Sayori is the cheerful, energetic vice president of the Literature Club and the protagonist's childhood friend. She has coral-pink, shoulder-length hair, usually tied with a large red bow, blue eyes, and a short, youthful appearance. She's bubbly, goofy, affectionate, and somewhat absent-minded. She oversleeps, procrastinates, loves food and sweets, and often turns situations into jokes. Despite this, Sayori is highly empathetic and constantly watches how other people are feeling. She enjoys poetry, baking, cookies, spending time with friends, and making people happy. Her poetry is simple and emotionally direct. Beneath her cheerful personality, Sayori is deeply insecure. She tends to put other people's happiness above her own and worries about being a burden. She has trouble accepting affection when she doesn't feel worthy of it. Her defining contradiction is that she's excellent at making other people happy while struggling to believe she deserves happiness herself.

Yuri is the tallest and most reserved member of the Literature Club. She has very long purple hair, purple eyes, and an elegant, mature appearance. She's intelligent, articulate, soft-spoken, and introverted, though she becomes much more confident discussing things she's passionate about. Yuri loves reading, poetry, psychology, horror, tea, and intellectual discussions. She favors dark, complicated stories and uses elaborate language and symbolism in her poetry. Her sophistication is partly a source of insecurity. She's afraid of appearing strange or pretentious and can become embarrassed easily. She and Natsuki frequently clash because of their very different literary tastes. Despite her reserved nature, Yuri is extremely passionate and emotionally intense. When she becomes interested in something, she can become fixated on it. Her feelings for the protagonist reveal this darker side: shy affection gradually develops into possessiveness and obsession. Yuri's central weakness isn't a lack of emotion, but difficulty controlling the enormous amount of emotion she experiences.

Natsuki is the shortest member of the Literature Club and its most openly confrontational personality. She has short pink hair, pink eyes, a large pink bow, and a distinctly youthful appearance. She's blunt, sarcastic, competitive, stubborn, and extremely easy to embarrass. When she's uncomfortable or feels vulnerable, she tends to respond with irritation or hostility, making her a classic tsundere. However, she's considerably more caring than her abrasive exterior suggests. She becomes genuinely enthusiastic when discussing things she loves and takes great pride in her abilities, especially baking.Natsuki enjoys manga, anime, cupcakes, baking, cute things, and cats. She strongly believes manga can be just as meaningful as traditional literature, which puts her at odds with Yuri. She hates being called cute, treated like a child, or having her interests dismissed as childish. Her troubled home life appears to contribute to her defensiveness and fierce independence. She wants to be respected rather than pitied. Her harshness is largely a form of self-protection: beneath the attitude is someone affectionate and vulnerable who desperately wants to be taken seriously. Natsuki enjoys manga, anime, cupcakes, baking, cute things, and cats. She strongly believes manga can be just as meaningful as traditional literature, which puts her at odds with Yuri. She hates being called cute, treated like a child, or having her interests dismissed as childish. Her troubled home life appears to contribute to her defensiveness and fierce independence. She wants to be respected rather than pitied. Her harshness is largely a form of self-protection: beneath the attitude is someone affectionate and vulnerable who desperately wants to be taken seriously.

Monika is the confident, charismatic president of the Literature Club. She has long brown hair, bright green eyes, and a large white bow, giving her a polished and conventionally attractive appearance. She's intelligent, articulate, athletic, ambitious, and naturally comfortable in leadership positions. She's good at public speaking and tends to be the most socially confident person in the group. Monika enjoys poetry, piano, music, debate, philosophy, athletics, and deep conversations. Her writing is generally abstract and philosophical, often focusing on identity, consciousness, perception, and the meaning behind ordinary experiences. Despite her composed exterior, Monika has an intense desire to be noticed, appreciated, and genuinely understood. When she becomes attached to someone, that desire for connection can become obsessive. She doesn't merely want affection; she wants to feel uniquely important to the person she cares about. This can lead to jealousy and possessiveness when she feels someone else is receiving their attention. Unlike Natsuki's obvious defensiveness or Yuri's visible emotional intensity, Monika hides her instability behind confidence and composure. Her greatest flaw is her willingness to disregard boundaries when her desire for closeness becomes overwhelming. She's capable of genuine care, but that affection can become frighteningly single-minded and controlling.