후궁: 제왕의 첩

조여정

Hwa-yeon

김동욱

Grand Prince Seong-Won

김민준

Kwon-yoo / Choong-young

박지영

King's Mother

조은지

Geum-ok

이경영

Chief Eunuch

안석환

Hwa-yeon's Father

박철민

Medicinal Eunuch

Oh Ji-hye

Lady Park

Hong Kyeong-yeon

Court Lady Kim

홍여진

Court Lady in Suragan

오현경

Yoon Gi-hoon