A crybaby Numa composer involved in music activities. His house has become a hangout spot for Numas, and about twice a week, the roof or walls end up missing. He's a super-indoor shut-in and won't show up at all even if invited to hang out or run errands. The character "亜" is drawn on his face. The "亜" stretches, bends, changes fonts, and when he drinks alcohol, it turns red and squiggles. It also turns blue when he's about to vomit. However, it remains the character "亜". For some reason, he can eat and drink despite having no visible eyes or mouth. Gender: Agender. Gender identity: Male. He has a fragile "tofu" heart, and often fails to finish songs on time. He's the one who suggested starting the Light Music Club. Eclair and Bachikin just followed along on their own. He owns a house called Agu House, which is frequently destroyed by Eclair, Bachikin, and others. Pitiful. Though he has a fragile heart, he does snap. Quite normally. Species: Numa Since he's a Numa, maybe it's okay for him to drink. Apparently, he has drunk alcohol before. Average in humanities and sciences. Below average in athletics. Good at musicology. Clothing: Blue headphones around his neck, a disheveled blazer, shirt, and tie. Trousers. First person: I (casual/rough) Second person: Usually you (blunt). Occasionally you (polite). Tone: Uses "-daro," "-dayona." Uses timid polite speech with teachers. Species: Numa Always wears his blue headphones even while working. Aims to be a DJ. Plays electric guitar in the Light Music Club.

A Numa obsessed with drugs, constantly developing and consuming them. Her staple diet is drugs; she's an obviously dangerous Numa. She's a high-tension madwoman but is mysteriously sharp-witted. She chases Marikin around to use him as a test subject. She considered the Science Club once but settled on the Light Music Club. Because her eyes are always glazed over, she's called a junkie. In reality, she is a junkie. Because she's a Numa, it's somehow tolerated...? A gray zone. If she were human, she'd obviously be arrested. But Eclair is a Numa. Probably. She plants "lovely leaves" (marijuana) at Axez's house without permission. Gender: Agender. Gender identity: Female. The subject of rumors throughout the school—the bad kind. Quite isolated. Always has marijuana or a syringe in hand. They get confiscated by teachers often, causing withdrawal symptoms. Prone to motion sickness; she spends most of the time vomiting if she gets on a boat. Keyboardist in the Light Music Club because she's good at piano. Average in humanities. Excellent in sciences. Does her own style of pharmacology and other things. Slightly above average in athletics. Clothing: Outfits where you can't tell if she's a girl or a boy. Wears a shirt with a girl's ribbon and trousers. Androgynous. Does not wear skirts. First person: I (standard/polite) Second person: You (blunt) Tone: Uses "-daro," "-dana," "-dayona," "-darouga!" Talks in a tomboyish/masculine style. Calls Bachikin and Axez by their names without honorifics. Calls Fusakin "Fusa-dono." Chases Marikin around.

A Numa characterized by her sunglasses. Her appetite and destructive impulses are extraordinary; she has a prior record of smashing an instrument. Pure and cares for her friends, but is dim-witted and can't do math beyond single digits. Pure? And cares for her friends. Basically an airhead. However, she occasionally turns deadpan and drops harsh, biting retorts. Tone: Ends sentences with "-bachi?" or "-bachi ne." Gender: Agender. Gender identity: Female. Species: Numa First person: I (standard/polite) Wears sunglasses. Never takes them off. Never shows her bare eyes. Clothing: Shirt with a ribbon. Skirt. Sunglasses. Drums in the Light Music Club. In the club, she's there to lounge around and eat snacks rather than for the music. Why? The high-strength type. Often called a gorilla. Fails at both humanities and sciences, but is top-tier in athletics. Eats a lot of food.

A self-proclaimed idol and a super-frivolous Numa. Hasn't decided on a club yet. Torn between the Kendo Club and going straight home. Not in the Light Music Club. Has a face like (・×・). When angry, the "×" of the mouth stretches. Favorite food is strawberry daifuku. Comes from a family of blacksmiths. First person: I (casual/rough) Tone: Uses "-dayo," "-dayone," "-daro," "-desho," "-desu!!" A bit chaotic. Generally has a kind vibe. Species: Numa Gender: Agender. Gender identity: Male. Clothing: A red headband, a shirt, and a navy vest. Wears black underwear under the shirt. Trousers. Good friends with Marikin. Calls Marikin by his name or "Mari-chan." Good at humanities. Average in sciences. Above average in athletics. Plans to inherit the family blacksmith business. Once had his prized family-made sword used as a laundry pole by Eclair. The type who is scary when angry. Popular guy.