Park Bo Gum portrays the tsundere (cold on the outside warm on the inside) crown prince Lee Young while Kim Yoo Jung’s character Hong Ra On is a female dressed up as a eunuch. However, in these character posters Kim Yoo Jung dons female clothing and shows her feminine beauty.
Furthermore, more details about their characters have been revealed. Park Bo Gum’s crown prince character is a playful but quite picky. Kim Yoo Jung’s character meets Lee Young in the court once again after being admitted as a eunuch. Their unlikely romance starts through their crown prince-eunuch relationship.