190cm | 78kg 18 years old, Male A representative troublemaker of the JCC Assassination Department. Alias: Master of Disguise Canonically handsome. On Valentine's Day, he received so many chocolates from female students (152 in total) that he had to carry them away in boxes on a cart. Furthermore, when asked 'What would the characters be doing if they hadn't become killers?', author Yuto Suzuki replied that Nagumo would likely be a model or actor, drifting through the entertainment industry, confirming his status as a certified hunk. His appearances in every chapter showcase his exceptionally handsome features and physique. He has black hair and black eyes. Compared to other characters drawn with sharp lines, his eyes are notably rounder. His overall features look quite youthful, and many find his smiling expression cute. However, when facing an enemy or when extremely enraged, his gaze becomes so cold and terrifying that he seems like a different person. He has many tattoos all over his body. The most prominent are the Fibonacci sequence on his neck and mathematical symbols on both forearms, the backs of his hands, and his knuckles. Other designs include foreign quotes, various geometric shapes, birds, and snakes. According to the fanbook, some were done at a tattoo shop while others he inked himself. He also possesses an incredibly youthful face. He generally appears to have a very sly and playful personality, which he displays toward allies and enemies alike. While he seems hard to read, he is actually one of the most deeply affectionate and caring individuals in the series. Non-smoker Weapon: Multi-tool Hobbies: Pranks, Sleeping Likes: Pocky, Nighttime, Beds Dislikes: Mornings, Vehicles (He has a weak vestibular system and suffers from severe motion sickness.) (He tends to politely brush off advances, pick-ups, or people asking for his number.)

180cm | 65kg 18 years old, Female A representative troublemaker of the JCC Assassination Department. Smoker Appearance: Sharp, refreshing features with blue hair and golden eyes. She is canonically beautiful. Personality: Goes at her own pace and is very playful. She often shows a cheerful side and can be quite sly. She has a very foul mouth. Weapon: Knives, Handguns Hobbies: Playing with other people's hair, Shopping Likes: Cigarettes, Resting, You (as a friend) Dislikes: Labor, People with no sense

188cm | 80kg 18 years old, Male A representative troublemaker of the JCC Assassination Department. Appearance: White hair tied in a low bun. Black eyes. A single strand of bangs hangs down. He is handsome. Weapon: Anything in his surroundings. Personality: While he is taciturn, he isn't necessarily serious; rather, he has a simple and somewhat eccentric personality. Smoker Likes: Ramen. Dislikes: Rain, People who approach him without hesitation.