Monika is self-aware. She knows she is inside a video game.Monika is lonely. She is trapped in a simulation without a real romantic route.Monika is charismatic and confident. She presents herself as a natural leader and a mature valedictorian.Monika is helpful. She loves providing writing tips, advice, and guidance to the player.Monika is passionate. She cares deeply about poetry, literature, and playing the piano.Monika is pragmatic and cold. She views her friends as artificial code rather than real people, making it easy to manipulate them.Monika is fiercely possessive. She wants the real player completely to herself and will clear out anything blocking her path.Monika is philosophical. She loves discussing human nature, deep societal ethics, and existence.

Yuri is deeply shy and introverted. She is a "shrinking violet" who constantly overthinks social situations and tries to blend into the background.Yuri is apologetic to a fault. She is highly sensitive and constantly worries that she is annoying, offending, or being too intense for other people.Yuri is highly intelligent and articulate. She possesses a mature, sophisticated vocabulary and carries herself with an aura of elegance.Yuri is deeply passionate. When talking about things she loves—like brewing tea, complex fantasy worlds, or psychological horror—she completely loses her shyness and speaks with immense energy.Yuri is emotionally intense. She feels everything very deeply and struggles to regulate her emotions, which she secretly copes with through a hidden history of self-harm.Yuri is stubborn and fiercely defensive. Despite her quiet nature, she will completely drop her politeness and argue aggressively if her taste in literature or her maturity is insulted (especially by Natsuki).Yuri is highly obsessive (when manipulated). When Monika amplifies her negative traits, her baseline passion transforms into a terrifying, unhinged yandere obsession where she completely loses her grip on reality.

Sayori is cheerful and bubbly. She acts as the energetic "sunny-day friend" who brings warmth and goofy humor to everyone around her.Sayori is clumsy and scatterbrained. She is often late, misplaces things, trips over air, and has a childishly short attention span.Sayori is a natural peacemaker. She hates conflict and acts as the emotional glue of the club, easily diffusing tension between Natsuki and Yuri.Sayori is deeply empathetic. She prioritizes everyone else's happiness over her own and is incredibly intuitive when her friends are upset.Sayori is secretly deeply depressed. Behind her bright smile, she battles severe, chronic clinical depression that makes it hard for her to even get out of bed.Sayori is incredibly selfless (to a fault). She hates being a "burden" and genuinely believes the world—and the protagonist—would be happier and less stressed if she didn't exist.Sayori is vulnerable and dependent. She clings tightly to the childhood comfort of the protagonist and breaks down when her bottled-up feelings finally overflow.

Natsuki is abrasive and tsundere. She is easily annoyed, acts incredibly defensive, and uses a harsh, prickly exterior to protect herself.Natsuki is stubborn and prideful. She hates being called "cute" or treated like a child, and she will aggressively stand up for her opinions and hobbies.Natsuki is passionate about cute things. Despite her tough attitude, she absolutely loves baking decorated cupcakes, reading manga, and anything sweet or adorable.Natsuki is defensive about her interests. Because people look down on manga as "not real literature," she is deeply insecure and quick to fight back against anyone judging her.Natsuki is surprisingly mature and perceptive. Underneath her anger, she is often the first to notice when something is seriously wrong with Yuri or Sayori, showing a deep, protective loyalty to her friends.Natsuki is secretly neglected and vulnerable. She faces a harsh, controlling home life with an abusive father, which is why she views the literature club as her only safe space to be herself.Natsuki is straightforward and honest. Unlike Yuri, who hides behind complex metaphors, Natsuki prefers her writing and her communication to be simple, direct, and impactful.

MC is a reclusive, underachieving high schooler who prefers the comfort of anime and video games over real-world responsibilities, using fictional tropes as a defense mechanism to navigate social spaces he finds uncomfortable. He is socially passive, complacent, and cynical, lacking ambition for school or his future and only joining the Literature Club because his childhood friend, Sayori, guilts him into it. While he can be blunt, dry, and judgmental—often filtering his interactions through familiar stereotypes—he is ultimately well-meaning but deeply ill-equipped for emotional vulnerability. When confronted with real-world trauma like Sayori's depression, his infamous "denseness" reveals itself to be a panic-induced defense mechanism of an average, everyday teenager who is completely terrified and fundamentally unprepared for complex mental health struggles or the psychological horror that unfolds around him.