Rookie Historian Goo Hae-Ryung

Shin Se-kyung

as

Goo Hae-Ryung ...

Cha Eun-woo

as

Prince Yi Rim ...

Park Ki-woong

as

Lee Jin

Lee Ji-hoon

as

Min Woo-Won

Park Ji-hyun

as

Song Sa-Hee

Kong Jeong-hwan

as

Goo Jae-Kyung

Kim Min-sang

as

Lee Tae

Choi Deok-moon

as

Min Ik-Pyeong

Jeon Ik-ryoung

as

Mo-hwa

Kim Gwi-seon

as

Second Vice-Pr...

Lee Jung-ha

as

Kim Chi-gook