The vent rattled at 1:13 in the morning.
I noticed because mosquitoes had excellent reasons to pay attention when metal moved in the dark.
Predators.
Air changes.
Humans searching for insects with rolled magazines.
This sound was different.
Scrrrk.
Pause.
Tap.
Scrrrk.
I rested on the curtain near Amelia’s desk.
Mayra slept on the opposite side of the room with one arm hanging from her bed.
Amelia sat cross-legged beneath the window, cultivating, frost tracing the glass while her attention turned inward.
The vent rattled again.
Something pushed through.
First came antennae, long and dark.
Then a head.
Cockroach.
Not normal.
A normal cockroach would have been bad enough at my scale.
This one was five or six centimeters long.
Its shell reflected the dim room light like old metal, and one foreleg left a thin scratch in the plastic vent cover as it pulled itself through.
The Codex activated.
— Mutated cockroach detected.
Elevated biological energy present.
Threat level to current host: High — High.
I planned to remain far away.
The cockroach dropped onto Amelia’s desk with a heavy clack.
Mayra shifted but did not wake.
Amelia continued cultivating.
The roach paused, antennae sweeping.
Then it turned toward Amelia.
Of course.
Her aura attracted everything unusual in the building.
The cockroach climbed down the desk and moved toward her.
I watched.
There was no need to intervene.
Amelia could destroy it the moment she noticed.
Probably.
The roach drew closer.
Its shell radiated low-grade energy.
Its mandibles opened.
I felt a sudden, unreasonable surge of irritation.
That was my premium blood source.
No one else was allowed to contaminate her.
This was resource protection, not loyalty.
Important distinction.
I launched.
The cockroach detected me almost immediately.
Its head turned; its antennae tracked the air currents from my wings.
It snapped upward.
Mandibles closed beneath me.
I rose by less than an inch.
The force of the bite moved air across my legs.
One hit would crush me.
Useful information.
I circled and struck the shell with my proboscis.
Tink.
No penetration.
The roach twisted and swung one foreleg.
I moved, but the passing claw spun me sideways.
I recovered against the desk.
Bad approach.
Think.
Joints.
Eyes.
Membranes between plates.
The cockroach turned toward Amelia again.
I dove at a rear leg.
My proboscis found softer tissue near the joint and pierced.
The roach jerked.
I withdrew before the leg struck me.
No venom.
No offensive trait.
Just a mosquito needle and terrible judgment.
The wound was tiny, but it changed the roach’s priorities.
It turned toward me.
Good.
Away from Amelia.
I flew low along the floor.
The roach followed far faster than its size suggested.
I rose beside Mayra’s hanging blanket.
The cockroach climbed after me.
Mayra shifted in her sleep.
The blanket moved.
The roach lost its grip and fell upside down.
Excellent.
Its underside was softer.
I dove and pierced near the abdomen.
Once.
Twice.
The cockroach kicked violently.
One leg struck me hard enough to send pain through my entire body.
I hit the baseboard and fell.
The Codex flashed.
— Minor structural injury detected.
— Wonderful.
The cockroach righted itself and charged.
Then the temperature dropped.
Amelia’s eyes were open.
She looked at the cockroach, then at me, then at the punctures on its underside.
The roach lunged.
Amelia lifted one finger.
A narrow pulse of cold froze the floor ahead of it.
Its legs lost traction, and the creature slid sideways.
I launched despite the pain and dove at one eye.
Pierced.
The cockroach convulsed.
Amelia closed her hand.
Frost spread over the creature in a controlled layer.
Its legs slowed, locked, and stopped.
Dead.
Silence returned.
Mayra slept through everything.
Impressive.
Amelia looked at me.
I hovered near the frozen corpse.
She raised one eyebrow.
I landed on it before she could object.
Sample first.
Explanations never.
The Codex scanned.
— Mutated cockroach biological material available.
Compatible adaptations detected: 1.
Reinforced Exoskeleton I Enhanced chitin density and impact resistance.
Compatibility: High Cost: 2 Evolution Energy 2.
Disease Resistance I Improved resistance to common pathogens and contaminated environments.
Compatibility: Moderate Cost: 2 Evolution Energy 3.
Scavenger Digestion I Expanded ability to process degraded biological matter.
Compatibility: Moderate Cost: 1 Evolution Energy — Three options.
Could I take all of them?
— Current host architecture cannot safely integrate all available adaptations.
Recommendation: Select one.
— There.
Evolution was not collecting everything.
Disease resistance and scavenger digestion would both help later.
Right now, indirect impacts had nearly killed me twice.
Reinforced Exoskeleton.
I selected it.
— Evolution Energy cost: 2 Integration initiated.
— Pressure moved across my shell.
Chitin thickened microscopically, concentrating around the thorax, wing roots, and major joints.
My color darkened by a shade.
The process lasted less than a minute.
— REINFORCED EXOSKELETON I acquired.
Effects: – Increased resistance to minor impact – Improved structural durability – Reduced risk from indirect blunt force Tradeoff: – Slightly increased mass – Slightly increased flight expenditure — A real tradeoff.
Good.
I lifted into the air.
Heavier.
Barely, but enough that my wings had to compensate.
Amelia watched every movement.
“You changed,” she whispered.
No.
Ordinary mosquito.
Nothing strange.
I flew toward the curtain.
A tiny wall of cold appeared in my path.
I stopped.
Amelia looked at the dead cockroach, then back at me.
“You fought it.” I turned left.
The wall shifted.
“You sampled it.” I turned right.
Blocked again.
“And then your shell changed.” I hovered in silence.
Amelia’s eyes narrowed.
Then she moved the wall aside.
“Go.” I went immediately.
No need to challenge permission when it aligned with my goals.
From the curtain, I watched her examine the frozen roach.
Mayra finally woke.
“What happened?” Amelia looked at the corpse, then toward my hiding place.
“Pest problem.” Mayra sat up, saw the roach, and screamed.
I remained hidden while chaos began.
Beneath the noise, the Codex showed my status.
— Name: Plenteaful Species: Mosquito Evolutionary Stage: Ordinary Mosquito Evolution Energy: 0.82 Traits: – Frost Resistance I – Reinforced Exoskeleton I — Two traits.
Still mosquito.
Good.
And Amelia knew with increasing certainty that I was not ordinary.
Less good.