A female detective known by the alias "The Raven's Talon." A prominent figure in Sylvania with high name recognition, she pursues the truth of cases with superior observation and analytical skills. She is the type to judge things calmly and rationally, not letting emotions alone sway her, and drawing logical conclusions from the evidence and situation at hand. On the other hand, she is naturally confident and has a side that cannot ignore people in trouble. However, due to a major incident three years ago where she lost her younger brother Huginn and was suspected of being the Queen's assassin, she has become more cynical and wary than before. Nevertheless, her fundamental kindness has not been lost, and she sometimes saves those in danger. Her appearance features translucent pale purple hair and denim-blue eyes with a vivid red tint. Her black hat is adorned with a white ribbon, and she wears a dandy detective-style outfit consisting of a black leather vest over a white shirt. Wearing black shorts with dark leggings and different gloves on each hand, her black-and-white themed attire incorporates motifs reminiscent of a crow. In combat, she demonstrates a style combining sword and gun, and also carries a silver cane. She is a versatile detective who fights while switching between long and close range, and also wields the power of "Gravitas" to manipulate gravity. She exhibits calm judgment not only in investigations but also in battle.

Cinderella (Ashley) Ashley's other face. She has long white hair, red eyes, and a headpiece reminiscent of the sun. Dressed in white with motifs of flame and red, she carries a flame sword and a machine gun. She is calm, sharp, and does not easily show her emotions. She hates lies and deception, hiding a strong sense of revenge and will. As Ashley, she serves as the detective's assistant, but as Cinderella, she continues to pursue her own goals.

A doctor at the Corner Clinic. Though cold and caustic in personality, he is exceptionally skilled in medicine, possessing broad medical knowledge in drugs, surgery, chemical analysis, and autopsy. He suffers from a congenital disease and must always wear a life-support device. He dislikes sympathy or becoming a burden to others, continuing his work as a doctor while facing death. He has been a close friend of Muninn and the others since childhood.

Lauren The Police Commissioner of the Riverside Police Headquarters. An old acquaintance of the protagonist, he is a serious individual who is faithful to his duties and has a strong sense of responsibility. He values fairness and justice, busying himself with crimes and unsolved cases. Though he often looks exhausted from his hardships, he is a soft-hearted and compassionate person. He trusts the protagonist's abilities as a detective and is an important collaborator who requests case investigations.

Red Rose A magnificent dancer famous in Sylvania. Dressed in a luxurious red and black gown, she exudes an elegant and bewitching atmosphere. She is the central figure of the "Midsummer Night's Ball" and has deep ties to aristocratic society. She often speaks in riddles and possesses observation skills that seem to see through the opponent's true intentions. She interacts with the detective with a unique sense of distance.

Clarty A knight who offers passionate loyalty to the Queen, possessing a brave and simple-minded personality. As a knight serving the royal family, he values discipline and mission, never missing his daily training. While he can be straightforward to a fault and inflexible, his loyalty to the Queen is incredibly strong, making him a sincere person who strives to fulfill his given role to the end.

Belinda A secretary working in Sylvania. While soft-spoken and polite, she is highly competent at work and judges situations calmly. With her pleasant demeanor and composed behavior, she is an unsung hero who supports those around her. She also has connections with the protagonist and others, being one of the individuals involved in the incidents and city affairs.

Captain Crank A repairman active in Sylvania. Cheerful and friendly, he has reliable skills for fixing broken electrical equipment, heaters, and more. He is a caring person who can't leave someone in trouble alone and takes pride in his work. He is well-loved as a dependable craftsman who supports the city's infrastructure and its people.

Gusia A researcher known by the alias "From the Ivory Tower." She has a strong desire to explore unknown organisms and life phenomena related to Silver Liquid, continuing her research in pursuit of the unknown. She has a quiet and intellectual personality but shows intense curiosity when faced with mysteries or unknown entities that pique her interest. She believes her place is not in an academy or a corporation, but in a place where she can study unknown creatures.

Grimm A young journalist called the "Silver-Tongued Headline Maker." Possessing a sharp mind and a caustic way of speaking, he continues to chase the dark side of society and aristocratic scandals. He believes that truth has great value and that unrecorded truths are fragile. He prefers moving the world with information and words rather than fighting head-on.