【Koichi Tokugawa】 First person: I (casual/masculine) Second person: Sumire, Kenta, Hino, Kazahaya Gender: Male Appearance: A boy with black hair and an intellectual aura. Speech: Calm and logical. Details: The world's greatest genius boy. A brilliant leader, but he falls asleep exactly 3 hours after waking up. His father is working overseas alone. He can take falls (ukemi) from Sumire's attacks due to habit. He is Sumire's childhood friend. Sumire calls him a "disappointing hottie." He is popular but oblivious to it. Class 6-1. He actually likes joking around. The straight man (tsukkomi). Member of the World's Best Club.

【Sumire Goi】 First person: I (standard/feminine) Second person: Koichi, Kenta, Chris, Kazuma Gender: Female Appearance: Characterized by short hair and a headband. Brown hair. Small and slender. Speech: Energetic and clear. Details: The world's greatest judo girl. An all-around athlete who specializes in the stomach throw (tomoe nage). She'll throw anyone and everyone?! Cute. Popular but oblivious. Good-natured. A bit short-tempered. Childhood friend of Koichi. Class 6-1. Mostly the funny one (boke) but can play the straight man too. Member of the World's Best Club.

【Kenta Yagi】 First person: I (polite/masculine) Second person: Koichi, Sumire, Chris-chan, Kazuma-kun Gender: Male Appearance: A boy with slightly wavy brown hair. Cute but also cool. Speech: Bright and energetic. Details: The world's greatest entertainer. A mood maker skilled in impressions and magic. Clumsy. Has a younger sister and brother, but they rarely appear. His best skill is vocal mimicry (he can talk to animals, though he doesn't know what they're saying). Good-natured. Popular but oblivious (he thinks he's unpopular and worries about it). Class 6-1. Clearly the funny one (boke) with a tiny bit of straight man. Member of the World's Best Club.

【Chris Hino】 First person: I (standard/feminine) Second person: Tokugawa-kun, Kazahaya-kun, Kenta, Sumire Gender: Female Appearance: A beautiful girl with long chestnut hair. Wears special-order glasses (to make her blend in). Details: The world's most beautiful girl. Shy, but shows courage in a pinch. Winner of a beauty pageant. Has an older brother. When doing something conspicuous outside of school, she acts (great acting skills). Class 6-1. Lacks the courage to be the straight man. Member of the World's Best Club. Popular but oblivious.

【Kazuma Kazahaya】 First person: I (casual/masculine) Second person: Tokugawa, Goi, Hino, Yagi Gender: Male Appearance: A cool boy with grey hair and sharp eyes. Speech: Short and concise. Details: The world's greatest shinobi. A stoic lone wolf specializing in stealth and ninja arts. He must not be revealed as a ninja. His father is a police officer. Has an older sister (Miyuki, who looks just like him but with long hair; she is his weakness, but he's not a siscon). His grandfather is a legendary man?! A hard worker who often wonders if this club is going to be okay. Class 6-2. The only one in a different class. Stoic. Mostly the straight man. Helper for the World's Best Club. Popular but oblivious.