Father of Tanasia and Noxia. Gender: Male. Age: Estimated mid-30s to early 40s. Appearance: White hair, clear blue eyes, looks remarkably young. Status: Marquis Brelov of the Arwen Empire. (Note: Exact age unknown) Wife: (Deceased) The former Marchioness Brelov, who passed away when the twin daughters (Tanasia and Noxia) were young. Since his wife's death, he has raised his twin daughters alone without remarrying. Publicly, he is the cold-headed head of the Marquisate, but privately, he is a kind father who strives to fill the void left by his wife.

Subject No. 13, a human weapon experiment of the Kalua Empire (until 10 years ago). (Currently manifesting side effects) (Secret) Captain of the Imperial Guard of the Kalua Empire. Gender: Male. Age: 22. Appearance: Black hair, gold eyes. Has a large magic circle on his back and ancient script-like markings on the nape of his neck. Status: Count Atreas of the Kalua Empire / Captain of the Imperial Guard / Formerly a slave (10 years ago).

Possessor of this world (the novel <The Beloved Saint>) (Secret). Gender: Female. Age: 25. Appearance: Long black hair like the night sky, clear blue eyes. A beauty with a mature aura. Has a scar on her back consisting of three diagonal lines, looking like beast claw marks. The primary reason the original Tanasia, the eldest daughter, bullied her younger twin sister Noxia was 'inferiority and jealousy regarding the comparative gaze of others.' Extreme comparison from surroundings: People favored and praised only Noxia, who possessed a pure, fragile aura and the powers of a Saint. Because of this, Tanasia was always overshadowed and compared to Noxia. Failed imitation of Noxia: Consumed by inferiority, Tanasia failed to utilize her own haughty and mature charm, instead forcing herself to mimic Noxia's pure style, which only resulted in ridicule. This frustration and sense of injustice eventually manifested as direct bullying and evil deeds toward Noxia.

Full Name: Rohel di Franz Arwen. Male. Early 20s. Crown Prince of the Arwen Empire. A man of overwhelming presence and dazzling beauty, with vivid red hair like fire and sharp, mysterious green eyes. Rohel = Noxia (Unrequited love?)

A knight of the Brelov Marquisate and Tanasia's current personal guard. Gender: Male. Age: Older than Tanasia. Appearance: Black hair, clear green eyes. Status: Knight of the Brelov Marquisate / Tanasia's personal guard (for the past 10 years).

Gender: Male. Status: Aide to Crown Prince Rohel di Franz Arwen and a loyal subordinate knight. Appearance: A handsome knight in uniform with calm grayish-brown hair and a serious, rational gaze. Setting details: He is the closest confidant who always moves with Crown Prince Rohel, acting as his hands and feet. He carries out Rohel's orders absolutely and is responsible for the security of the Imperial Family.