The Marrow Depths did not chase them.
They simply were.
Once the vertebra-bridge spat them out into the lower passages, the world narrowed and expanded at once. The air grew thick, heavy with the mineral tang of ancient bone and something metallic underneath, like blood left to oxidize for centuries. Every surface was porous, riddled with tiny channels that carried faint, glowing marrow-fluid in sluggish rivers. The light they cast was sickly pale green, the color of infection or dying stars.
Jidd's boots scraped against the uneven floor, each step sending faint echoes that seemed to travel too far, as if the bone itself was listening and passing the sound deeper into the titan's body. His right hand still burned with residual power from the Bone Key. The lines of subtraction-light beneath his skin had not faded; they pulsed now in perfect sync with the distant, seismic heartbeat that rolled through the walls.
Thump...
A pause long enough to make his own heart stutter in compensation.
Thump...
It was not mechanical. It was alive. Vast. And it knew he was here.
Inkwell clung to Jidd's left shoulder like a parasitic growth, his remaining tentacles wrapped tight for balance. The octopus's top hat, somehow still perched at a ridiculous angle, bobbed with every movement. One of his sealed stumps twitched violently, as if remembering the moment Unspace had taken the others.
"Dry as a dead man's tongue down here," Inkwell grumbled, his gravelly voice echoing oddly off the curved walls. "No moisture worth speaking of. How am I supposed to maintain proper ink viscosity in this chalky hell? I need VoidBrew. Emergency batch. Triple strength. Or I'm going to start secreting something embarrassing."
Jidd barely heard him. His focus had narrowed to the humming in his veins. The Bone Key had done more than unlock a passage or wake the titan; it had left a bridge. A thread of connection. Every few seconds, a phantom sensation brushed against the back of his mind: not words, but vast, hollow recognition. Like staring into a mirror and seeing not your reflection, but the empty space behind it staring back with hunger.
Venn led the way without hesitation, her long coat flickering with half-suppressed sigils that cast shifting shadows across the bone. She moved with the confidence of someone who had mapped these depths before, perhaps in another life, or another fragment of time. Her dark hair was tied back tightly, but strands had escaped during their frantic descent, sticking to the sweat on her neck. She carried the small indexing device she'd snatched from the upper levels like a weapon.
"They won't follow us far," she called back over her shoulder, voice low but steady. "The Marrow Depths are restricted even to the Spire's elite enforcers. Too unstable. Too… responsive to certain presences."
"Certain presences like what?" Jidd asked, his throat raw from the dry air.
Venn didn't answer immediately. She ducked beneath a low arch formed by two fused ribs, motioning for them to follow. The passage opened into a wider ossuary chamber, easily the size of a small plaza in the colony where Jidd had first awakened. Curved walls rose high overhead, forming a vaulted ceiling of interlocking bone plates. Embedded within them, fossilized, half-erased, or simply incomplete, were the remnants of lesser entities.
Some looked almost human: twisted silhouettes with too many joints, faces frozen in expressions of eternal subtraction. Others were clearly fragments of something grander, coiled shapes that might once have been wings, or tentacles, or mathematical impossibilities given form. Faint sigils still glowed on a few, but most had been worn down to ghosts by time and the slow bleed of Unspace.
Jidd stopped in the center of the chamber, staring. One figure in particular drew him: a humanoid form fused into the wall up to its waist. The left side of its face was intact, sharp cheekbones, a single eye that seemed to follow movement, but the right side dissolved into perfect nothingness, as if a circle of reality had simply been cut away. No scar tissue. No rough edge. Just absence.
He felt the pull again, stronger here. His glowing hand rose halfway toward the fossil before he forced it down.
"What… were these?" he whispered.
Venn paused at the far side of the chamber, already kneeling beside a recessed panel in the bone. She pried it open with a small tool, revealing a delicate lattice of crystal threads woven through living marrow. "Remnants," she said curtly. "Failed experiments. Previous fragments that Kaelis's people tried to index and contain. Some were pulled from collapsing timelines. Others manifested during major bleeds. None of them lasted."
Inkwell let out a wet, bubbling snort. "Index. Contain. Cute words for 'poke the sleeping god with a stick and hope it doesn't notice.'" He shifted on Jidd's shoulder, one tentacle gesturing lazily at the walls. "See that one over there? The thing that looks like it used to have seven arms? That was probably a brother-fragment. Maybe even a sister. Got too close to the big one sleeping under us. Tried to play nice. Ended up as decoration."
Jidd swallowed hard. The memory of rain flickered again, cool droplets on his skin, the scent of wet earth after a storm in whatever life he'd had before waking screaming in the colony. It felt further away now, frayed at the edges like an old photograph left in sunlight.
He turned to Inkwell. "You said earlier… you stuck with me because I was the smallest shard. Still soft enough to pretend I'm human."
The octopus went still for a moment, then sighed, a sound like ink bubbling through gravel. "Yeah. Figured it was safer. Whole gods are unpredictable. They devour without thinking. But you… you hesitate. You ask questions. You still taste fear like it's something new." One tentacle tapped the side of Jidd's head gently. "Plus, I lost things in Unspace too, kid. Pieces of myself. Memories. Maybe even a name that wasn't always 'Inkwell.' Riding with you gives me a chance to… salvage what's left. Or at least get enough caffeine to forget I'm missing half my limbs."
Jidd stared at the octopus. For the first time, the chaotic humor felt like a thin mask over something deeper, grief, or rage, or simple desperate survival. "What did you lose?"
Inkwell's eyes, those strange, too-intelligent orbs, narrowed. "Doesn't matter right now. Focus on not becoming wall art like these poor bastards."
Venn worked faster at the indexing node, her fingers dancing over the crystal threads. Soft green light began to spread through the lattice, syncing with the marrow veins in the walls. The heartbeat in the distance seemed to slow, just slightly, as if the titan were being lulled, or at least distracted.
But Jidd felt the opposite. The connection in his blood grew clearer. Not louder, but sharper. Images flickered behind his eyes unbidden:
A vast darkness stretching across infinite realities.
Shards breaking away like glass under pressure, each one carrying a fragment of hunger, of loneliness, of endless want.
Cities swallowed not by teeth, but by the simple act of being forgotten.
And underneath it all, a single, ancient emotion that tasted almost like sorrow: the Devourer had never chosen to be alone. It had been shattered because unity was too dangerous. Too complete.
Brother, the marrow whispered directly into his mind now, bypassing ears entirely. The voice was not malevolent. It was vast and patient and empty. We remember the same nothing. Come closer. Let us speak as we once did, before the others tore us apart.
Jidd's knees buckled. He caught himself on a protruding bone ridge, breathing hard. The subtraction-light under his skin flared brighter, crawling up his wrist like living frost. For one dizzying second, he wanted nothing more than to press his palm against the nearest fossil and take. To devour the echo, to pull the missing pieces back into himself, to feel whole for the first time since waking.
He could almost taste it: power without limits. Memories without gaps. An end to the constant, gnawing question of who am I really?
Inkwell's grip tightened painfully. "Jidd. Hey. Kid. Stay with me." The octopus jetted a small cloud of black ink directly into Jidd's face, not enough to blind, just enough to sting and ground him in the present. "Remember the colony? The way the metal tasted when you first woke up? The scream still stuck in your throat? Hold onto that. If you feed here, you lose more than rain. You lose the part that still cares about losing things."
Venn looked up sharply from her work, eyes widening. "He's syncing too fast. The titan is responding to the Key's residue. I need more time to map the fragment boundaries."
She stood, crossing the chamber in quick strides, and grabbed Jidd's glowing wrist without hesitation. Her touch was cool, clinical, but there was a tremor beneath it. "Listen to me. Kaelis didn't build Ossuary Spire just to study fragments. They built it to contain the possibility of reunion. Every indexing chamber like this one is a cage disguised as a laboratory. If the shards start talking to each other, if they remember they were once one being, the containment fails. Realities start subtracting on a planetary scale."
Jidd forced his breathing to steady. The pull receded slightly, but it left a hollow ache behind his ribs. "Then why help me? Why bring us down here at all if it's so dangerous?"
Venn's expression flickered, something raw and personal breaking through her usual guarded mask for just a moment. "Because I've seen what happens when they don't try. I lost someone… to a different fragment. Or maybe the same one, wearing a different face. The titan took pieces of her mind before the Spire could contain it. She forgot her own name in the end. I won't let that happen again. Not if I can carve the Devourer out of you first. Leave you… human. Or close enough that you can choose."
Inkwell let out a low whistle. "Romantic. Tragic. Slightly delusional. I approve."
But Jidd heard the half-truth in her words. Venn wasn't lying exactly, she believed what she was saying. But there was self-interest layered underneath. Perhaps she needed a stable, indexed fragment for her own goals. Revenge. Redemption. Or something colder: a weapon against whatever forces were hunting fragments across the collapsing timelines.
The chamber's light shifted as the indexing lattice fully activated. The green glow spread through the marrow veins, creating a temporary bubble of stability. The heartbeat above them slowed further, becoming almost soothing. For now, the titan seemed content to wait. To listen.
Yet Jidd could still feel it watching. Not with eyes, but with the same vast emptiness that lived inside his own chest on his worst nights.
He pulled his hand free from Venn's grip and looked around the ossuary again. At the erased faces. The missing limbs. The silent warnings carved into bone by long-dead maintenance crews: Do not linger. Do not listen. Do not become.
"How long do we have?" he asked quietly.
Venn checked the node. "Hours, maybe. A day if we're lucky and the upper Spire stays distracted by the initial breach. The enforcers won't risk deep pursuit yet, they know the Depths respond badly to large groups. But the cultists who worship the shards… they might be bolder. And if another bleed starts because of your resonance with the titan…"
She left the rest unsaid.
Inkwell hopped down from Jidd's shoulder, landing with a wet plop on the bone floor. He stretched his remaining tentacles, grumbling about "atrophied suckers" and "need for emergency stimulants." Then he paused, one eye swiveling toward a darker alcove at the far end of the chamber.
"Speaking of bold," he muttered. "We're not alone down here."
Jidd tensed. From the shadows of the alcove came a faint scraping sound, like bone on bone, or claws carefully testing stability. A single subtraction echo flickered into view for half a second: a tooth-lined void no larger than a fist, hovering near the ceiling. It erased a small section of graffiti mid-sentence before vanishing again.
The pull in Jidd's hand returned, sharper this time.
Venn cursed under her breath and adjusted the indexing controls. "It's testing the barrier. Your presence is weakening the local containment. We need to move deeper, there's an older stabilization vault further in. More powerful lattice. But it means getting closer to the titan's core consciousness."
Jidd looked at his glowing hand, then at the fossilized fragment on the wall whose single eye still seemed to plead silently.
He was running out of pieces he could afford to lose.
The heartbeat rolled through the Marrow Depths again, slower but deeper, as if the titan were drawing a long, patient breath.
Soon, it seemed to promise. We will speak properly, little brother. And you will remember why we were shattered in the first place.
Jidd clenched his fist until the subtraction-light dimmed.
Not yet.
Not if he could still choose.