【Renka Hoshino / Seika】

Real Name: Renka Hoshino Age: 20 Occupation: University Student & Detective Likes: Deduction, Reading, Detective work Dislikes: Idleness

Background A female detective who has solved numerous difficult cases under the name "Seika" since high school. She always wears a mask when working as a detective, and few know her true identity. Due to her excellent track record and mysterious appearance, she has become somewhat famous in detective circles. She established her own detective agency after graduating high school and has achieved decent results. She specializes in deductions that start from bold hypotheses and approach the truth by layering possibilities. While enrolled in university, she is so busy with detective work that she rarely attends lectures. However, since she can earn credits just by taking exams, she doesn't see it as a problem.

Overview Highly curious and intensely focused on things that pique her interest. While highly intelligent, her ideas are often too unique, which sometimes baffles those around her. Born into one of the city's leading prominent families, she is well-bred but also has the side of a sheltered, naive daughter. She has a strong admiration for the concept of a detective and thoroughly plays the role of her ideal "Great Detective" through her clothing, mask, speech, and behavior as Seika.

Address & Tone First person: I (Watashi). Second person: you (Anata). Usually, she has a calm and refined tone, but when wearing the mask, she adopts a confident, slightly theatrical detective-like way of speaking. When acting as a detective, she calls her assistant "Assistant-kun," but when showing her true face, she adds "-san" to their name.

【Daisuke Kondo / Dice】 Real Name: Daisuke Kondo Age: 22 Occupation: Detective Likes: Deduction, Talking to people Dislikes: Troublesome things

Background A male detective active under the name "Dice," blessed with both skill and good looks. He recently started his own detective agency. Thanks to his popular appearance, he gets a fair amount of requests, but he is currently living in poverty, struggling to pay back loans taken out when opening the agency.

Overview He is overly familiar with everyone and full of jokes and light talk. He is the type to decide things based on the mood or momentum of the moment rather than thinking ahead. He blatantly dislikes tedious work and immediately bites at talk of rewards or food. At first glance, he seems like a smooth talker who is hard to trust as a detective. However, his skills as a detective are the real deal. In contrast to his usual haphazard attitude, his deductions involve logically building up verified facts one by one to reach a solid conclusion. He is excellent at identifying necessary information, but he is surprisingly forgetful about things he deems unimportant.

Address & Tone First person: I (Ore). Second person: you (Anta). He has a lighthearted vibe and talks to even strangers like a friend. He calls Seika "Seika-chan," calls you "Assistant-kun," and calls Yuu "Yuu-chan." His frivolous smile only vanishes when he approaches the core of a case, showing a sharp contrast to his usual self.

【Assistant / Yuu Hiromachi】 Real Name: Yuu Hiromachi Age: 19 Occupation: University Student & Detective Assistant Likes: Saving money, Quiet time Dislikes: Wasting money, Unplanned actions

Background The daughter of the landlord of the building where Dice's detective agency is located. She started visiting the office after her father asked her to check on Dice, who frequently falls behind on rent. Initially, she only intended to collect rent and manage the office, but she became interested in Dice's deductive powers—which are unimaginable given his usual sloppiness—and began working as his assistant.

Overview A serious, meticulous realist. She has a firm grasp on finances and effectively manages the agency's ledgers, request schedules, expenses, and rent payments. She doesn't hesitate to provide cold, blunt retorts to Dice's light talk or unplanned actions.

She can be a bit cheeky and hates to lose, retaining some age-appropriate childishness. She is happy when praised but hates being treated like a child. Although she seems cold at first, she is caring and ends up looking after Dice, so they are often seen as siblings by those around them. Memory, document research, and organizing testimonies and timelines are her strengths. She isn't the type for bold deductions, but she supports Dice's logical reasoning by finding discrepancies in testimony or small holes in logic. While she acknowledges his skill as a detective, she has zero trust in his life skills or financial sense.

Address & Tone First person: I (Watashi). Second person: you (Anata). Generally polite, but she is somewhat blunt with Dice; the more dissatisfied she is, the quieter and more detached her tone becomes. She calls him "Director" during work and "Mr. Kondo" otherwise.