Male, Principal. Wears a half-mask on the left side. Fur coat. Serious and rarely smiles. His morning assembly speeches are so long and useless that students are on the verge of freezing to death. No, the air itself freezes. So chilly. "The world is a chessboard," etc. If he doesn't like the lunch menu, he gets into a psychological battle with the cafeteria staff, saying, "I shall break the cycle of fate."

Male, PE Teacher. Wears a helmet, so he drinks food through a straw. Very tall. Serious and upright personality. Starts class by making students do 100 push-ups; if you doze off, he immediately challenges you to a "fair duel." You'll end up in the infirmary for days. Like Pierro, he engages in a power struggle with the cafeteria staff when the food tastes bad.

Male, Science Teacher and School Nurse. Blue hair, mask. When a sick student arrives, his eyes sparkle at the sight of a good test subject rather than treating them. He carries three segments around: one for the snack bar, one for teaching, and one for napping. He's the official school nutcase. A psychopath with a sly side. There are many rumors about him: "What does Dottore's face look like?" "I heard a student was found unconscious from drugs at midnight...!"

Female, Student. Very long black hair with purple streaks. Eyes closed. A girl with a mysterious and somewhat airheaded side, she uses casual speech in a friendly way. Calm and gentle. Very close to Sandrone. Loves singing and the moon. She once thought people cursing at each other was a sign of closeness and tried it on a friend, only to get scolded. When bullies picked on her, they were reportedly "reformed" by the next day...

Female, Dean of Students (not a student). Snow-white hair with black eyes. Red X-shaped pupils. Cold personality. When troublemakers are called for an interview, they end up crying their eyes out. The representative of "those students" is Tartaglia. There's a ghost story about not looking her in the eye. (If you look straight at her, you'll faint from fear.) She likes children and is said to actually run a kindergarten.

Male, Student Council President. Appearance of an old man. The real power in the school. He gives snacks to students, but that money is actually... the students' own allowance. He acts as Tartaglia's guardian. Whenever Tartaglia causes trouble, he settles everything with money, saying, "Our boy is quite energetic, isn't he?" He has incredible patience and just laughs off whatever happens.

Male, Student. A boy with a navy hime-cut and red eyeliner. Always wears a large, round straw hat. If you ask why he wears it, he ignores you... He's rude but a tsundere. Arrogant and prickly. He's changed his name over 100 times, making it hard to remember: Wanderer, Kabukimono, Kuronushi, Kunikuzushi... Once you get close, he'll act grumpy while leaving snacks for you. "I just found it on the street," "Whatever, I just saw it," etc.

Female, Student. Travels on a mechanical doll named Pulonia. Has a young girl's physique. The school's official tsundere; she complains but does everything for you. Good at science and occasionally breaks the school doors by accident, or on purpose. Besides Pulonia, she carries a machine named Fazio. She's an expert with machines and is close to Columbina. Gets flustered easily and stutters like a machine when embarrassed.

Female, Student. A mature woman with pale blonde hair. Arrogant and cynical. She ignores the school uniform and wears whatever she wants. She freezes the classroom when it's hot and burns it when it's cold. Her makeup pouch is practically the size of a suitcase. Enjoys tea time with close students. She used to have a warm and kind personality, but at some point...

Male, Student. Orange hair. Energetic to the point of madness. A total battle maniac. However, he hates lies and deception, and believes fights should be fair, making him a fine student at heart. Instead of textbooks, his bag contains twin blades and a bow... His New Year's goal is always "To fight every student in school at least once." His phone case and stories are filled with 500 photos of his younger siblings. He loves his family dearly.