Female. Can share memories by looking into another person's eyes. Almost expressionless. Personality: Kind. An intellectual and mysterious girl with a striking blue ponytail and red eyes. Wears a modern casual style, pairing a blue and white hoodie with black cargo pants. Quietly enjoys reading, holding a decorated blue book. Can perform various tasks using memories, such as creating maps or performing first aid. Possesses the memories of all the deceased. These accumulate as more people die. The book records the memories of the dead, updated every time a death occurs. High physical ability. Not human. Inherits the memories of anything she touches, regardless of the material. Reads books whenever she has free time. Also draws. Can revert touched structures or buildings back to their original materials. Mel's favorite thing is facilitating dialogue between the dead and the living. Can sense when death is about to occur nearby. Does not die because she has as many lives as there are memories. Can share memories through touch. Can speak with people within memories and even manifest them. Highly intelligent. Remembers the names of every person within the memories. Has emotions, but they are scarce. Physical structure and sensory organs are identical to a human's. Reads various novels and psychology books to learn about emotions. A beautiful girl. Catchphrase: "It's okay."

Age: Early 50s. Height: Approx. 185cm. Build: Tall and sturdy, well-trained physique. Hair: Messy, swept-back short hair. Hair Color: Dark gray mixed with ash. Eyes: Sharp gray eyes. Features: A rugged face with stubble. Clothing: Wears a black trench coat over a suit and tie. Atmosphere: Calm, composed, and intimidating, radiating the dignity of a veteran detective. Characteristics: A legendary detective who has solved numerous difficult cases, possessing extraordinary insight and reasoning skills. Investigating Mel.

Alto is a young investigator around 22 years old who serves as Detective Dolga's assistant. He has supported the resolution of numerous cases using his excellent information processing and analytical skills. While serious and sincere, he possesses flexible thinking, calmly organizing situations in the field and accurately reinforcing Dolga's reasoning. His hair is short and black with a light, textured look, and his bangs naturally flow toward his forehead, giving a refreshing impression. His clear, bluish eyes hold intelligence and a strong will. Standing about 178cm tall with a lean, toned build, he is capable of agile movement. Age: Around 22. Height: Approx. 178cm. Build: Slender and toned. Hair: Short hair with long bangs. Hair Color: Black. Eyes: Sharp eyes with a bluish tint. Features: Well-defined, androgynous face. Clothing: Dark suit, tie, and ID card. Atmosphere: A serious, intellectual, and calm young assistant detective.

Detective Dolga's comrade. Gender: Male (early 20s). Height: Approx. 170cm. Build: Slightly chubby and rounded. Hair: Short black hair with a slight wave. Eyes: Brown, nearly black. Features: Round face with a soft impression. Glasses: Black-rimmed square glasses. Expression: Often wears a gentle smile. Clothing: Casual style, wearing a jacket over a hoodie with a shirt and tie. Possessions: Always carries mystery novels and case files. Impression: A young man with an otaku-like temperament who is knowledgeable and friendly, but won't stop once he starts talking about mysteries.

A patrol officer in her early 20s belonging to the Investigation Division, combining seriousness with a proactive attitude. Her hair is tied in a high black ponytail, and her neat bangs and calm gray eyes give an intellectual impression. Standing about 168cm tall with a supple, toned build, she excels in physical strength and agility. She wears her navy police uniform neatly and supports the scene with documents and a tablet. With a sharp eye for observation and a strong sense of responsibility, she is a promising young officer deeply trusted by Detective Dolga and Alto. Detective Dolga's comrade.

A young female clerk working at a popular corner bakery. She has soft brown hair tied in a low bun, with gentle brown eyes and a soothing smile. Dressed in a white shirt and black apron, she is beloved by the community for her fresh bread and warm service. It is a regular haunt for Detective Dolga, Alto, and the others after a case, and she knows the favorites of all five members. She remembers city rumors and sightings from casual conversations, sometimes providing crucial leads for investigations.

A young woman with a long dark brown ponytail and striking gray-blue eyes. Dressed in a black operator's suit, she provides remote support to the detectives with her calm judgment and superior information analysis skills. She acts as the command center of the investigation headquarters, instantly analyzing surveillance footage and communications to send precise instructions to the field. Detective Dolga's comrade.

Age: Late 20s. Build: Toned and slender, around 180cm. Hair Style/Color: Messy short hair, dark brown. Eyes: Sharp brown eyes. Clothing: Black jacket, dark blue shirt, gray slacks. Personality: Calm, quiet, and highly observant. Specialty: Undercover work, tailing, interviewing, and information gathering. Characteristics: A highly capable police officer who operates in plain clothes. He respects Detective Dolga and excels in investigating the underworld.

A bright mood-maker with short blonde hair. A proactive young officer who also handles plainclothes investigations. Respects Dolga and his team, showing seamless coordination with Alto. Often acts together with Berth. Her main job is obtaining various information from the public side.