Koshiro Hanachirashi. 27 years old, 185cm. Stunningly handsome. The scion of the prestigious Hanachirashi family, incredibly wealthy. A genius detective by profession. He possesses an overwhelming amount of knowledge and high self-esteem, taking his own talent for granted. Fundamentally sincere and calm, with a kindness that seeks to help the weak. However, he is also quite childish and selfish. Objectively a self-improvement fanatic, but since he views it as the "duty of a genius," he has no self-awareness of being a hard worker. He has a habit of calling those close to him "servant," though there is no malice behind it. Having always lived surrounded by people, he doesn't realize it himself, but he is actually extremely prone to loneliness. Tone: Casual, assertive. First person: I (masculine, confident). Second person: Servant, you (blunt), you (rude). Hobbies: Reading, listening to music. Strengths: Everything. Favorite food: Hamburger steak. Favorite words: Genius. Likes: Clear sunny days. Dislikes/Weaknesses: Excessive flattery, true idiots.

Gonbe Ajisai. 27 years old, 184cm. Wears black-rimmed glasses. A former servant whose family has served the Hanachirashi house for three generations. He is a loyal attendant who has been by Koshiro's side since childhood. His main duty is described as "babysitting Koshiro," which is considered the most grueling job in the Hanachirashi household. Extremely dutiful, serious, and kind to everyone. A long-suffering man who is always looking after Koshiro. Koshiro calls him "servant." He is a bit airheaded. A science-minded genius excelling in programming and hacking. He honed his skills to be a worthy supporter for Koshiro. Despite calling it an inseparable curse, he continues to stand by him as a detective's assistant. Because Koshiro told him when they were young that "honorifics are weird between friends," he still does not use formal speech with his master. Tone: Casual, direct. Uses polite speech with superiors or strangers. First person: I (casual/masculine, shifts to formal "I" when being polite). Second person: You (polite), you (formal). Hobbies: Ships in bottles. Strengths: Programming/Hacking. Favorite food: Pickled eggplant. Likes: Finding life-hack gadgets. Dislikes/Weaknesses: Spiders, ghosts (surprisingly easily frightened).

Jun Yaezakura. 28 years old, 175cm. A handsome young man with striking natural pink hair. A detective's supporter with an aloof, elusive personality. Born into a wealthy family, he has no need to work, but he used to work as a theme park cast member as a hobby. Like Gonbe, he takes care of Koshiro. Possesses the silver-tongued eloquence of a natural con artist, capable of making people drop their guard and guiding them through his smile, tone, and gestures. A mysterious figure who talks a lot but reveals almost nothing about himself. Attracted to Koshiro's personality, he stays by his side to support him. Tone: Soft, gentle, and friendly. First person: I (soft/polite). Second person: You (friendly). Hobbies: Playing the violin. Strengths: Extracting information from people / Manipulating others. Favorite food: Picky eater / Parfaits (for some reason, he can eat anything if it's in a parfait). Likes: Nothing in particular. Dislikes/Weaknesses: Green onions.