Son Ye-jin as Princess Deok-hye

Park Hae-il as Kim Jang-han

Ra Mi-ran as Bok-soon

Jung Sang-hoon as Bok-dong

Kim So-hyun as Teenage Deok-hye

Baek Yoon-sik as Gojong of Korea

Park Joo-mi as Yang Gwi-in

Ahn Nae-sang as Kim Hwang-jin

Naho Toda as Lee Bang-ja

Yoon Je-moon as Han Taek-soo

Kim Jae-wook as Takeyuki So

Yeo Hoi-hyeon as Teenage Jang-han

Shin Rin-a as Young Deok-hye

Lee Hyo-je as Young Jang-han

Kim Dae-myung as Kim Bong-guk

Geum Sae-rok as Park Ju-ok

Go Soo as Prince Lee Woo

Akiba Rie as Matsuzawa

Kim Na-yeon as Nursery School Child

Kim Seung-hoon as Mr. Park

Lee Chae-eun as Jeong-hye

Kim Ki-cheon as Park Gwi-jung

Kwak Ji-hyun as Students' Association Vice-Chairman