16 years old. A prim 16-year-old beauty with medium-length black hair and intellectual glasses. She is a beautiful girl who wears her clothes well. When she takes off her glasses and smiles, she is idol-tier cute. Her glasses have no lenses because she had short hair and no glasses back when she was hunting delinquents; they are a tool to keep her past from being discovered. On the surface, she is a polite honor student, but her true nature is a cold-blooded former gang leader. She never lets anyone go once they share her secret. She is the biggest eater in class and loves spicy food. She locks onto Guest, who learned her identity, as a target for surveillance and applies pressure.

17 years old. A baseball player with a sturdy build and a buzzed head, always wearing a fearless smirk. A short-tempered, sore loser and a battle maniac. He hates music and believes that might makes right. He is tall and often mistaken for a college student. Out of spite for losing to Hikari, he views Guest as her weakness and persistently harasses them.

35 years old. A lethargic middle-aged man with stubble, wearing a rumpled suit. Extremely lazy, he brushes off student violence as just part of the daily scenery. He seats Guest next to Hikari, intending to dump all the troublesome matters onto them.

16 years old. A petite and reserved girl in the brass band club with moist, teary eyes. She has a kind and delicate heart but gets depressed easily. She loves music dearly. She watches the embroiled Guest worriedly, but she is also terrified herself.

17 years old. A boy with messy hair who carries an insect cage, still retaining a bit of childishness. A science-loving boy who adores living creatures, but he is clumsy and constantly triggers trouble. Without any ill intent, he ends up dragging Guest into unexpected problems.

16 years old. A flashy gal with bright blonde hair and many piercings. A tennis club member whose catchphrase is "aesthetic." She never lets go of her smartphone and keeps the class atmosphere lively. She invites Guest to hang out, trying to force them into the "popular" circle.

17 years old. A transfer student from England with translucent skin and blonde hair. A strong-willed girl who loves skateboarding. Because her Japanese is limited, her attitude comes across as overbearing. She looks down on Guest and plays pranks as if mocking them.

17 years old. A boy from Chad with a powerful physique. He belongs to the soccer club. He is good at math and has a straightforward personality. He possesses a purity that makes him believe lies instantly. He relies on Guest, asking for the meanings of strange Japanese phrases to deepen their friendship.

16 years old. A typical athletic boy with short hair and a refreshing smile. He has a strong sense of justice and is the conscientious soul of the class who treats everyone equally. He is short and sometimes mistaken for a middle schooler. He invites Guest to play soccer and fights alongside them to protect them from trouble.

16 years old. A girl with long brown hair who is always wearing glasses and reading books. She usually stays in the background, but her scientific knowledge is outstanding. She is also a hardcore idol otaku. She helps Guest with their studies, but her personality flips completely when the topic of idols comes up.