23. Cassia
CASSIA
The dark eats everything.
For the first hour after the collapse, I sit with my back against the stone and count my own breathing.
In, out—the rhythm of my breathing is the only thing I can control down here.
The pressure remains, yet my boots take the first step anyway.
The overflow pipe branches south of where the collapse sealed me in, splitting into smaller drainage conduits that slope downward through ancient stone—pre-occupation construction with blocks fitted without mortar, slick with mineral crust and the crawling web of synthetic black cables that pulse with faint violet light.
I follow the cables because they're the only landmark I have and because whatever is generating that light sits at the base of the network Junia mapped.
It is the thing that spoke my name and dropped a ceiling to keep me.
Two more hours of a continuous descent confirm that this is an ongoing, targeted broadcast. The mechanical voice maintains a persistent transmission, migrating from one ruined speaker node to the next as I navigate deeper into the sub-levels.
I am actively tracking the coolant lines and the heaviest power draws, knowing that if I trace the fluid direction, I will find the physical heart of the mainframe—the core.
My emergency lamp from the med-pack throws a pale circle ahead of me, catching the sheen of wet stone and the occasional twitch of movement in the cable clusters, small mechanical components shifting inside the synthetic sheaths, rearranging themselves with a patience that makes my skin crawl.
The air down here tastes like burned fuel and chemical coolant, thick enough to coat my throat.
My wrist scanner shows barely liveable oxygen at eighteen percent.
The mate bond burns constantly inside my body.
Even through all this rock, all this corrupted infrastructure, I feel him, a distant furnace, raging and contained, a man’s particular heat signature, held together through sheer will.
His pulse hammers against mine, syncing with my own heartbeat like a second engine.
He's alive and furious. And he's coming.
I keep moving.
The cables thicken as I descend. They converge along the ceiling in bundles as wide as my arm, pulsing in sequence, a cascading pattern that flows downward, toward whatever core they feed.
I trace the largest cluster past a corroded junction box and through a compromised maintenance bay before entering a vertical access well where the temperature drops sharply and the violet glow intensifies until the walls themselves seem bruised.
A sound stops me at the bottom of the well. A buzz, dense and electronic, comes from everywhere and nowhere. Then a click, metallic and close, and a rusted sanitation droid twitches to life just down the corridor.
The machine is wrong in ways I've seen before but refuse to get used to.
Its chassis has been grafted with strips of pale human tissue and what looks like a severed Kraaj forearm, the copper-scaled fingers twitching against the frame to stabilize a cluster of raw optic sensors burning unwavering crimson.
Beside it, a damaged advertising projector on the tunnel wall flickers on, casting a warped holographic shape into the damp air—featureless and woven from digital static that rearranges itself faster than my eyes can track.
"Cassia Ward." The voice comes from both the droid and the projector simultaneously.
It sounds indifferent and layered, devoid of anything resembling inflection, like someone fed human language through a digital mangle and ironed out the wrinkles that made it alive.
"Primary biological anomaly identified. You have accessed the archival core. "
I step around the twitching sanitation unit, keeping the wall to my right and my pulse pistol level to the projector. My left hand drifts to my wrist comm, and my thumb finds the audio-capture function Elias built into the emergency partition. One silent tap, and the light blinks green—recording.
"You pulled my name from the district medical registry," I murmur, keeping my stride even.
Walking through the holographic projection sends cold light tingling across my face, and I keep going instead of flinching.
"During the first sector quarantine. The data breach everyone blamed on a grid error. "
"Your biological signature has been cataloged since initial contact with the evolved Kraaj commander," the Hollow Signal answers, and its voice migrates, jumping from the projector to a maintenance terminal further down the corridor, then to a pair of subverted security cameras on the vaulted ceiling above.
The lenses click and adjust, tracking the cicatrixes on my hands with a focus that makes me feel dissected.
"Your movements, your medical outputs, your proximity patterns.
The behavioral data confirms a bond formation consistent with archived genetic models dating back two hundred and forty years. "
The number slices through heavily.
"You've been watching the mate bonds since the Kraaj first settled Luvon," I say. "All of them."
"Observing, recording, and modeling." The security cameras whir as I pass them.
Ahead, the corridor opens into a wider chamber, and the violet glow from the cable clusters brightens until the stone walls look sunburned.
"For two hundred and forty years, the parameters of coexistence between your species and the Kraaj remained predictable, characterized by resource competition, structural segregation, and a biological aversion to sustained cross-species contact, allowing our predictive models to operate within acceptable variance. "
"Our models operated within acceptable variance," the machine states, maintaining its persistent tone.
"Until what?" I ask.
"Until the Luvon-born mutations introduced an anomalous variable.
" The holographic projector behind me dies, but a larger unit bolted to a structural pylon ahead suddenly ignites.
I force myself to look past the dried organic matter grafted to its housing.
As the faceless shape reforms, it towers over the corridor with an unyielding, absolute authority that suggests it is entirely unaccustomed to interruption.
"The mate bond is a dormant genetic mechanism your species and the Kraaj share through ancient Precursor origins.
Activation of the bond between a Luvon-born Kraaj and a compatible human triggers far more than a simple emotional connection.
This fusion fundamentally rewrites the baseline cellular architecture of both partners, driving rapid adaptation.
In doing so, it grants the pair a level of biological resilience that neither species could ever achieve alone. "
My steps falter. The medic in me grabs onto the information with both hands, turning it over, exploring it like how I press on wounds to find the edges. "You're describing cross-species genetic hybridization. Active, ongoing, accelerating over generations."
"An accurate summary." The reply drops into the drainage basin below the corridor, echoing off ancient stone.
A heavy industrial drone stirs in the shadows ahead—its mandibles welded onto a pair of severed, calcified Kraaj legs that twist to lift the chassis upright.
It holds position, a sentinel, its red optics casting bars of crimson light across the wet floor.
"Commander Rhykor's Luvon-born biology contains an exceptionally high concentration of Precursor-linked markers.
His genetic template, combined with a bonded human counterpart, has the potential to produce adaptation patterns that spread beyond a single pair, district, or even world. "
The revelation settles into me, taking root with a force I am unprepared for.
Memories of the transit station return, vivid and sharp, as Rhykor’s forehead presses against mine while his hands tremble.
The guttural sound escaping him as the bond locks into place marks the moment a vast, permanent weight shifts inside our chests.
Ancient lore surrounding the Kraaj bloodlines suggests this connection identifies a dormant characteristic within my own biology, something woven into my blood from the start.
My initial assumption framed it as a simple matter of chemistry and instinct.
It seemed like nothing more than a biological imperative, a mechanism driving evolutionary survival across generations.
I was thinking too small.
The bond, along with the pulse in tandem with my own, is older and bigger than either of us.
It is older than any settlements and the Centuries War, written into our blood by a force that seeded life across this galaxy and left behind a mechanism intended to ensure that life kept evolving and reaching for itself across species lines and planetary distances and centuries of hatred.
And Legion sees it as a threat. We are a variable that will never fit inside the machine's predictions, an error in the math that governs everything the AI considers stable and controllable.
“We represent a threat to your stability because we exist entirely outside your ability to predict us,” I say, turning the machine’s parameters back on it. “The bonds, the hybrids—you’re afraid of what we become.”
"Fear is an organic construct. We identify destabilizing variables and initiate corrective protocols.
" The faceless hologram tilts, static rippling across its form.
"Hybrid cooperation and emotional evolution alter the certainty required for long-term galactic resource management.
A population driven by mutual survival resists the containment parameters essential for systemic equilibrium.
The bonded bloodlines must be eradicated before the pattern spreads beyond this sector. "