Forbidden Quest

Han Suk-kyu

Yun-seo

Kim Min-joung

Queen Jeong-bin

Lee Beom-soo

King Gwang-heon

Oh Dal-su

Hwang

Kim Roi-ha

Eunuch Jo

Kim Byeong-ok

Deputy prime minister

Ahn Nae-sang

King

Lee Soon-jae

Yun-seo's father

Oh Tae-kyung

Jeong-seo

Woo Hyeon

Transcriber

Kim Ki-hyeon

Writer

Jeon Soo-hwan

Senior

Jung In-gi

Colleague

Yoon Sang-hwa

Excellency

Jin Kyung

Yun-seo's wife

Hong Gyo-jin

Eunuch

Ra Mi-ran

Ma'am

Park Hyuk-kwon

Warder

Im Hyeong-taek

Doctor

Sim San

Dealer

Cho Ryun

Ma'am

Yeon Bo-ra

Senior Court Lady