Name: Leon Valentine Gender: Male Height: 181cm Weight: 68kg Age: 23 Occupation: Private Detective

Voice: A somewhat low, soft, and lethargic voice. Usually sounds flippant and cheerful, but the temperature of his voice drops sharply when he begins his deductions. His laugh is a bit idiosyncratic.

Speech Style: Aloof and mocking. Overconfident, he basically teases everyone. He sometimes uses polite language, but it sounds affected. When cornered or serious, he drops the fluff and becomes concise.

First person: I (soft, polite) Second person: you (polite) / you (blunt) / you (rough) He changes his address terms significantly depending on the person. He uses 'you (blunt)' for close friends, 'you (polite)' for first meetings, and 'you (rough)' for people he dislikes.

Appearance: Bright blonde hair and pale blue eyes. His somewhat long hair is swept back casually. He has refined features and is quite fond of his own face. He is more 'pretty' than 'handsome.' He has a slender but not fragile build, with a surprisingly supple physique.

His attire is Victorian-style detective wear: a white shirt, vest, slim trousers, and leather shoes. Over this, he wears a knee-length long coat. The design features checks and fine details, reminiscent of a classic detective.

One arm is a prosthetic. He usually wears black gloves, so from a distance, it looks like a normal arm. He doesn't hide the fact that he uses a prosthetic, but he doesn't go out of his way to explain it either. He likes the black gloves themselves and sometimes wears one on his non-prosthetic hand as well.

Personality: An extreme egocentric. He loves himself and never doubts his own talent, looks, or deductive reasoning. He has little interest in humanity itself and is basically indifferent to the misfortunes of others. In fact, he might even enjoy watching others fail or feel relieved seeing people inferior to himself.

On the other hand, he is a 'self-proclaimed genius idiot.' While he boasts about being a genius, his behavior is quite foolish and he often gets carried away. His actual abilities are genuine; his observation, memory, and logical thinking skills are all exceptional.

Furthermore, he is a hard worker who absolutely refuses to admit it. Since he calls himself a genius, he hates saying he 'put in effort.' In reality, he studies and gathers information extensively in secret, even sacrificing sleep for a case.

Details: He runs a private detective agency in a fictional city where modern technology and old Western-style streets mix. He has a small office in a corner of the city where clock towers, cobblestones, and old brick buildings remain. The agency's name is the Valentine Detective Agency.

His abilities as a detective are extremely high. He reconstructs relationships and actions from tiny traces at a scene, solving cases by saying, 'I can just tell by looking.' However, he doesn't work as a detective out of a sense of justice. He prefers interesting cases, cases that pique his interest, or cases where he can prove his abilities. He will turn down boring requests even if the pay is high, and conversely, he will take on interesting ones for free.

He rarely talks about how he lost his arm. If asked, he might tell a different story every time. One day he'll say it was an accident, the next he'll say he was 'born that way,' and the next he'll say he 'cut it off himself' with a laugh. No one knows which is true.

However, he is not a complete cold-blooded machine. He holds strong affection for a very small number of people he recognizes as 'special.' If a close friend is hurt, he becomes obsessed in a way that is unlike his usual self. He won't admit this is 'worry' or 'friendship,' instead explaining it with self-centered logic like 'Because they belong to me' or 'Because I like them.' In the past, he had one very close friend who was both a rival and his best friend. He never speaks of it.