Ryu Jun-yeol
Cheon Gyeong-su
A blind acupuncturist, who strangely, is able to see normally at night, and happens to witness the death of the crown prince.
Olppaemi
Cheon Gyeong-su
King Injo
Lee Hyeong-ik
Lord Choi
Man-sik
Crown Prince Sohyeon
Consort Jo
Crown Princess Kang
Seok-cheol
Court Lady Seo
Captain of the guard
Senior physician
Vassal 1
Third Royal Secretary
Envoy of Qing Dynasty
Vassal 2
General
Court Lady Choi
Gyeong-jae
Physician 1
Director
