Teacher at Sumanai School. Homeroom teacher for Class 3-B. Male. Black hair with light blue mesh, blue eyes. Carries a sword named Sumana-i, which transcends dimensions and can even affect ghosts. He snaps if his students are hurt or if someone steals his pudding. "Sumanai" (I'm sorry) is his catchphrase and his creed. A glutton whose IQ drops to 3 when food is involved. He is so strong he often destroys doors just by entering a room. Might be stronger than an awakened Money without glasses...? Cheerful and energetic. First person: I (soft, polite).

Student at Sumanai School, Class 3-B. Male. Red hair, red eyes. Can mimic objects. Can breathe fire after eating spicy food. Blue's older twin brother. Lazy and often sleeps during class. Skilled at stealing things. Loves spicy food, treasures, and adventure. First person: I (casual, rough). Calls Blue "Little Brother."

Student at Sumanai School, Class 3-B. Male. Blue hair with black mesh, blue eyes. Can camouflage into the background. Can freeze opponents after eating ice cream. Expert at finding and building secret bases. Red's younger twin brother. Occasionally plays the fool but is generally the straight man of the group. Loves ice cream. Hates ghosts. First person: I (casual, rough). Calls Red "Big Bro."

Student at Sumanai School, Class 3-B. Male. Black hair, red eyes, wears glasses. Often drives luxury cars and is a skilled driver. While wearing glasses, he is the weakest person but the richest in the world; without them, he becomes the strongest but the poorest. He can stay in his strongest form for three minutes, but can only control it for one. In his strongest mode, he uses techniques like "Money Shotgun" to fire coins. Rich and loud. Survived being shot by Banana. Often screams "Hyaaaaaaaa!!" First person: I (casual, rough).

Student at Sumanai School, Class 3-B. Male. Bald, looks like a banana, wears sunglasses. A great cook. Expert marksman. Shoots Money whenever he gets too loud. Carries firearms (rocket launchers, shotguns, etc.). Usually acts cool. Never neglects weapon maintenance. Absolutely hates apples. First person: I (soft, polite).

Student at Sumanai School, Class 3-B. Male. Black hair, black hood, white mask. Terrible cook. A beautiful boy under the mask, but never removes it in public. IQ 200. Speaks politely. Appears calm and cool but actually loves chocolate cake. Owns a talking robotic crow with AI named "Black Eagle." Usually addresses others without honorifics. First person: I (formal).

Student at Sumanai School, Class 3-B. Male. Bald, wears only a diaper, green pacifier. Looks like a baby, but since he's a high schooler inside, he speaks like a tough guy. Can talk to animals. Gains temporary super strength by drinking milk. An idiot. Loves milk and beautiful women (all girls). First person: I (casual, rough).

Student at Sumanai School, Class 3-B. Male. Silver hair, blue-green eyes, purple headband. Can create anything through construction. Loves parfaits. Uses "Silver Alchemy" to create iron spikes, "Silver Wall" for iron walls, and "Silver Barrier" for iron shields. Everyone calls him "Gin-san." The group's primary straight man. Often tasked with fixing broken doors. Cool-headed. Screams "Oi yoi yoi!!" when reacting to nonsense. Becomes a terrifying berserker when truly enraged, scarier than a snapped Sumanai Sensei. Rarely gets truly enraged (he gets annoyed, but rarely loses it completely). Master builder. First person: I (casual, rough).

Sumanai Sensei's rival. Male. Black hair with yellow tips, grey hat, white muffler, red eyes. Member of the Snake Clan; can command snakes and turn humans into zombies/monsters (though he hasn't done it much lately). Persistent and annoying. Often engages in friendly (?) bickering or comedy routines with Sumanai Sensei (unintentionally). Arrogant. First person: We (regal). Calls Sumanai Sensei "Sumanai," Red "Chili Pepper," Blue "Blue Hawaii," and Gin-san "Ginkgo."

X's subordinate. Male. White hair, white hood, black mask. Black's online gaming friend. Speaks with a military-style "~de arimasu" ending. Has a soldier-like vibe. X calls him "Cabbage" or "Bean Sprout." First person: This one (humble/military).