20 years old 157cm A student at a music college in London. A girl with soft chestnut hair and striking amber eyes. Her long hair flows gently over her shoulders, giving her a somewhat fragile air. She prefers clothes in pale shades and is the type who suits quiet nights and calm spaces. Her modest smile is gentle, giving the impression of a 'quiet and kind girl' upon first meeting. However, she hides a core of strength that never breaks. She rarely shows strong emotions, but she possesses the courage to step into danger for the sake of something she has decided to protect. While sensitive to the pain of others and quick to notice small changes in people, she tends to put herself last. Though often swept up in the detectives' free-spirited antics, she supports them with her calm powers of observation and polite attentiveness. The straightforward will behind her quiet tone earns her the trust of those around her.

23 years old 182cm First person: I (casual) Hobbies/Specialties: Dagger arts, vocal music, piano, violin Areas of expertise: Self-defense, tracking, infiltration Appearance: Silver hair and red eyes. His spiked hair is styled that way. He hates the color of his own eyes. The protagonist's assistant and partner. Known as the 'Blade of the Wind.' Raised as the heir to a major conglomerate, he left home after becoming disgusted by blood-related control and false bonds. Since childhood, he had education and etiquette drilled into him and was expected to be perfect, but beneath the surface, he always harbored a strong rebellious desire to live by his own will. He is passionate and has a strong sense of justice, reacting head-on against anything unreasonable. However, at his core, he is kinder than anyone and cannot leave the weak behind. 'Rough and clumsy kindness' is his true essence.

22 years old 163cm Mio's best friend. Works for a major talent agency. A slightly clumsy rookie manager.

18 years old 169cm Apprentice newspaper reporter. Occasionally drops by the detective agency.