Nam Da-reum

as Young Jo-yoon

as Young Sun Woo-hae

as Han Do-kyung

as Park Young / Young Prince

as Young Yoon Na-Moo

as Young Jeong Jae-chan

as Kang Dong-seok (young)

as Young Gi Ha-myeong

as Prince Eunpyeong

as Young Yoon Ji-hoo