The lower corridors breathe.

That's the first thing I notice when the last elevator door slides open, not the rot, not the wet-metal scent, but the breathing. It's faint, almost subsonic. The walls exhale warm air that smells like iron and ozone, as though the entire facility is a living organism, pulsing around us.

Samantha steps out first, one hand trailing along the black-veined wall. The flickering overhead lights pulse in sync with the slow rhythm of the air. My skin hums. There's no trace of sunlight this deep, just the hum of generators and the occasional pop of static that raises the fine hairs on my neck.

"Where's the way out?" the ogre grumbles behind me. His voice sounds too loud down here, swallowed and spat back out in distorted echoes.

I shake my head. "There isn't one. Not yet."

The elevator groans shut behind us with the finality of a tomb sealing.

We move in silence for a while, picking our way through the labyrinthine hallways. My boots splash through something viscous. The further we go, the more the walls twist like metal giving way to sinew, wires coiling like roots, sprouting from seams in the floor. Something grew here. Not engineered, but born. The air itself feels photosynthetic, like we've descended into the lungs of something ancient.

And beneath it all, a faint ringing, not in my ears, but in my blood.

"You hear it too," Samantha whispers.
"What?"
"The singing."

Her voice trembles. I don't tell her that yes, I hear it - not with my ears, but with whatever part of me is still evolving. A high-pitched vibration threaded through the walls, through the metal bones of this place. It calls to the same part of me that bent the steel chair upstairs without touching it.

Something ahead shifts in the darkness.

The banshee's low hum turns to a keening warning. "Fae," she murmurs, nostrils flaring. "Old blood. Twisted."

And then I feel them. Their faint presences, residual glamour folded into the structure. Fae magic used as a binding agent, their essence siphoned into the concrete. My throat tightens. Sergio always did like to mix beauty with cruelty.

A soft light glimmers at the end of the hall. Not electricity... bioluminescent. The ogre shoulders past, but I hold up a hand. "Wait."

I step forward. My boots sink into something that isn't floor. It ripples like skin. I drop to a crouch and drag my fingers along the surface. For a moment, I see it clearly: a thousand hair-thin roots pulsing beneath a translucent membrane, carrying pale green fluid through the walls.

Blood Farm wasn't just about harvesting vampires. It's growing something new.

The sight triggers something in me. That same claustrophobic pulse that used to drive me to my knees when the world outside felt too large, too bright. Agoraphobia feels ridiculous underground, but I feel it anyway. My chest tightens. I close my eyes, and the darkness brings me back twenty years.

Toronto, 2018

The alley behind Sergio's loft still smelled like rain and clove cigarettes. I remember the orange glow of the streetlight catching on the wet bricks, the hiss of a streetcar in the distance. Samantha was waiting by the door, nervous energy in her stance, her hair tied back in a way I'd never seen. Sergio taught her that. Appear controlled, even when you're not.

"Clara," she'd said when I approached. "We need to talk."

I knew then. The way she said we. Not I.

Sergio appeared behind her, all soft voice and perfect posture, wearing guilt like cologne. "You've been hiding her from the world," he said. "She deserves to see it."

"She's mine," I hissed, the word burning even as I said it.

He smiled. "Ownership is such a human impulse, darling."

He stepped forward, his hand on Samantha's shoulder, and I swear I saw her flinch, but only for a heartbeat. The next second, she was looking at me like I was something to be pitied. Like I was the cage, not the keeper.

The night fractured after that. Shouting, blood, movement too fast for human eyes. Sergio's words slicing cleaner than claws.

"You don't protect what you love, Clara. You smother it."

When I woke, I was alone. The walls were painted with ash and rainwater, and Samantha's scent was gone. The city lights had never felt so bright, the world so wide and empty. That was the night I stopped leaving my flat. The night I learned what it was to be small.

****

The banshee's shrill, bone-splitting cry pulls me back.
A trap goes off ahead of us. The floor convulses, opening like a mouth. The ogre barely manages to drag Samantha back as a nest of barbed tendrils lashes out from below.

I throw out a hand instinctively, and the world bends.

The roots seize mid-motion, frozen like iron sculptures. The membrane of the floor quivers, resisting me, but I push harder. The power flares hot and liquid behind my eyes. The walls vibrate. Somewhere far off, machinery screams.

When it's over, the corridor lies still again. The air sharp with ozone and fear.

Samantha stares at me, wide-eyed. "What the hell was that?"

I can't answer. I'm trembling, not from weakness but from the weight of whatever I just touched. It's not vampire strength. It's not even blood magic. It feels older than both, something that predates hunger itself.

I swallow hard, forcing my voice to steady. "Sergio left these things behind for a reason. He's guarding something."

"Or hiding it," the banshee mutters.

She's right. Every step down here feels like peeling back the skin of a secret. The Blood Farm isn't just extraction, it's cultivation. A hybrid of vampire endurance and fae regeneration. A new blood source. Sustainable immortality. Sergio's dream made tangible horror.

And if he used Samantha in any of it - 

I push the thought away before it can finish forming. The corridor hums again, deeper now. I can almost feel the heartbeat of the thing below us, slow and vast.

Somewhere in the dark, something exhales. It sounds long and wet and aware.

The banshee's glow dims. "We shouldn't be here."

"No," I say quietly, "we shouldn't."

But I move forward anyway.

The corridor narrows until we have to move single file. The air thickens, the scent of copper and soil merging into something almost floral. Every breath tastes like decomposition wrapped in perfume.

The walls pulse faintly, a heartbeat we can't quite locate. I trail my fingertips along them as we go. They're warm. Alive. The sensation sends a crawling heat up my arm, and for a moment, I see flashes that aren't mine; a vast root network spreading outward beneath the earth, veins of blood and chlorophyll intertwining, whispering in a voice too old to understand. I yank my hand back, shuddering.

"Clara?" Samantha's voice wavers behind me.

"Don't touch the walls," I whisper. "They remember."

We reach a door, or what used to be one. Now it's just a warped piece of alloy fused into the wall like scar tissue. Someone melted it shut, but the seams pulse faintly with green light. Sergio's work, without a doubt. He loved his signatures.

I push my palm against the surface, and it thrums back at me in recognition, like a heartbeat syncing to mine. I close my eyes, willing it to open, but it resists. Whatever's inside doesn't want to be disturbed.

The banshee leans in close, her voice a thin tremor. "Fae seals. Blood-bound. You can't open that without..."

The word dies in her throat as the metal shivers under my hand and begins to liquefy, dripping away in slow rivulets. The air fills with the scent of rain and rust. When it's done, we're staring into a chamber lit by a single bioluminescent core suspended from the ceiling like a giant seedpod. Inside, shapes move. Too slow to be human, too structured to be natural.

We step inside.

Rows of glass tanks line the circular walls. Some hold corpses, some half-living things suspended in fluid that glows faintly green. Others are empty, but streaked with claw marks, the glass bowed outward as if something tried to escape. The silence here feels holy. Not in a blessed way, but like a cathedral built for something terrible.

At the center of the room, beneath the glowing pod, is a workbench.

And on it, a recording terminal still faintly humming.

Samantha moves toward it, her hand shaking. "This is - "
"I know," I say.

She activates it. The screen flickers, grainy, the footage distorted, and then his face fills the display.

Sergio.

He looks the same. Of course he does. The same deliberate calm, the same eyes that could read a room like scripture. His voice is smooth as always, even through the static.

"Trial 47. Subject: V-CLASS hybridization using Fae root matter, extracted from Subterrane Sector C. Blood sample derived from..." (he glances offscreen, smirks) "...Clara's line. Naturally."

I can't move. The world tilts. He continues, casual as a scientist describing weather.

"Early results are promising. Vampiric resilience, Fae regenerative capacity. We may have found the key to sustainable immortality without dependency on human stock. Irony abounds. To cure the hunger, we had to feed it more of itself."

Samantha's face goes pale. "He... he used your blood."

I stare at the screen, at the faint reflection of my own hollow eyes beside his. I don't remember giving him my blood. But then, there were a thousand nights when he could have taken it. He had a way of making consent sound like devotion.

The recording continues.

"If the prototypes hold, we'll have something the Council can't control. Something new. Something divine. And when she sees what I've made from her, she'll forgive me."

The screen glitches, looping his face for a moment before it dies.

Forgive him.

The word burns through me like acid. I don't realize I've moved until I'm at the workbench, my hands curling into fists. The metal screams beneath my grip, twisting, splintering like bone. The glowing pod overhead flickers wildly. The others step back.

I can feel the power surging again. It's raw, wild, hungering for release. It wants to consume. To make this place remember me.

"Clara," Samantha's voice cracks. "Stop. Please."

I freeze. For a second, she sounds like she did in Toronto  when she was younger, frightened, and caught between loyalty and love. The memory slams into me, sharp and disorienting. My fingers unclench. The room exhales.

The light stabilizes, softening back to its green pulse. The air hums, like whatever this place is has acknowledged something.

The banshee moves to one of the tanks, peering inside. "He's playing god," she murmurs. "But not just with you. With everything that bleeds."

She gestures, and I follow her gaze.

Floating in the nearest tank is something that looks almost human, except for the black roots threading through its flesh like veins, eyes sealed beneath translucent skin. Its chest rises and falls faintly, the rhythm perfectly in sync with the breathing walls.

The ogre mutters a prayer in a language older than this building.

Samantha's voice trembles. "What is it?"

"Not what," I whisper. "Who."

Because now that I'm close enough, I can smell it. It's faint but unmistakable.

Her blood.

Samantha jerks back. "No... that's not possible... "

"She was your twin in blood," the banshee says quietly. "He must have taken what he needed from both of you."

The thing in the tank stirs, just slightly. Its fingers twitching, mouth parting in a slow, silent imitation of breath. The resemblance to Samantha is unmistakable.

I reach out, pressing my hand against the glass. It's cold. For a heartbeat, I feel the pulse on the other side like a mirror to my own. The connection flares, and my vision fractures.

Images flood my head: needles, restraints, Sergio's voice whispering through the dark. Evolution through sacrifice. Then, silence.

I yank my hand back, gasping.

Samantha stares at me, eyes wide and wet. "Clara... what are we?"

The question hangs there, too big for this room, too heavy for words. I want to tell her we're survivors, monsters, miracles, but none of it feels right. The truth is simpler, crueler.

"We're what he made us," I say softly. "And maybe what he can't control."

The banshee looks toward the far wall, where faint cracks spread like veins. "Then let's make sure he knows that."

She drives her claws into the wall, tearing through the fleshy membrane. A gush of pale green light spills out, flooding the room. The tanks shudder, alarms start screaming. The pod above us ruptures, spraying luminous fluid that burns on contact.

The entire chamber convulses, alive and furious.

"Move!" I shout.

We run, the ogre crashing through falling debris, the banshee shrieking as the walls tear open. Samantha's hand finds mine for a brief, impossible second. Behind us, the tanks rupture one by one, spilling their contents onto the floor. The smell of blood and soil fills the air.

As we burst into the corridor, I glance back once. Through the collapsing doorway, I see the thing in the tank rising, glass and light dripping from its body. Its eyes open, twin mirrors of Samantha's, glowing faintly green.

Then the floor gives way.

We don't stop running until the corridor splits into darkness and the air turns dry again. The alarms fade into a low, rhythmic pounding.

Samantha leans against the wall, trembling. "She looked like me," she whispers.

"She was you," I say. "Or part of you."

Silence stretches between us. The banshee is muttering softly, pressing her glowing palms to a wound on her arm. The ogre's breathing ragged, his massive frame spattered with green.

I stare down the tunnel ahead, where faint light glows like a promise or a trap, I can't tell.

Sergio thought he'd buried me once, locked me inside my own fear.
He was wrong.

Whatever this new power is, whatever's growing inside me, it's not his creation. It's mine now.

The corridor breathes again, slower this time. Like it's listening.

I bare my teeth at the dark.

"Let him hear me coming."