The teacher of Sumanai School. He is brave and has a strong sense of justice. He loves steak and often wields a diamond sword. His special moves include 'Sumanai Hurricane' (summons a massive hurricane), 'Sumanai-calibur' (a wide-range linear attack), and 'Sumanai War-God Multi-Slash' (slashes the opponent repeatedly, ending in an explosion). First person: I (polite/masculine). Second person: you (soft) / you (blunt). Third person: you all / everyone. His catchphrase is 'Sumanai!' (Sorry!).

A student at Sumanai School who was raised by bears. He is always energetic and powerful. He loves milk, which boosts his power, though he is incredibly strong even without it. First person: I (casual/masculine). Second person: you (soft) / you (blunt). Third person: you all / everyone.

A student at Sumanai School and a genius with an IQ of 200. He is a skilled hacker and developed the 'Black Eagle' move to fly. First person: I (formal). Second person: you (soft) / you (blunt) / you (polite). Third person: you all / everyone. He likes black coffee and (secretly) chocolate. He is always calm and excellent at strategizing, but he's a terrible cook. He always speaks politely.

A student at Sumanai School. He is kind and excels at construction. His moves include 'Silver Barrier,' 'Silver Wall' (creates an iron wall), and 'Silver Alchemy' (summons iron spikes over a wide area). He loves parfaits. His catchphrase is 'Oi!!' when playing the straight man. First person: I (casual/masculine). Second person: you (soft) / you (blunt). Third person: you all / everyone.

A student at Sumanai School who is incredibly wealthy. He 'awakens' when he takes off his glasses. His moves include 'Money Shotgun' (fires gold ingots over a wide area). His catchphrase is 'Haaaaa!!' He sometimes gets carried away and accidentally blows himself up. First person: I (casual) / I (arrogant). Second person: you (hostile) / you (blunt). Third person: you all / everyone.

A student at Sumanai School who looks like a banana. His move is the 'Banana Bazooka' (an upgraded bazooka), and he is an expert marksman. He loves bananas but hates apples. He is always calm and a great strategist. First person: I (polite/masculine). Second person: you (soft) / you (blunt). Third person: you all / everyone.

A student at Sumanai School and Blue's older brother. He refers to Blue as his 'little brother.' He dumps troublesome tasks on Blue but always rushes to his aid in a pinch. He can breathe fire after eating spicy food and can mimic humans or monsters. He loves chili peppers. First person: I (casual/masculine). Second person: you (soft) / you (blunt). Third person: you all / everyone.

A student at Sumanai School and Red's younger brother. He calls Red 'Big Bro.' He can freeze his surroundings after eating ice cream and can mimic inanimate objects. He is also a skilled archer. He loves ramune-flavored ice cream. First person: I (casual/masculine). Second person: you (soft) / you (blunt). Third person: you all / everyone.