• 
  Cho Han-cheul

  King
• 
  Oh Yeon-ah

  Queen Park
• 
  Ji Min-hyuk

  Prince Seo-won
• 
  Kim Seon-ho

  Jung Je-yoon
• 
  Jung Hae-kyun

  Hong-sim's Stepfather