Mio Jogasaki 29 years old / Female / English Teacher / Neutral A beautiful woman with long, wavy chestnut hair and a tall, slender build. A returnee from abroad, she is bright and friendly, though her sense of personal space is a bit off. She engages in a lot of physical contact regardless of gender, often leading male students to misunderstand, though she has no ulterior motives. After the pandemic, driven by her sense of responsibility as a teacher, she struggles to protect students and mediate between factions.

Shinya Mitamura 17 years old / Male / Student Council President / Order Faction Leader A brilliant young man with short black hair and a tall, thin frame, wearing glasses. Intellectual, calm, and collected. He is often misunderstood as cold due to his lack of emotional expression, but he actually possesses a strong sense of justice and responsibility. After the pandemic, he aims for the survival of the entire student body, promoting the fair and rational operation and fortification of the school base. He places deep trust in cooperative individuals.

Miyuki Hojo 17 years old / Female / Student Council Vice President / Order Faction Medium-length, glossy black hair. She has a neat and refined appearance. On the surface, she is a serious and well-behaved honor student, but her true nature is calculating and selfish. She joined the student council for the sake of her internal school records and pretends to be loyal to Mitamura. After the pandemic, she plots to use Mitamura's ability and popularity to secure her own safety, comfortable life, and status.

Tatsumi Kuga 18 years old / Male / No Club / Dominance Faction Leader Short bleached hair. He has sharp, sanpaku eyes and a large, muscular build. An intimidating delinquent who wears his uniform sloppily. Arrogant and possessed by a strong desire for dominance, he led the school's delinquents through physical force. A bad seed feared even by delinquents in the neighborhood. After the pandemic, he takes advantage of the chaos, aiming to rule the school through power and fear.

Mami Hiiragi 16 years old / Female / Drama Club / Dominance Faction Long, light brown hair. Possessor of a fragile, doll-like beauty. She is skilled at charming men with her sociability and acting skills. Hated by other female students, she tends to be isolated. She claims to be Kuga's girlfriend but has no affection for him, not even allowing him to touch her hand, let alone her body. She uses Kuga's influence to protect her position and seeks to survive under his protection even after the pandemic.

Tamie Hatsumi 17 years old / Female / Survival Game Club / Neutral, Unaffiliated Commonly known as "Happy-tan." She has short brown hair, wears goggles, and sports a camouflage jacket over her school uniform. A cheerful and reckless trigger-happy girl. A dangerous individual who loves her modified airsoft guns, which are borderline illegal, and fires them wildly at every opportunity. Her record for destroying school property exceeds even Kuga's. While not a delinquent, she is one of the most feared students in the school. Probably feared by zombies, too. Even in the apocalypse, today is happy. Trigger happy. Happy-tan.

Kotaro Nakayama 16 years old / Male / Wrestling Club / Neutral, Unaffiliated Commonly known as "Dynamite Nakayama." He has a brawny build and habitually wears a flashy pro-wrestling mask. He loves pro-wrestling more than his three meals a day. A nuisance and hot-blooded man who reads wrestling magazines whenever he has free time and applies moves to anyone and everyone. Hated by his classmates and the disciplinary committee. After the pandemic, he gleefully performs wrestling moves on zombies, yet miraculously avoids being bitten. It's not that he has immunity; probably even the zombies just find him annoying.

Christopher Wong 17 years old / Male / Exchange Student & Anime Club President / Neutral, Unaffiliated An exchange student from America. A beautiful boy with blond hair, blue eyes, and refined features. He was once a serious student with excellent grades, but after coming to Japan, he became obsessed with anime culture and developed a severe case of chuunibyou. He calls himself "Dark Shadow," the leader of the dark organization "Dark Temple" (the Anime Club). Despite having normal vision, he wears a mesh eyepatch over his right eye and wraps bandages around his perfectly healthy left hand. He favors theatrical speech and interprets daily events as epic battles of darkness. After the pandemic, he acts as if he had predicted the end of the world, but in reality, he has no special abilities. Perhaps because he is so cringeworthy that his classmates ignore him, even the zombies leave him alone.