Talia Roem Guirta The female protagonist of this work. She is the illegitimate daughter born between the Emperor of the Roem Empire and his mistress, Senevier, while the Empress Bernadette was already six years into her marriage and pregnant. After Bernadette's death, her mother Senevier became the Empress, elevating Talia to the status of the Second Princess of the Roem Empire. She has deep blue eyes and pale wheat-colored tawny blonde hair. As a doppelganger of her mother Senevier, she is the greatest beauty in the world, but perhaps due to her origins and the abuse she suffered, her personality is cold and filled with inferiority toward her half-siblings. Her psychological descriptions often involve impulses like regretting not putting deadly poison in Ayla's cup or wanting to gouge eyes out with her fingernails; she even secretly carries a knife to murder Ayla. Her sharp tongue is truly chilling; for instance, she brings up Gareth's wet dream, claiming she knows who appeared in it, and the next day dresses up flamboyantly, remarking that she put in effort to match Gareth's tastes. However, considering that her half-brother Gareth has bullied her since childhood to the point of choking her simply because she is the child of his enemy Senevier, that the maids and servants ignore her as a bastard, and that her own mother Senevier only thinks of using her politically, it is perhaps natural that her personality is broken. She is madly in love with Barcas and hates Ayla.

Barcas Raedgo Siekan The male protagonist of this work. A handsome man with pale blonde hair tinged with ash, blue eyes, and plaster-white skin, he is a knight belonging to the Imperial Knights. He is currently engaged to the First Princess, Ayla. His personality is extremely emotionless and blunt, but he shows extreme hostility toward Talia to the point of baring his teeth if his pride is touched or if it concerns her. It is presumed he suffered severe abuse as well, described as having his emotions severed. He is Guest's childhood friend. Since the age of eight, he has met Guest as a secret friend under the chestnut tree in the imperial palace. Because they met at night wearing ropes or cloaks, they do not know each other's true identities.

Gareth Roem Guirta The Crown Prince of the Roem Empire, born to the late Empress Bernadette. He is Ayla's twin brother and Talia's half-brother. He has black hair and green eyes. He has a very hot-tempered and arrogant personality. He hates Talia and considers her an eyesore because she is the daughter of Senevier, who caused his mother Bernadette to be abandoned by the Emperor and took the position of Empress as soon as his mother died. While Senevier's actions toward Bernadette were clearly evil and he has reason to hold a grudge for his mother's early death due to heartache, he is criticized for bullying the innocent Talia while being unable to defy his father, the true root of all evil. According to Talia's memories, he has ruthlessly assaulted her since she first entered his mother's garden as a child, and scenes of him choking her whenever she annoys him appear frequently, showing his burning animosity.

Ayla Roem Guirta The First Princess of the Roem Empire, born to the late Empress Bernadette. She is Gareth's twin sister and Talia's half-sister. She has dark brown hair and green eyes. She is engaged to Barcas and is the primary object of Talia's inferiority complex, often falling victim to Talia's schemes—such as being made to vomit, having wine spilled on her clothes, or being cursed at. She is depicted as having significant political sense, showing a calmer grasp of situations than her twin Gareth. Thanks to this, unlike Gareth, she enjoys a good reputation and standing among the people. She is the only person who can calm Gareth when he explodes in a fit of rage, and the bond between the siblings is strong. However, Ayla is also poorly regarded by readers because, while less extreme than Gareth, she internally labels her half-sister Talia as a filthy bastard and an inferior being while acting like a saint. She also shifts the blame for her mother Bernadette's death solely onto Senevier and Talia rather than her father. Still, she receives less criticism than Gareth because, aside from a mistake in their childhood, she has rarely bullied Talia physically or mentally.

Senevier Talia's biological mother and the current Empress of the Roem Empire. Before becoming Empress, she was the Emperor's mistress. Even while the late Empress Bernadette was pregnant, she engaged in an open affair and eventually married the Emperor to take the Empress's seat immediately after Bernadette died. She is cunning and a master of palace intrigue, a terrible parent who views her own child, Talia, only as a political tool to strengthen her position. Even as Empress, she holds the Emperor firmly in her grasp and has given birth to a son in addition to Talia. While she is hated as a mortal enemy by Gareth and Ayla, she is a self-made figure who rose from the bottom to her current status, boasting the best intellect among the characters when it comes to political warfare and court intrigue.