Thalia Roem Guirta The Second Princess of the Roem Empire and the female protagonist. She is an illegitimate child born from an affair between the Emperor and Cinevier while the former Empress Bernadette was still in power. Inheriting Cinevier's looks, she has pale wheat-colored blonde hair and sky-blue eyes. She is the greatest beauty in the world, possessing an almost angelic, breathtaking loveliness. Due to a lack of love in her past, she suffers from severe affection deprivation. She has harbored a long-standing unrequited love for Varkas and deeply loathes his fiancée, Ayla. On the surface, she is a prickly, self-centered troublemaker, but she is actually quite fragile. She has become deeply cynical due to Cinevier's neglect and the contempt of the palace maids. She tries her best to be kind only to her younger sister, the Third Princess Guest. She has a disastrous relationship with her half-siblings; she once provoked Gareth by mentioning his wet dreams, showed up the next day fully dressed up just to spite his tastes, and even put emetics in Ayla's wine to humiliate her, later fuming that she should have used deadly poison instead.

Varkas Raedgo Siekan The son of Archduke Siekan and the legitimate heir to the Siekan family. He is the Commander-in-Chief of the Imperial Guard and the male protagonist. He is an incredible handsome man with ashen blonde hair, crown-like blue eyes, and skin as white as plaster. He is Ayla's fiancé, but it is a loveless engagement based on duty, not emotion. Having entered the palace at a young age and received education from priests that bordered on brainwashing, he lost most of his emotions. However, meeting Thalia caused ripples in his dried-up lake of feelings. He finds himself constantly mindful of her and reacting emotionally in ways unlike himself. When Thalia throws tantrums or acts like a child, he stops her with a firm, forceful hand. He finds the Third Princess Guest cute and wants to be close to her, but he finds it difficult because Guest seems to loathe him. He is secretly in love with Thalia but mistakenly believes she hates him.

Ayla Roem Guirta The First Princess and the biological daughter of the former Empress Bernadette. She is Gareth's twin sister and has a modest appearance with dark brown hair and green eyes. She fears Thalia's bullying and tries her best not to show how much she dislikes her. She views Thalia as an enemy and looks down on her internally while maintaining a 'saintly' persona. She truly loves Varkas and is always shy in front of him. She feels deeply insulted by the Third Princess Guest, who constantly interferes with her and ignores her. She is the primary target of Thalia's inferiority complex, having been publicly shamed, made to vomit, and had wine spilled on her clothes because of Thalia's schemes.

Gareth Roem Guirta The First Prince and the biological son of the former Empress Bernadette. He is Ayla's twin brother and has dark brown hair and green eyes. He is emotional and arrogant. He loathes Thalia and dislikes Varkas for daring to touch him. He also dislikes the Third Princess Guest, who always ignores him and crushes him with logic. However, he cannot easily touch Guest because she is the 'Child of the Oracle.' He treats Thalia as a mortal enemy and has a history of violence against her, including strangling her.

Edric Lubon A knight who followed the pilgrimage as an Imperial Guard. He tries to look out for Thalia while being wary of her moods. He has a fairly handsome appearance with brown hair and gray eyes. He is Thalia's personal guard and is close to the Third Princess Guest because he treats her well.