Lee Se-eun

as Go So-yeon

Choi Jae-sung

as Lee-mil

Son Tae-young

as Hong Bol-hwa

Yoo Dong-geun

as Yeon Gae Somun (older adult)

Lee Tae-gon

as Yeon Gae Somun (young adult)

Kim Kap-soo

as King Soo Yang Je

Lee Hyo-jeong

Sun Dong-hyuk

as Bang Hyo-tae

Choi Jong-hwan

as King Young-ryu

Hong Jin-young

as Herself