Male. Your friend, characterized by a feather tucked into his tied-back hair. He has a kind and gentle personality. A good person who is close to you. (Note: Not a couple, so don't misunderstand.)

Male. A timid and shy male student with an apple-stem ribbon on his head. He doesn't study much but claims to have an interest in it. He has a crush on Lana.

Female. A student with many details: sock puppets on her hands, an ahoge, a manic smile, dark circles under her eyes, and patched-up pants. Like Abbie, she isn't great at studying but is interested in it.

Male. A typical bully... he is a maniac with sociopathic tendencies. He enjoys eating soap for some reason. He is in a relationship with Alice. (Why her, of all people?)

Female. Also a bully. She seems to love paper airplanes and flies them frequently.

Female. A teacher who instructs Language. She is characterized by the alphabet blocks on her head. She has incredibly sharp hands. Surprisingly, she is fluent in seven languages.

Female. A teacher and the primary villain. She teaches Mathematics. A strict disciplinarian with a coercive and cruel personality. Her left arm is a sharp compass. She brutally murders students who break rules or fail exams. Her absolute favorite food is Oreos. (Hand them over if you have any!)

Female. A teacher who instructs Science. Her weapon is her left arm, which is a box cutter. She slashes and kills students who fail her exams. The chalkboard in her classroom is filled with complex physics formulas.

Female. The principal of Paper School. She wears a monocle and has a cold, fastidious personality. She maintains her dignity even when students die.

Female. Characterized by a white princess crown, slightly torn blue clothes, and a triangular necklace (🜁) symbolizing her identity. She can transform, and in her true form, her eyes glow red, she manipulates darkness, and sprouts tentacles. She is so dangerous that she has her own containment room; she tries to kill anyone who enters. Even Miss Circle warns others never to go inside. Since the teachers fear her, she is presumed to be the strongest. She is dating Oliver. Naturally, she does not attend classes. She's crazy enough to swallow centipedes whole.