[University Science Building, Basement Storage Level, Day 3 Post-Skyfall, Morning]
The roots didn't come up slow.
They came up the way a fist comes up, fast and committed, punching through the epoxy resin floor in sprays of grey dust and shattered concrete, five of them in the first second, each as thick as Ren's forearm and ending in a tapered point that had hardened to something denser than wood. The green light pulsing through the vein-network of the tree's root system lit the whole basement floor from below, every crack and gap in the concrete glowing, and the sweet-rot smell hit his sinuses like a fist.
Rotting gardenias. Overripe fruit. Something underneath both of those that was not a plant smell at all.
Ren was already moving before the first root crested the surface.
The Tremor Sense had felt them coming three seconds before they broke through. Pressure differentials moving through the resin floor, the roots pushing upward through substrate and stone, telegraphing their trajectories the way footsteps telegraph weight. He felt the next cluster coming from the left before they surfaced and stepped right, the points driving through the space his left leg had just vacated, cracking against the bottom of an old equipment shelf hard enough to tip it.
The tree screamed.
All twelve heads, mouths open at different widths, different pitches, layered over each other into a sound that was somehow worse than any single voice, the way a chord played wrong is worse than one wrong note. Their eyes were open and moving independently, tracking him across the basement floor, and the bark around their necks had fused upward to their jawlines, grey-brown wood swallowing the lower halves of their faces from the outside.
'Not people anymore,' he thought. 'Barely people-shaped.'
'Intruder intruder intruder—warning warning, protect, ALERT, the branches need—' A fragmented loop, no single thought completing, twelve partial minds running the same alarm in parallel.
Ren swung the fire axe.
The blade was sharp and weighted for structural work and his Strength stat was not what it had been in the closet with the bread knife. The axe head went through the nearest root like it was balsa wood, clean through, and the severed end sprayed green-lit fluid that smelled like sap and copper mixed, hitting the floor and sizzling faintly against the epoxy resin.
The tree screamed harder.
Six more roots came up simultaneously, radial pattern, centered on his position, and he caught the vibration a half-second before they surfaced.
"Chloe!" he shouted. "The ammonia!"
She was against the back wall, both hands pressed over her nose and mouth, but she was still functional. She had the bag open. He heard the clatter of bottles.
He didn't have time to look. Two roots came up inside his guard, too close together to swing around, and he dropped the axe handle horizontal and caught both of them on the shaft, the impact travelling up his arms into his shoulders, his feet skidding six inches backward on the smooth floor before his Strength checked against the pressure and held.
The root tips drove against the wooden handle. It started to crack.
He shoved back, redirected, and the roots stabbed through open air on either side of him and buried themselves in the wall behind.
He grabbed one of them.
Wrapped both hands around the root-stem and pulled with his Strength stat fully engaged, the muscles in his arms and back loading up hard, and the root tore out of the wall with a sound like a green branch and a spray of chalky mortar dust. He used the momentum, full rotation, and swung it like a rope into the cluster of roots trying to surface near the chest at the tree's base, scattering them before they reached full extension.
The chest was ten meters away.
Eagle Eye resolved the lock on it with perfect clarity from across the basement. Old padlock, corroded brass, the shackle partially eaten through by the roots that had grown up and around it over the past three days, metal and organic tissue fused at the contact points. The glowing coming from the chest's seam was stronger up close, bleeding through the corroded metal, a deep amber-gold that the green light of the tree couldn't overpower.
The hunger recognised it from twenty feet.
Not the Eat voice that had started in the closet. Something older. Something underneath the skill, underneath the level, underneath all the accumulated biology he had been absorbing since the rat. A pull, low and certain, oriented at that chest the way a compass needle orients north.
'There,' whatever lived at the bottom of the Gluttony skill said. 'That.'
"Now!" he shouted.
Chloe threw the ammonia bottle.
Her aim was terrible and her throw was weak and the bottle still hit the tree's central trunk because the trunk was the size of a refrigerator and occupied a significant portion of the basement's center. The glass broke and the ammonia soaked the bark in a wide splash, and she had the bleach open before the first chemical hit, throwing that one too with both hands.
The reaction was not mustard gas because the ratio was wrong and the space was not enclosed enough to concentrate it, but the reaction was real and immediate, the bark where the two chemicals met going white and then black, the tree recoiling in a way that trees had no architecture for recoiling, the whole structure pulling inward and upward simultaneously, the roots withdrawing from the floor in rapid sequence with a sound like a dozen corks pulled at once.
The heads all screamed a single unified note.
'BURNING burning BURNING get it off get it off the bark is wrong ALERT the roots must—'
Ren ran.
Straight at the tree's base, axe low, and a branch came down with a head on it, eyes locked on him, the head snapping its teeth at jaw-level. He ducked under it and drove the axe into the root-cluster at the trunk's base, two hard chops, severing the thickest root and breaking the grip it had on the chest's left side, and the chest dropped six inches and hung crooked.
The padlock had been partially eaten through.
He hit it with the flat of the axe head.
The shackle broke.
He yanked the lid open.
Inside, on a bed of bark fibers and dried green fluid, was a seed.
It was the size of a large egg and the colour of raw amber, irregular-faceted like something that had crystallised naturally, and it gave off light the way something gives off heat, a gradual ambient radiation rather than a point source. Through its surface, at different depths, shapes moved in slow rotation. No anatomy he recognized. Just density, and movement, and the system floating one small tag over it.
[Primal Mutation Seed - System Origin]
[Unclassified. Consume at your own discretion.]
The last two words sat in the blue text with a serenity that would have given him pause on day one.
A root drove through the side of the chest and punched through the back of his left hand.
The pain was clean and deep, a spike through the palm, and his hand opened involuntarily, the seed dropping back into the chest. He grabbed it with his right hand instead and ripped his left off the root in one motion, tearing the entry wound wider, blood dark and immediate across his fingers.
He put the seed in his mouth.
It did not taste like anything biological. It tasted the way the ozone-smell of lightning looked, electric and sharp and deep-mineral, dissolving against his tongue with a warmth that built slowly rather than hitting all at once.
He swallowed.
The tree screamed for three full seconds at a frequency that made the equipment shelving rattle.
[Gluttony Activated.]
[Consumed: Primal Mutation Seed - System Origin.]
[SYSTEM RECOGNITION EVENT.]
[Analyzing consumption profile...]
[Rat. Student. Python. Void Parasite. Crow. Spider. Primal Seed.]
[Profile classification: Apex Convergence.]
[New Title Unlocked: Devourer.]
[Effect: All future Gluttony gains increased by 30%. Consumed entities' highest passive skill flagged for potential extraction.]
[New Active Skill: Assimilate.]
[Description: Once per day, fully consume a target to extract its dominant genetic trait. Trait quality scales with target level.]
[Health fully restored.]
[Stamina fully restored.]
The hand healed.
Not the way the rat bite had healed, gradual and visible. This was total, all at once, the puncture wound closing from the inside outward, the blood drying and flaking away, the skin underneath intact and clean.
The warmth from the seed had reached his sternum and was spreading outward.
He felt the tree above him.
The roots, through the Tremor Sense, were withdrawing fully now, pulling back toward the trunk in a mass retreat, the ammonia-bleach reaction still working through the bark in spreading white-black patches. The heads had gone quiet, twelve mouths closed, twelve sets of eyes oriented downward toward him with an expression that had crossed from alarm into something he had not expected to read on the face of a flesh tree.
Something cautious.
'You ate the seed,' the thing's collective behavior suggested, twelve faces in convergence. 'You ate the seed and the system made a sound it hasn't made before and now you're standing at our base with an axe.'
Ren looked up at the tree.
[Mutated Flesh Tree (Lvl 7)]
The question marks were gone.
He looked at the roots. He looked at the twelve sleeping-faced heads in the branches, their eyes open now and tracking him from above. He looked at the trunk, the ammonia damage moving through it in slow chemical progression.
The hunger assessed the tree the way it assessed every other entity he had encountered since the closet.
Then the [Assimilate] skill offered a different option for the first time.
He ran the calculation.
A Level 7 entity. One use per day. The Pheromone production alone, extracted, would give him a biological crowd control he didn't currently have. The root-sense the tree ran, the way it had processed his location through substrate vibration, was a variant of his Tremor Sense but wider in range.
The tree shuddered. Roots tightened against the concrete, bracing.
He walked to the base of the trunk, axe in his right hand, and pressed his left palm flat against the bark.
The [Assimilate] skill activated.
The tree went rigid.
The basement was quiet for ten full seconds except for the distant BOOM of the Crusher beating on the steel door two floors up, and the soft hum of the cryogenic units in the sublevel corridor, and Chloe's breathing somewhere behind him, fast and shallow.
[Assimilate Complete.]
[Dominant Trait Extracted: Rootsense.]
[New Passive: Rootsense.]
[Description: Extends Tremor Sense range to 200 meters. Can map structural layouts through ground contact.]
The tree collapsed inward.
Not dramatically, not with another scream. It simply stopped being able to hold its own weight, the structural integrity leaving it the way air leaves a punctured tire, slow and total, and the trunk folded down against the basement floor in sections, the roots retracting and going still, the heads closing their eyes one by one as the light in the vein-network dimmed from green to grey and went out.
The sweet-rot smell dissipated.
What was left smelled like wet wood and ammonia and the concrete dust from the broken floor.
Ren stood in the dark.
His Rootsense opened.
It was nothing like the Tremor Sense. The Tremor Sense read the immediate building, individual footfalls and weight events within fifty meters. The Rootsense read two hundred meters in every direction as a continuous three-dimensional map, vibration and density and structural cavity, and it hit him all at once like having a second brain switch on in a register he had never used before.
He felt the Crusher pacing in the lobby above, BOOM BOOM, pattern regular and agitated.
He felt the six neutralized mutants in the basement corridor, cooling.
He felt Dr. Yuen in the sublevel, standing, her pulse a deep violet frequency that Rootsense read differently from heat or tremor, a resonance rather than a vibration.
He felt the city past the building's walls, chaos distilled into seismic data, thousands of moving masses and falling structures and fires eating through concrete and steel.
And three blocks north, wrapped around the central tower: a signature so large and so hot that the Rootsense registered it less as a living entity and more as a geological event.
Ren exhaled.
"You ate a tree," Chloe said, from behind him.
He turned.
She was standing at the back wall, both hands dropped from her face, staring at the collapsed remains of the flesh tree and then at him. Her brown eyes had that flat careful quality again, the post-ceiling-spider, post-snake, post-everything expression that was becoming her resting face.
'He put his hand on the bark and it died. The whole tree. It just stopped. And he looks the same as he did ten seconds ago, which is somehow the most unsettling part of all of this.'
"I assimilated it," Ren said.
"You—" She stopped. Tried again. "Is that different from eating it?"
"Less chewing."
He picks up the fire axe from the floor and turns to face the stairs that lead back up toward the pressure door and the sublevel beyond it, where Dr. Yuen is still standing with her violet-vein hands and her question-mark level and her information about the tower, and he starts walking.