"Did you feel bad about not having a handy ornament?"

Dam-I, who was castrated at a young age due to poverty and entered the palace to work as an apprentice eunuch. One day, the new crown prince, Mok-Yeong, the new Crown Prince whose mother was a lowborn courtesan, entered the palace to replace the Crown Prince who had died young from a chronic illness. After their unexpected first encounter, Mok-Yeong uses Dam-I as he pleases despite his pleas to be sent away from the palace—yet refuses to let him go for the sake of political intrigue. As the Crown Prince's royal bedchamber ceremony approaches, Mok-Yeong, unwilling to produce an illegitimate child, secretly brings Dam-I in as his practice partner...

(Source: Ridibooks, translated)