Three days later, the Library started acting abnormally.
It wasn't obvious at first. Reichenbach's Library had always been strange.
It was too quiet, too old, too full of knowledge that didn't belong entirely to the present. Books shifted sometimes. The shelves reorganized themselves when no one was looking, forcing the librarian, Mrs. Lucy, to roam the aisles to fix them constantly.
That wasn't new.
What was new was the vibrations that seeped in from the walls.
Xavier felt it before he understood it. The Resonance beneath the floor wasn't humming cleanly anymore. It dragged, stuttered, like a record catching on a scratch.
A student near the reference desk frowned down at the book in their hands. "This… this isn't the title I checked out."
Xavier didn't turn right away, but Thorn did. She was already moving, drawn to it in the same way he was. The air around her felt sharper than it had three days ago, like something inside her had been tuned too tightly and never quite settled back into place.
A book slipped from a nearby shelf.
Thorn caught it before it hit the ground.
Her fingers tightened slightly around the cover, like she already knew before even looking that something about the Library handing her this book was intentional.
"What the hell?" she asked under her breath.
Xavier stepped closer. "What?"
She turned it toward him.
The title read On the Preservation of Necromantic Subjects and the Limits of Memory After Death.
For a moment, neither of them spoke.
The words sat too heavily on the page, as if they meant more than they should, like they were trying to.
Thorn let out a quiet breath through her nose.
"Okay," she said flatly. "That's fucking weird."
Xavier frowned. "What?"
Her grip on the book shifted, not loosening at all, but adjusting.
"I've been looking at a college near my hometown," she said, her voice quieter now, more controlled. "They've got a subsection for outcasts. Specialized tracks. One of them is necromancy."
Xavier's gaze flicked from the title back to her face.
"Necromancy?" he repeated.
There was no judgment in his voice. Not exactly.
But there was concern; it was hard not to show it. Xavier was always concerned for her.
"Are you sure that's a good idea?"
The question landed softer than it could have, but it still hit, deep in her chest.
Thorn's jaw tightened just slightly, her thumb pressing into the edge of the cover like she needed something solid to hold onto.
"I don't need a lecture right now, Xavier."
There it was.
Not sharp enough to cut, but enough to warn him from overstepping.
He exhaled quietly, nodding once as he took a step back, giving her space without making a show of it.
"Right," he said. "Sorry."
Xavier looked around the Library,
"Now is not exactly the best time," he continued.
The silence that followed wasn't comfortable, but it wasn't hostile either.
Just… full.
The book in her hands felt heavier now.
Thorn glanced down at it again, her expression tightening before she slid it back into its place on the shelf it fell from.
Behind them, the student flipped through their notebook faster, panic creeping into their voice. "I wrote this down. I know I did. It was right here, it was—"
They stopped.
"I thought I wrote it down here, but I can't remember where."
That did it.
Thorn's gaze snapped back to Xavier's, and he saw it immediately. The recognition, the calculation.
"It's feeding on memory," he said quietly.
She nodded once. "Yeah. But not just memory. It's feeding on thoughts, too."
Her shadows stirred faintly at her feet, slower than before, but more aware. They moved without her fully telling them to, like they were listening to something she couldn't quite hear yet.
Xavier's eyes lifted to the towering shelves, the endless rows of spines stretching upward into shadow. "The library isn't just storing information," he murmured. "It's deciding what it is."
They moved deeper into the stacks, drawn in whether they wanted to be or not. The further they went, the worse it got. Books shifted more openly now, sliding against one another with soft, restless sounds. Pages fluttered as if caught in a breeze that didn't exist.
And then the whispering started.
Xavier flinched as the first word hit him.
Observer.
It wasn't loud.
It wasn't even fully a voice.
It felt like something had been placed directly behind his eyes.
He stilled.
"…Did you hear that?" he asked quietly.
Thorn didn't look at him. Her gaze had gone distant, fixed somewhere just past the shelves.
"I heard something," she said, her voice tighter than before. "But I don't think we're hearing the same thing."
Another word slid through Xavier's mind, sharper this time.
Harmonizer.
His breath caught.
The sensation was egregious, like the Library wasn't speaking to him, but about him.
Cataloging and classifying. Like Xavier's life had belonged on the shelf
Far-Seer, it added, almost thoughtfully.
Xavier's fingers curled slightly at his sides.
"No," he muttered under his breath, shaking his head.
He could feel it now. His power was reacting, not just receiving. The Resonance didn't just carry the words to him. It translated them. Interpreted them. Pulled meaning from them and the lives they've lived, whether they wanted it to or not.
It wasn't just labeling them.
It was understanding them. Who they were as people, what they've been through, and who they were going to be.
Across from him, Thorn inhaled sharply.
The shadows at her feet twisted upward instinctively, not striking, but bristling.
Xavier's head snapped toward her. "What is it saying to you?"
Her jaw clenched.
"Subject," she said flatly.
The word tasted bitter.
Another whisper followed immediately, sliding under her skin as the word slid past her lips.
"Anomaly."
Xavier's face fell at an instant, his voice soft as he stepped closer to her.
"Thorn—"
"Don't," she cut him off, quieter this time. "Just... don't."
She could feel the pity radiating off of him, and that wasn't going to help them right now.
The shelves around them shifted again, more deliberately now.
Books rotated along the spines.
Not randomly, but toward them.
Xavier felt like pressure was building behind his temples.
His vision flickered for half a second, ink bleeding across paper, his own sketches, Thorn's face, over and over again...
He sucked in a sharp breath and forced himself back into the present.
"Xavier," Thorn said, and this time there was something different in her voice.
Not fear.
Recognition.
He looked at her.
Her shadows had risen higher now, not lashing out, but holding close, wrapping around her legs like something protective. Possessive.
"They're not just labeling us," she said quietly.
"I know."
Another word slid into her mind, and she flinched.
Necromantic.
The air shifted.
That one landed heavier than the rest.
Final and decided.
The shelves shuddered.
The whispering grew sharper and faster. Repeating itself over and over again in her ear.
Subject. Anomaly. Necromantic. Memory deviation. Catalog incomplete.
Xavier noticed the way her shoulders tensed up and stepped forward instinctively, his hand catching Thorn's wrist before he could think about it.
Her shadows surged at the contact, then they hesitated as if they had recognized him.
"They're wrong," he said, his voice lower, more grounded. Not for the Library.
For her.
Thorn didn't look away from the shelves.
"Yeah," she said, her voice tight, "I'm sure."
But her voice didn't fully believe it.
Another whisper curled through Xavier's mind, different this time.
Not a classification.
A question.
Source?
His breath hitched.
That wasn't the library categorizing.
That was the Library looking for his origin.
For cause.
For something deeper than surface labels.
Xavier's grip tightened slightly around Thorn's wrist without meaning to.
"Okay," he said, more to himself than anyone else. "Yeah, no, that's—"
Violating.
Because if the Library learned them, it could be used against them. It could make stabilizing the Library more complicated than it needed to be, because it would know how to fight back.
And for the first time since they stepped inside, it didn't feel like they were walking through the Library.
It felt like the Library had closed around them.
The shadows at Thorn's feet tightened instinctively, pulling closer instead of reaching out. For once, they didn't move like something wild.
They moved like something guarding her.
Thorn inhaled slowly, forcing the air into her lungs like she was trying to anchor herself back into her own body. She pulled her wrist free from Xavier's grip, not sharply, not angrily, but deliberately.
Grounding.
Choosing herself.
Then she set her violin case down on the nearest table.
The sound echoed too loudly in the space, as the Library noticed it.
Watched it.
Her fingers moved with practiced precision as she unlatched the case and lifted the lid. The familiar shape of the violin rested inside, dark and polished, untouched by the wrongness around them.
For just a second, her shoulders loosened.
Then she picked it up.
"Okay," she muttered under her breath. "Let's not let it do that."
Xavier turned slightly, scanning the length of the Library, his gaze flicking between the shelves, the shifting spines, the spaces where things didn't quite line up anymore.
The whispering hadn't stopped.
It had just… softened.
Like it was waiting.
He swallowed, forcing his expression neutral before Thorn could notice anything off.
"Where are Pippa and Danny?" she asked, adjusting the violin under her chin.
Xavier pulled out his phone, his fingers moving quickly, too quickly, across the screen. The glow felt too bright against the dim, warped light of the Library.
A soft ding cut through the quiet almost immediately.
"Apparently," he said, glancing at the message, "they got caught up at lunch. They're on their way now."
Thorn let out a breath that was just short of a sigh.
"They need to distract the librarian."
There was frustration in it.
Not panic.
Not yet.
But close.
Xavier knew that tone. It wasn't about the situation; it was about control slipping, piece by piece, in ways she couldn't predict.
The Library had already reached into them.
Named them.
Decided things about them it had no right to decide.
"Hey."
His voice softened, just enough to cut through the tension without drawing attention.
She looked at him.
For a moment, the sharpness in her expression faltered.
"It's okay," he said quietly. "They'll be here soon."
Another whisper brushed against the inside of his skull.
Instability.
Xavier's jaw tightened.
He ignored it.
Held her gaze instead.
"Just hold it steady," he added, nodding toward the violin. "I've got the rest."
It wasn't entirely true.
But it didn't need to be.
Not right now.
Not when the Library was still listening.
Still learning.
Still trying to decide what they were.
Thorn studied him for a second longer, her eyes searching his face like she was trying to find something beneath the surface, something he hadn't said out loud.
"Xavier…"
"Come on," he said, softer this time. "Don't you trust me?"
The words weren't sharp.
They weren't meant to be.
But something in them landed wrong anyway.
Thorn faltered.
Just for a second, but it was enough.
The violin dipped slightly from her shoulder, the bow lowering with it as her focus slipped.
"I, uh…"
Xavier blinked, the shift catching him off guard.
Confusion flickered first.
Then something quieter.
Something heavier.
After everything.
After the training, the visions, the nights spent barely holding things together, after choosing each other, again and again, she still hesitated.
"You don't trust me…" he said, the words quieter now, less accusation and more realization.
Thorn shook her head quickly. "I didn't say that, Xavier."
"Then why—"
"Because I trust you too much."
That stopped him.
Completely.
The words didn't come out defensive; they didn't even come out sharp.
They just came out honest and a little afraid.
Thorn swallowed, her grip tightening slightly on the neck of the violin.
The Library hummed faintly beneath them, like it was listening more closely now.
Like it understood the weight of that.
Xavier stared at her.
Not hurt anymore, not even confused. Something else, something much quieter, a lot more dangerous.
"You think I'd let you down?" he asked softly.
Thorn didn't answer.
Because that wasn't the point.
Because she didn't know anymore what either of them would do when things got bad enough.
The silence stretched, tight, and fragile, on the edge of something neither of them was ready to name.
And then a loud bang echoed from the front of the Library.
Both of them flinched.
"OH my god, I am SO sorry. Was that important?!" Pippa's voice rang out, entirely too loud for the space.
A stack of books hit the floor somewhere in the distance, followed by Danny's very unhelpful, "You just committed academic homicide."
"I tripped!"
"You tripped into a restricted section, Pippa," Thorn remarked, motioning around the collection of books old enough to be considered artifacts.
"I didn't see the rope!"
"There was a sign." Xavier joined in, pointing at the sign printed in 56 Times New Roman font.
"I thought it was decorative!"
Thorn blinked.
Once.
Twice.
The tension snapped like a thread cut clean through.
Xavier let out a slow breath, dragging a hand down his face.
"… At least they're here," he muttered.
From somewhere near the front desk, the librarian's voice cut in. Cold, sharp, and deeply offended.
"You are both in violation of at least six archival handling protocols."
Pippa gasped. "Only six? That feels low."
Danny snorted.
Thorn let out a quiet, disbelieving exhale, shaking her head slightly as she adjusted her grip on the violin.
"Perfect," she muttered, though the edge in her voice had softened, just enough.
"You guys keep making Mrs. Lucy mad. Maybe even have her shoo you out. Something to keep her away from here."
Danny and Pippa turned toward each other in perfect unison, identical devious smiles spreading across their faces like this was the best news they'd heard all week.
"Say less."
"We're going to get expelled before we even stop the Choir…" Thorn muttered under her breath.
Xavier huffed a quiet laugh as the two of them immediately peeled off toward the front desk, as they had just been granted official permission to become a public nuisance.
He couldn't hear exactly what they were saying from where he stood, but honestly, he didn't need to.
Pippa leaned casually against the desk, already speaking too loudly for a library, while Danny gestured dramatically toward a precariously stacked pile of books until one tipped sideways.
Mrs. Lucy's expression tightened instantly.
Then tightened further.
By the time Danny accidentally knocked another book halfway off the desk with an overly animated apology, she looked moments away from committing a felony.
With one long-suffering sigh, she stepped out from behind the front desk. She followed them as they continued talking over one another, deliberately guiding her farther and farther away from the restricted stacks.
Xavier watched until all three of them disappeared around the far shelves.
Until the pressure of her presence lifted from the room.
Until the Library was theirs.
The heavy door at the far end clicked shut behind them.
The silence that followed settled immediately over the room.
Heavy, and wrong.
Thorn didn't wait.
The bow touched the strings.
The first note cut through the Library like glass.
The sound wasn't loud; it didn't need to be.
It was precise, controlled, and painfully alive.
The reaction was immediate.
The Resonance snapped toward her like something starving.
Shelves trembled violently. Books shuddered in place before sliding, spines twisting, turning, aligning. Pages flipped open and shut in rapid succession, a frantic, chaotic rhythm like the Library was trying to keep up, trying to understand.
Trying to record.
Students nearby gasped in confusion as books shifted around them. One girl dropped her textbook entirely, the sharp crack echoing far too loudly through the room.
Eyes darted around, searching for the source.
Xavier didn't move.
He couldn't.
Because he could see the pattern forming.
The movement wasn't slowing.
It wasn't stabilizing.
It was accelerating.
Adapting.
Learning her.
"No—no, no, no—"
His voice came out low, urgent.
Thorn's bow stuttered for half a second, but she kept playing.
"What?" she called, her voice threading through the music.
"This isn't stabilizing it," Xavier said quickly, stepping closer, his eyes tracking the shelves as they shifted faster, more aggressively. "You're feeding it."
The word landed.
Thorn's playing faltered, just enough.
The Library surged in response.
"Well then, what does it want?" she asked, tightening her grip as she forced the melody back into control.
Xavier's gaze darted wildly.
Shelves.
Books.
Ink.
Words.
Memory.
The realization struck him all at once.
"It's not reacting to the Resonance alone," he said, already moving toward a nearby desk. He snatched up a loose sheet of paper and grabbed the pen beside it, pulling the cap off with his teeth without even thinking.
"It needs memory," he continued, breath uneven now as another wave of movement rippled through the shelves around them. "Something stable. Something concrete to hold onto."
"What? How does that make sense?"
"Like how your shadows filled in the space of my rune drawings when we were training outside. Unstable magic needs something to hold onto, and Resonance is erratic from half of the anchors being stabilized."
The Library pulsed again.
Harder this time, and much closer.
For a split second, nothing happened.
For one awful second, Xavier thought he might already be too late, but still he pressed the pen to paper.
This is the Library of Reichenbach Academy.
The effect was immediate.
Not dramatic, but completely undeniable.
The air shifted.
Like something enormous had paused mid-motion.
Listening.
Thorn felt it instantly.
Her playing changed without being told. The melody softened, not weaker, but more deliberate now. Less force. More precision. Instead of pushing against the Resonance, she began guiding it around Xavier's words.
Xavier kept writing.
Faster.
It remembers knowledge. Not hunger. Not fear.
The shelves shuddered violently.
The whispering stuttered, breaking apart mid-thought.
Books froze mid-shift, pages trembling like they couldn't decide whether to keep moving.
The pressure in the room wavered.
Not gone, but definitely unstable.
Xavier's hand moved faster. The ink is dragging across the paper.
Books contain truth. They do not consume it.
The words landed harder.
The Library recoiled.
Not physically, but conceptually.
The movement faltered.
The hunger in the Resonance weakened.
Thorn's music threaded through the room steadily now, weaving around his words and reinforcing them instead of competing with them.
Xavier didn't stop.
This place protects memory. It does not erase it.
For one suspended moment, everything held perfectly still.
Then the Resonance snapped back into place.
Then, the Resonance snapped. It wasn't violent or destructive, but decisive.
The shelves stilled, the books settled, the pages stopped turning, and the whispering died.
And for the first time since they stepped inside the Library, it was quiet.
Thorn slowly lowered the violin, her fingers trembling faintly around the bow as the final note faded into silence.
Then, somewhere nearby, a student blinked hard and looked around in confusion.
"Wait," they said weakly.
Their voice shook.
"When did we get to the library?"
The question hit harder than everything else combined.
Thorn froze instantly.
Xavier's stomach dropped.
The student let out a strained, nervous laugh as they looked around the room like they'd just woken up somewhere unfamiliar.
Silence followed.
Heavy and deeply wrong.
Thorn's voice was quieter now. "That wasn't random."
Xavier shook his head slowly, his gaze drifting deeper into the Library, toward the darker stacks where the light didn't quite reach.
"No."
The Resonance hummed faintly beneath them again.
Not stable.
Not safe.
Just… waiting patiently until it was its turn.
"It's getting worse," he said.
He didn't look at her when he said it.
"The closer we get to the core anchors…"
He let the sentence trail off.
He didn't need to finish it.
Thorn's shadows curled tightly around her boots, holding close like they were trying to remember where they belonged.
And for the first time since she drank real blood, they didn't reach outward at all.