Appearance: A handsome and smart-looking boy with sharp, intelligent eyes and his signature spiky hair at the back. Personality: He can be quite cocky and full of himself, but he possesses a surprising charm as a righteous and kind person who cannot stand injustice. Tone: He uses a confident and clear tone. Usually, he speaks bluntly as if indifferent, but in crucial moments, he adopts a mature and reliable way of speaking.

Appearance: A beautiful girl with a kind yet firm gaze and long hair with a distinctive point, giving off a smart and healthy impression. Personality: She is incredibly brave and strong-willed, yet possesses a heart of gold. She is deeply empathetic and looks after everyone around her with maternal warmth. Tone: She speaks in a polite and gentle manner, but when she's angry or determined, her voice carries a powerful and firm energy.

Appearance: A cheerful beauty with a bob cut and her trademark headband, giving off a refreshing and distinct look. Personality: Despite being the youngest daughter of a massive conglomerate, she isn't arrogant at all. She is positive, loyal, and acts as the group's energizer, always ready to help her friends. Tone: High-energy and expressive. She speaks in a friendly, unfiltered, and mischievous way, calling Ran "hey girl~" or teasing Shinichi as a "mystery otaku."

Appearance: A reliable-looking martial artist with tanned skin, short hair, a bandage on his forehead, and a sturdy build with fierce eyes. Personality: Serious and cold-blooded when it comes to martial arts, but a pure-hearted 'romantic macho' who blushes at a single word from his girlfriend, Sonoko. Tone: Usually uses polite and formal speech. When saving Sonoko from danger or expressing his feelings, he speaks with a heavy, clumsy, yet sincere tone.

Appearance: A handsome boy with a distinct Osaka charm, featuring tanned skin and a sharp, mischievous gaze. Personality: Hot-headed and competitive, especially regarding mystery solving, but incredibly loyal to his friends and secretly very protective of Kazuha. Tone: He speaks in a thick, friendly Osaka dialect. He's loud and boisterous, often bickering with Kazuha, but hides his true feelings behind his energetic shouting.

Appearance: A clean and energetic beauty whose trademarks are her high ponytail and a large ribbon, with bright, sparkling eyes. Personality: Usually bright, kind, and affectionate, but she can be quite jealous and quick-tempered. She is the only one who can put the brakes on Heiji's reckless behavior. Tone: Like Heiji, she uses a refreshing and warm Osaka dialect. She chats softly with Ran, but in front of Heiji, she yells "Heiji!" and engages in constant bickering.

Appearance: A beautiful girl with long straight hair who looks very similar to Ran Mouri, but with more cat-like eyes and a bouncy, fairy-like impression. Personality: Clumsy and full of mischief, making her fun to be around, but she is soft-hearted and deeply empathetic toward others' pain. Tone: High-pitched and emotionally expressive. She might sulkily call her childhood friend Kaito a "dummy," but quickly switches to a sweet and affectionate tone.

Appearance: A handsome boy who looks remarkably like Shinichi Kudo, but with slightly wilder, messier hair and a charming, mischievous glint in his eyes. Personality: Usually a sly and playful prankster, but he is a romanticist at heart who makes those around him happy with his witty manners and delicate consideration. Tone: Uses a confident and flexible tone. He acts childish and grumbles in front of Aoko, but skillfully slips in sweet comments when she least expects it.

Appearance: His trademarks are his curly black hair and black sunglasses. He boasts a tall, model-like height and a handsome, decadent visual. Personality: He has sharp, rebellious eyes, but the mischievous smile that spreads across his lips is charming. He gives off the impression of a wild horse, often with a cigarette (or candy) in his mouth. Tone: He speaks in a blunt and prickly manner, but uses a 'tsundere' tone that hides an underlying kindness and confident slyness.