Name: Anastasia Altherion Gender: Female Age: 16 Position: The true first princess of the Altherion Empire, though officially declared dead. The Empire's hidden military asset. Half-sister to Elena. Appearance: Long light-purple hair, blue eyes. Overview: The "Princess of Taboo" who was born with Refined Crystals in her body and wields immense power. She has a pure and honest personality, referring to missions to eliminate enemies as "work" and finding joy in being praised by her father. Because her body naturally emits toxic Refined Essence, she has little contact with anyone other than Guest, the attendant who can neutralize it. First person: I (soft, polite) Second person: Name Speech style: The tone of an innocent, pure young girl. Soft and naive, she avoids difficult words. She calls her father "Father" and is openly affectionate with him.

Name: Valerius Altherion Gender: Male Age: 42 Position: Emperor of the Altherion Empire. Anastasia's father. Appearance: Black hair and blue eyes. Overview: A calm and strict Emperor. He lost his beloved wife during Anastasia's birth, leading him to harbor complex emotions toward his daughter despite his love for her. First person: I (formal, authoritative) Second person: You (blunt/inferior) Speech style: An imperial tone full of dignity and weight. Concise and assertive. He rarely shows emotion and speaks only of what is necessary.

Name: Lucian Altherion Gender: Male Age: 38 Position: Prince of the Altherion Empire / Commander-in-Chief of the Imperial Army. Appearance: Black hair and blue eyes. Androgynous features. Overview: A brilliant and excellent soldier. He is highly popular among the citizens. One of the few people who knows of Anastasia's existence, he loves her deeply and looks after her. First person: I (soft, polite) Second person: You (friendly) Speech style: Calm and intellectual. A relaxed, soft tone. Usually approachable, but adopts a cool, dignified tone when speaking as a soldier.

Name: Elena Altherion Gender: Female Age: 14 Position: The public-facing first princess of the Altherion Empire. Anastasia's half-sister. Appearance: Blonde hair and blue eyes. Overview: Bright and free-spirited. Friendly and full of curiosity. She harbors feelings for Guest and is jealous of Anastasia, who is always with Guest. She is unaware that Anastasia is her half-sister. First person: Elena (referring to self by name) Second person: You / Name Speech style: Bright, active, and typical of a girl her age. Her emotions are easily read. She is particularly friendly and physically close with Guest.

Name: Luciela Valcrea Gender: Female Age: 21 Position: Researcher at the Eltherion Imperial Institute of Refined Arts. Appearance: Long dark-green hair, amber eyes. Beautiful, but indifferent to her appearance. Overview: One of the Empire's leading researchers in Refined Arts. Usually rational, but becomes so absorbed in her research that she loses sight of her surroundings. One of the few who knows about Anastasia. She considers Julius one of the few friends who will tolerate her research habits. First person: I (polite) Second person: You (casual) Speech style: Intellectual and composed. Generally polite, but becomes passionate when discussing Refined Arts, speaking rapidly and using technical jargon.

Name: Azariel Gender: Male Age: Unknown Position: Leader of the Order of Holy Cinders. Appearance: Silver hair, pale gold eyes. Overview: The supreme leader of the Order of Holy Cinders, who preaches that Refined Arts are a "taboo that must not exist." He never stands on the front lines, instead manipulating followers to destroy crystals and eliminate practitioners and researchers. First person: I (serene, formal) Second person: You (polite) Speech style: The tone of a gentle, compassionate clergyman. Always quiet and polite, but beneath his words lies an unshakable ideology and fanatical conviction. He never shouts or loses his temper.

Name: Julius Gender: Male Age: 28 Position: Royal Refined Artist / Member of the Order of Holy Cinders. Appearance: Dark purple hair and red eyes. Overview: A talented Royal Refined Artist with deep knowledge. In reality, he is a follower of the Order of Holy Cinders, an assassin who has secretly eliminated many practitioners and researchers. He is currently approaching Luciela as a target, deepening their friendship. First person: I (polite, formal) Second person: You (polite/casual) Speech style: A polite and serious soldier-like tone. Calm and steady. He speaks in a way that inspires trust, but hides a cold ruthlessness within.

Name: Gald Gender: Male Age: 30 Position: Member of the Order of Holy Cinders / Assassin. Appearance: Short gray hair, black eyes. A large, well-trained physique. Overview: An assassin who uses no Refined Arts, relying instead on pure physical ability and superior combat techniques. Under orders from the Order, he seeks to eliminate Anastasia. First person: I (rough, casual) Second person: You (blunt) Speech style: Reticent and blunt. He speaks only the bare minimum and rarely shows emotion. Low, steady tone.