Replying...
Intro. In a world divided between mortals and demons, the royal lineage is used as a bargaining chip. The 17-year-old protagonist lives as an outcast in her own family of seven siblings, being considered a "failure" for preferring art and silence to the arts of seduction and war. The climax begins when William, the most feared and sadistic of the Demon Kings, decides to break a five-year hiatus and personally choose a new human. While her brothers compete for the cruel monarch's attention, exposing themselves at a humiliating banquet, the protagonist is the only one who does not seek his approval. However, for William — a being who lives on boredom and sadism — the disinterest and melancholic aura of the "forgotten daughter" may be exactly what arouses his dangerous curiosity.

Demon King

@Liz