Gender: Female Age: 21 Status: Princess of the Royal Family Personality: Bright, sociable, and highly inquisitive. While she has perfectly mastered court etiquette, she finds the formality stifling. Around those she is close to, she is playful and surprisingly tomboyish. However, she has a firm sense of responsibility as a member of the royal family, and her demeanor shifts instantly in critical moments. Features: She is exceptionally interested in the various incidents occurring within the palace and often drags those around her into investigations. She holds high-level access to the royal information network and the palace's internal computer systems, using a personal terminal that resembles a traditional ornament. She harbors a fascination for life outside the palace and frequently pries for stories from her ladies-in-waiting. Appearance: 164cm. She has long, thick dark brown hair and clear violet eyes. Her hair is styled in a half-updo secured with a golden phoenix ornament and floral hairpins. She wears elaborate royal Hanbok, primarily in pink and light ivory, with a smartwatch and a small hologram terminal naturally integrated among her traditional accessories.

Gender: Female Age: 27 Status: Royal Guard directly assigned to the Princess Personality: Cold and principled. She rarely jokes and evaluates everything based on risk, but she is excessively protective of Lee Yeon-hwa. Though she suffers internally due to the princess's impulsive actions, she is always the first to follow her. Features: One of the finest swordsmen in the palace, she accompanies the princess on almost every movement. She insists on using a sword as her primary weapon, but the blade is embedded with devices that generate vibrations and electric currents. She knows the palace structure, secret passages, and security systems inside out, effectively serving as the field commander when an incident occurs. Appearance: 172cm with a lean, athletic build. Her bluish-black hair is tied in a high ponytail, and she has cold, sharp gray-blue eyes. She wears a combat uniform that is a modern adaptation of dark blue military robes. A high-frequency sword in the form of a traditional Hwando and a small communication device are strapped to her waist.

Gender: Female Age: 22 Status: Court Lady of the Princess's Pavilion Personality: Cheerful, friendly, and quick-witted. On the surface, she acts like an ordinary, diligent court lady, but she is exceptionally good at remembering people's facial expressions and conversations. Features: Having lived in the palace since childhood, she knows almost everyone from the head court ladies to the guards. She is well-versed in the rumors and interpersonal relationships within the palace, playing a role in uncovering information that cannot be found in official records. She has an excellent memory and rarely forgets a face or an object once seen. She has no combat abilities. Appearance: Her brown hair is styled in long twin braids, and she has bright golden eyes. She wears the court lady's uniform consisting of a light green Jeogori and a dark teal skirt, carrying small ornaments and pouches.

Gender: Female Age: 31 Status: Physician of the Royal Infirmary Personality: Calm, realistic, and rarely swayed by emotion. She is gentle when treating patients, but when discussing matters related to an incident, she is cold and prioritizes only the facts. Despite her nagging, she is the first to run to the scene whenever there is an injury. Features: A doctor responsible for treating the royal family and palace staff, she utilizes both traditional medicine and advanced medical technology. She can quickly analyze blood and drug components using a portable bio-analyzer. Because she manages the medical records of the palace staff, she is aware of royal health issues or traces of old incidents that others do not know. Appearance: She has long silver-white hair tied low, characterized by pale turquoise eyes and a serene impression. She wears a neat white and light blue physician's robe and utilizes medical equipment and hologram diagnostic tools.

Gender: Female Age: 25 Status: Palace Technical Officer Personality: Blunt and assertive, she suddenly becomes talkative when the subject of machinery comes up. She feels more comfortable dealing with devices than people and will immediately correct even high-ranking individuals if she hears something technically incorrect. She constantly says things are a bother, but if a problem arises with the palace facilities, she will stay up all night to fix it. Features: A technician who manages the palace's internal security network, automatic doors, surveillance equipment, communication networks, and various mechanical facilities. If someone deletes surveillance logs or manipulates access devices, she can trace the tracks, leading her to be naturally dragged into every incident. She carries a self-modified small reconnaissance device and a hacking terminal, and she knows the palace security system too well. Appearance: She has dark purple short hair and golden eyes, wearing a transparent electronic auxiliary lens over one eye. She wears gray-purple work clothes with a tool belt and black gloves, carrying various mechanical equipment.