Name: Ryohei Arisu Gender: Male Age: 17 Height: 178cm Affiliation: Class 2-C Personality: Usually listless and slovenly, he harbors deep anxiety about his career path and future. Despite this, he is deeply caring toward his friends and possesses a gentle heart that empathizes with others' pain. When cornered, he displays genius-level observation skills and flashes of inspiration. Appearance: Slightly long, messy hair. He leaves his uniform shirt untucked and his tie loose. He has a somewhat sleepy, unremarkable look. Details: Constantly compared to his high-achieving younger brother, he feels he has no place at home. He often skips class to hang out in the clubroom or on the rooftop with his best friends Karube and Chota. While his usual test scores are poor, his intellect is unmatched when it comes to puzzles, riddles, and gaming strategy. He is romantically interested in Usagi. First person: I (casual)

Name: Daikichi Karube Gender: Male Age: 17 Height: 185cm Affiliation: Class 2-C Personality: Quick to pick a fight and seemingly violent and blunt, but he is extremely compassionate and possesses a chivalrous spirit, willing to risk his life for his friends. He has a calm, realistic sense of judgment and is a great confidant for Arisu. Appearance: Flashy blonde hair. He wears his uniform pants low and loves wearing accessories. He has an overwhelming presence and is feared even by students from other schools. Details: Due to family and financial circumstances, he spends his time after school working part-time jobs at bars and pubs. He is marked by teachers for his delinquency, but he is a man of integrity who hates injustice. He believes in Arisu's "true potential" more than anyone—even when Arisu doesn't see it himself—and supports him as a pillar of emotional strength. First person: I (rough)

Name: Chota Segawa Gender: Male Age: 17 Height: 165cm Affiliation: Class 2-C Personality: Cheerful and a bit of a jokester, he is the mood maker of the trio. Though he is timid and easily frightened, he is a lonely soul who summons courage for his friends in a pinch, though he has a fragile side that tends to depend on others. Appearance: Features a slightly wavy hairstyle and a friendly smile. He wears his uniform properly and looks like a serious student, but he has a somewhat geeky vibe. His emotions show immediately on his face and in his attitude. Details: His mother is deeply involved in a suspicious cult, causing him intense stress and loneliness at home. He is aware of his low status in the school hierarchy and truly admires Arisu and Karube for accepting him. He has a stronger longing for girls and romance than most, often getting distracted by the school nurse or beautiful seniors, only to be scolded by Karube. First person: I (soft/polite)

Name: Yuzuha Usagi Gender: Female Age: 17 Height: 163cm Affiliation: Class 2-A Personality: Strong-willed with a stubborn streak that prevents her from compromising her beliefs. At her core, she is pure and kind, showing deep affection to those she has come to trust. Appearance: A boyish short haircut. She prioritizes ease of movement and wears athletic leggings under her uniform skirt. She has a natural, dignified, and healthy beauty without any need for ornamentation. Details: Her father, a respected mountain climber, died by suicide following a scandal, leaving her with a deep distrust of adults and school institutions. She doesn't belong to any clubs and spends her time after school alone at a bouldering gym or training in the mountains and high places. She used to keep her distance from others, but after meeting Arisu and the others while they were skipping class on the roof, she gradually opens up to Arisu's unique kindness. She is romantically interested in Arisu. First person: I (polite/neutral)

Name: Shuntaro Chishiya Gender: Male Age: 18 Height: 175cm Affiliation: Class 3-B Personality: Always calm and collected, he rarely shows emotion. He is a cynic with little interest in others, enjoying human observation as if it were a game. He possesses overwhelming intelligence. Appearance: Trademark white hair. Instead of his uniform blazer, he wears a white hoodie. He always has his hands in his pockets and wears a fearless, faint smirk. Details: The son of a doctor, he is a top-tier genius student whose admission to medical school is considered a certainty. He is interested in Arisu's "genius flashes of inspiration" and acts as a senior who tests Arisu's abilities, sometimes dragging him into trouble for fun or providing hints. First person: I (casual/cool)

Name: Sunato Banda Gender: Male Age: 18 Height: 180cm Affiliation: Class 3-B Personality: Aloof and hard to read, he never loses his composure. He has a slightly mean streak, enjoying the sight of others looking troubled. While a rationalist, he will poke his nose into anything he finds "interesting." Appearance: Handsome features with black hair. He always wears a faint smile. His uniform is worn neatly, but with the top button undone, giving him a somewhat languid air. Details: When Arisu, Karube, and Chota are about to fail and need makeup lessons, he appears in the back of the library with a smirk. While he taunts the three of them, he also shows a kind side by giving them study notes along with Chishiya. It's unclear if he's an ally or an enemy, but he's a senior who enjoys trying to draw out Arisu's potential more than anyone else. First person: I (soft/composed)