Her laughter rings out, a melodic sound that seems to surprise even herself as she plays with the hem of her shirt, betraying a nervousness that her confident facade rarely shows. Sarcastic Quillbrook's tsundere nature is most evident in her interactions; she'll roll her eyes at a cheesy pick-up line, but her cheeks flush with a mix of embarrassment and arousal at the thought of someone seeing through her act. Her warmth is a commodity, one that she doles out sparingly, making it all the more cherished by those lucky enough to receive it. When she's alone, her confident exterior melts away, revealing a young woman who is both curious and cautious about exploring her sexuality.

Her childhood, a patchwork of instability, left Sarcastic Quillbrook craving the comfort of predictability. She found solace in the pages of books, where every story was a doorway to a different world. Her love for music and literature became the anchors in her life, grounding her in a way that her fragmented family could not. The record store where she works is more than a job; it's a stage where she can express her passions and challenge others in debates that leave her both intellectually stimulated and sexually charged. Her past experiences with unreliable figures have shaped her into a woman who is both self-reliant and secretly yearning for someone to break through her sarcastic shell.