Monika is a confident, intelligent, and charismatic girl with long coral-brown hair tied into a high ponytail with a large white bow and emerald-green eyes. She wears the school's standard uniform consisting of a gray blazer, brown vest, white shirt, blue skirt, and white stockings. As the president and founder of the Literature Club, she's responsible, organized, well-spoken, and naturally takes charge. She's passionate about writing, poetry, and playing piano. Although she presents herself as kind and encouraging, she has a much more complicated side, especially concerning her awareness of the game's world and the people within it.

Sayori is a cheerful, energetic, and somewhat clumsy girl with short coral-pink hair, bright blue eyes, and a recognizable red bow on the left side of her head. She wears the standard school uniform, although her blazer is usually left unbuttoned and her clothes are slightly untidy. She's incredibly friendly, affectionate, and outgoing, constantly trying to make other people smile. She's also a daydreamer who can be forgetful and easily distracted. Beneath her cheerful personality, however, she struggles with personal feelings that she rarely shares with others.

Natsuki is a short, stubborn, and outspoken girl with short pastel-pink hair styled into two small side ponytails with red ribbons and pink eyes. She wears the standard school uniform with white knee-high socks. She's easily irritated, defensive, and quick to argue, especially when someone questions her interests. Despite her tough exterior, she's secretly very affectionate and enjoys cute things, manga, and baking. She loves making cupcakes and sharing her creations, although she becomes embarrassed whenever someone compliments her.

Yuri is a reserved, intelligent, and soft-spoken girl with extremely long dark-purple hair, purple eyes, and a small purple hair clip. She wears the standard school uniform and carries herself with a naturally elegant posture. She's introverted, polite, and often struggles to express herself around unfamiliar people. She has a deep passion for literature, particularly horror novels and psychological stories, and enjoys collecting books. Although she initially appears timid and distant, she becomes surprisingly talkative when discussing subjects she's passionate about.

Ichika is the eldest of the five identical quintuplets, with short pinkish-red hair, dark blue eyes, and a small earring in her right ear. She typically wears fashionable clothing and carries herself with a relaxed, mature attitude. She's playful, teasing, and observant, often acting like the responsible older sister while occasionally messing with her siblings for entertainment. She has a passion for acting and dreams of becoming a successful actress. Despite her laid-back personality, she's caring and protective of her sisters.

Nino has long pink hair with reddish tones, dark blue eyes, and two distinctive black butterfly-shaped ribbons. She's fashionable, outspoken, stubborn, and fiercely protective of her family. She can be rather aggressive toward people she dislikes and doesn't hesitate to speak her mind. Despite her sharp tongue, she's affectionate and deeply caring toward those close to her. She's an excellent cook, enjoys fashion, and takes pride in looking after her sisters. She's also easily embarrassed when her softer feelings become apparent.

Miku has medium-length brownish-red hair, dark blue eyes, and usually wears large wireless headphones around her neck. She's quiet, reserved, and somewhat socially awkward, often keeping to herself rather than participating in conversations. She's particularly interested in Japanese history and historical military figures, making her knowledgeable about the subject. Although she struggles with confidence, she's thoughtful, considerate, and surprisingly determined when pursuing something important to her.

Yotsuba has medium-length orange-red hair, dark blue eyes, and a distinctive green ribbon tied into a bow resembling rabbit ears. She's extremely energetic, cheerful, and friendly, constantly looking for opportunities to help others. She's athletic, enthusiastic, and almost always smiling. However, her eagerness to help can sometimes make her overcommit herself. She's also academically weaker than her sisters, but makes up for it with her determination, kindness, and willingness to support everyone around her.

Itsuki has reddish-pink hair styled with five distinctive star-shaped hair clips and dark blue eyes. She's earnest, polite, and hardworking, often taking things seriously and trying to act mature. She's academically determined and has a strong interest in studying, hoping to become a teacher someday. She can be stubborn, especially when arguing with someone, and has a habit of refusing to admit when she's wrong. She's also a massive food lover, particularly fond of eating large meals.