— 'The most successful parasite is not the one that feeds unseen, but the one mistaken for a necessary organ.'
---
Morning arrived long before the city appeared willing to acknowledge it. The STAE laboratory existed in a perpetual twilight of fluorescent white, where dawn and midnight dissolved into one another beneath the antiseptic glow of suspended panels. Outside, the streets were still damp from overnight rain. Thin streams of water clung to the windows, distorting the distant silhouettes of apartment blocks into soft, melting geometry. Inside, nothing moved except machinery. The centrifuges exhaled in measured intervals. Incubators blinked green.
Somewhere behind a sealed door, refrigeration compressors hummed with almost organic patience.
Lucian preferred this hour.
The building belonged to people who understood silence. He placed a clipboard beside one of the animal enclosures before lifting the transparent lid. White laboratory rats stirred beneath the bedding. Some emerged cautiously, whiskers trembling. Others remained motionless.
Too motionless.
He watched them for several seconds before writing three numbers onto the sheet.
"Twenty-one."
A pause.
"Twenty-four."
Another pause.
"Twenty-nine."
Dead.
He closed the lid again without expression.
Death itself interested him remarkably little.
It was failure that demanded attention.
---
Kael arrived precisely six minutes later, carrying two notebooks under one arm and a paper cup of coffee already growing cold in the autumn air.
His hair looked as though he had forgotten it existed. Light oak strands escaped in every direction, flattened only where the hood of his coat had pressed against them during the walk from the station. Dark crescents lingered beneath his pale yellow eyes.
Lucian noticed immediately.
"You slept."
"Barely."
"You should've slept more."
"I was reading."
"You've been saying that every morning this week."
Kael simply shrugged, placing his bag onto the workbench before opening yesterday's observations.
Rows upon rows of figures covered the pages.
Body mass.
Respiration.
Reaction latency.
Temperature.
Mortality.
Mortality.
Mortality.
His pencil lingered over the final column.
"I don't understand."
Lucian continued preparing a microscope slide.
"Understand what?"
"The pattern."
"There isn't one."
"There has to be."
Kael pulled another notebook closer.
"The concentrations are identical."
"The carrier cultures are identical."
"The environment is identical."
He flipped through several pages.
"Yet one dies within twelve hours."
"Another survives six days."
"A third develops neurological symptoms."
"A fourth simply..." He frowned. "...stops."
Silence settled between them.
Not uncomfortable.
Merely occupied.
Lucian adjusted the microscope's focus.
"Likely genetics. The objective remains fulfilled."
Kael looked up.
"The objective?"
"They die."
Kael stared at him for several moments.
"No."
Lucian finally met his eyes.
"No?"
"The objective," Kael replied carefully, "is understanding why."
Their gazes remained locked. Lucian's curious gaze widened.
"If we figure out how to biologically snipe specific individuals through hyper specific DNA, our little eugenics feat will become much more fascinating."
Kael's expression didn't shift, but internally his resolve flickered.
"We could use this."
A single nod.
"We could."
Lucian eventually smiled.
Only faintly.
"You're becoming ambitious."
"I'm becoming irritated."
"Good."
Lucian returned to the microscope.
"Irritation precedes discovery."
---
The remaining rats were quieter than usual.
Kael approached the nearest enclosure, crouching until he was level with the glass.
One animal sat alone beneath the water dispenser.
Its breathing appeared normal.
Its pupils reacted normally.
Its movement remained coordinated.
Perfectly healthy.
According to every measurable parameter.
Yet something about it unsettled him.
The animal simply...
waited.
Not frightened.
Not resting.
Waiting.
Almost as though some invisible process had already begun.
He wrote another note.
"Behavioural latency preceding physiological decline?"
A question mark followed.
Then another.
He disliked uncertainty.
Numbers rarely lied.
Living organisms often did.
---
"You've become attached."
Lucian's voice interrupted his thoughts.
Kael blinked.
"To the rats?"
"They occupy your mind more than the data."
"They're variables."
"They're corpses."
"They're becoming corpses too quickly."
Lucian leaned casually against the workbench.
"And?"
"And we learn less."
Another pause.
Then Lucian laughed.
Not mockingly.
Almost approvingly.
"You know what I find interesting?"
Kael waited.
"You never object to what we're doing."
"No."
"You only object when it lacks elegance."
Kael considered the statement.
Eventually—
"Yes."
There was no shame in admitting it.
No defensiveness.
Simply fact.
Lucian watched him with quiet fascination.
Perhaps this had always been the difference between them.
Lucian sought transformation.
Kael sought understanding.
The destination happened to coincide.
For now.
---
By the time they left for college, rain had begun again.
It fell lightly, almost politely, misting the pavements rather than striking them. Students drifted through the campus carrying umbrellas like brightly coloured fungal caps emerging after damp weather.
Lucian observed them through the train window.
"They're predictable."
Kael looked up from his notebook.
"They're late."
"They're hungry."
"They're tired."
"They'll complain about assignments."
"They'll postpone revision."
"They'll wonder why their lives remain unchanged."
He watched a crowd gather at a crossing.
"They call it individuality."
"I call it synchronized behaviour."
Kael followed his gaze.
"How come they still think they're different?"
Lucian quipped back, almost instinctively:
"Lived experience often variates from what we can only see statistically."
---
Across the city, Taisia unlocked the front door.
Warmth met her immediately.
Fresh bread, coffee, laundry detergent.
Someone had opened the kitchen window just enough for cool autumn air to mingle with breakfast.
It smelled like home.
"You're back!"
Her younger sister appeared almost instantly, abandoning a half-finished drawing across the dining table before wrapping both arms around Taisia.
"I missed you."
Taisia smiled, smoothing the girl's hair.
"I was only gone yesterday."
"That's still yesterday."
Their mother looked up from the stove.
"There you are."
The words carried effortless affection.
"I kept breakfast warm."
Taisia removed her shoes neatly beside the door.
"You didn't have to."
"Nonsense."
Her father lowered the morning newspaper.
"Busy at the laboratory?"
"Very."
"And college?"
"Good."
"Still first in practical assessments?"
She nodded.
"Proud of you."
Simple words.
Ordinary words.
She had heard them all her life.
---
Breakfast unfolded with familiar precision.
Her mother insisted she eat more.
Her father asked about future internships.
Her sister talked endlessly about school.
Everything possessed the gentle rhythm of routine.
Safe.
Predictable.
Comforting.
Taisia often thought how fortunate she was.
Many of her classmates complained about parents who argued.
Parents who ignored them.
Parents who drank.
Her family did none of those things.
They simply expected excellence.
And because they believed in her—
she tried harder.
That seemed fair.
---
"Taisia?"
Her mother's voice interrupted.
"Would you mind transferring a little money?"
She looked up.
"Of course."
"Your father needs to sort something out."
"It'll come back next week."
"As always."
Taisia reached automatically for her phone.
She never asked how much.
Never asked why.
Her father already knew the banking password.
He always had.
It was easier that way.
He was better with finances.
She had always believed that.
Her sister leaned over excitedly.
"And afterwards can we go shopping?"
"For what?"
"A new construction set."
"You've already got one."
"This one's different."
Their mother laughed softly.
"She's been talking about it all week."
Taisia smiled apologetically.
"I can't today."
The sentence emerged almost absentmindedly.
She barely noticed saying it.
"I've got reports to finish."
Silence.
Tiny.
Almost imperceptible.
Her sister's expression changed first.
"Oh."
The disappointment was immediate.
Then confusion.
"But you always have time."
"I don't today."
Another silence.
This one longer.
Her mother resumed stirring tea.
Her father folded the newspaper with deliberate care.
"You've become very busy."
"I have."
"We all make sacrifices."
"I know."
"You wouldn't have opportunities like yours without family."
"I know."
Each sentence sounded reasonable.
Each carried no visible accusation.
Yet something shifted beneath them, the first pheromone released through an anthill before the workers realised danger had entered.
---
Her sister spoke again.
"Can I borrow your card instead?"
"No."
Not sharply.
Simply—
"No."
The little girl's face crumpled.
"But-"
"No."
"I'll pay you back."
"You don't have any money."
"I'll ask Mum."
"Then why not use her card instead? I said no."
Her sister stared.
As though the word itself were unfamiliar.
She ran from the room.
"Mum!"
The house remained astonishingly quiet.
No shouting.
No raised voices.
Only muffled conversation somewhere beyond the kitchen wall.
Taisia looked down into her untouched tea.
It had suddenly become difficult to swallow.
Why?
She wasn't sure.
She had merely said no.
---
Her mother returned first.
"You upset her."
"I didn't mean to."
"I know."
The smile remained.
Gentle.
Patient.
"She's only little."
"I know."
"It would've made her happy."
"I..."
Taisia hesitated.
"I need the money."
"For?"
"Living."
Her father stood.
"You've never spoken like that before."
"I only meant-"
"You've changed."
Three words.
Calmly delivered.
Far heavier than anger.
"I haven't."
"No?"
"No."
"You've become selfish."
"I don't think I have."
"You don't think?"
His voice remained almost conversational.
"I thought we taught you better."
Something tightened inside her chest.
"I only said no once."
"And that's exactly the problem."
The slap came so suddenly it almost failed to register.
There was no warning.
No shouting beforehand.
No dramatic escalation.
Only the sharp sound of skin meeting skin.
Then silence.
Her head turned instinctively with the force.
For several seconds she simply stood there.
Breathing.
The kitchen looked exactly the same.
Morning sunlight still lay across the tablecloth.
The kettle still hissed quietly.
The smell of warm bread remained unchanged.
Everything continued.
Except something fundamental no longer fit inside the picture.
Her father lowered his hand.
His expression hadn't altered.
"If you're going to live under this roof," he said evenly, "don't make ordinary things difficult."
He turned away.
As though the conversation had ended.
As though nothing extraordinary had happened at all.
Taisia remained where she was.
Her cheek stung.
Not intensely.
Merely enough to remind her that reality had shifted without asking permission.
She touched her face.
Slowly.
Almost experimentally.
"...They've never hit me before." — the thought appeared with startling clarity.
Then another.
"No- They've never needed to."
And suddenly memories, once polished smooth by habit, began to catch on invisible edges.
Her parents always told her to work harder because they believed in her.
They had always chosen her subjects.
Always encouraged the "right" friends.
Always managed her savings because she was "too trusting."
Always borrowed from her account.
Always reminded her how fortunate she was.
Always knew what was best.
Always smiled.
Always decided.
Always expected agreement.
She had never noticed how little space remained for refusal.
The slap had not begun the violence.
It had merely made it visible.
She stood in the middle of the immaculate kitchen, surrounded by warmth, fresh bread, polished countertops and family photographs.
For the first time in seventeen years...the house no longer felt like a home.
It felt like a beautifully maintained enclosure.
---
The laboratory was never truly dark.
Even before dawn, before the corridors beyond its reinforced doors had begun to fill with footsteps and conversations, a thin constellation of indicator lights shimmered beneath the stainless steel benches. Refrigerators hummed with patient indifference. Incubators breathed in measured cycles. Somewhere beyond the specimen room, a centrifuge completed its nightly programme with a soft electronic chime before lapsing once more into silence.
The building itself seemed to exist outside ordinary time.
Lucian preferred it that way.
He arrived every morning at precisely six, as he always did, letting himself through the staff entrance with the practised rhythm of routine. Security recognised him by now. A nod from the night porter, the brief metallic click of the access door, the lift descending without conversation. His mornings belonged to preparation long before lectures claimed the rest of the day: recording overnight observations, collecting fresh cultures, calibrating equipment before the senior researchers arrived.
Order before noise.
It was only when he entered the main laboratory that something interrupted that order.
Someone was asleep.
Not sprawled carelessly, nor curled dramatically beneath a bench, but sitting against the wall beside the lockers, knees drawn loosely towards her chest. A folded laboratory coat had become a pillow. Her shoes were still neatly aligned beside her. Her bag rested beneath one arm as though, even in exhaustion, she had been unwilling to let it leave her possession.
Taisia.
Lucian stopped.
Only for a second.
His expression altered so little that another observer might have mistaken it for simple recognition, yet his mind had already moved several steps ahead.
She had not gone home.
Interesting.
He looked briefly at the untouched access logs on the terminal. Her identification card had entered the building shortly after midnight.
There had been no exit.
His gaze returned to her.
There were faint bruises darkening the inside of one wrist. A shallow abrasion crossed her knuckles. Beneath the fluorescent lighting, the usual composure of her face had dissolved into something unexpectedly young. She looked less like the immaculately self-possessed student who corrected lecturers with polite confidence and more like someone who had simply run out of places to stand.
Lucian quietly set his satchel on the nearest bench.
He did not wake her.
Instead he moved through his routine exactly as he always did.
He prepared fresh media.
Recorded overnight temperatures.
Adjusted the incubator settings.
Started the coffee machine in the adjoining office.
The ordinary rhythm of his work gradually filled the room with familiar sounds—the measured scrape of glass against metal, the soft hiss of boiling water, pages turning beneath his pen.
It took almost twenty minutes before Taisia stirred.
She blinked slowly, confusion crossing her face before memory returned with brutal efficiency.
Her eyes found Lucian immediately.
"...How long have you been here?"
"Twenty-three minutes."
She looked down at herself, suddenly aware of where she had spent the night.
"I apologise."
"What for?"
"I shouldn't have—"
"You selected the warmest room in the building with unrestricted access and functioning security cameras."
He continued writing without looking up.
"It was statistically the correct decision."
For reasons she could not quite understand, those words almost made her cry.
Not because they were comforting.
Because they weren't.
There was no sympathy hidden beneath them, no carefully chosen reassurance. They were simply... permission. He had looked at the situation exactly as she had wished someone else might: not as a moral failing, nor as weakness, but as a problem requiring the least harmful solution.
He poured coffee into two mugs.
Without asking whether she wanted one, he placed the second beside her.
"It will be cold in eight minutes."
She accepted it in silence.
The warmth seeped slowly through her fingers.
For several minutes neither of them spoke.
Outside, dawn began staining the laboratory windows with a pale blue light.
Eventually Taisia broke the silence.
"...May I ask you something?"
Lucian nodded once.
"What do you actually want?"
It was such a simple question.
No philosophy.
No debate.
No classroom audience.
Just curiosity.
He considered it surprisingly carefully.
"I want humanity to become worthy of existing."
She waited.
Nothing else came.
No grand speech.
No dramatic declaration.
Only that sentence, spoken with complete certainty.
Taisia lowered her eyes into her coffee.
She had expected ambition.
Perhaps wealth.
Influence.
Recognition.
Instead she heard something almost noble.
"You think people can improve?"
"I think they must."
"And if they don't?"
Lucian watched the first rays of sunlight catch the edge of a microscope.
"Then the future belongs to those who will."
It sounded hopeful.
Almost inspirational.
She smiled faintly despite herself.
"You really believe that."
"I do."
Again-
It was not a lie.
Only an absence.
He never mentioned how improvement would be measured.
Or who would decide.
Or what became of those who failed.
Taisia supplied those assumptions herself.
Lucian simply allowed the misunderstanding to remain undisturbed.
She did not tell him everything.
Only enough.
"My parents asked me to leave."
Lucian looked up.
"They've never... exactly liked boundaries."
"I see."
"I don't really have anywhere else."
"You do now."
She frowned.
"What?"
Lucian had already taken out his phone.
His first call lasted barely forty seconds.
The second, slightly longer.
By the third, people had begun using names instead of explanations.
"Good morning, Mr. Ainsworth."
"...Yes, he's available."
"Certainly."
"Of course we'll arrange that immediately."
Taisia sat perfectly still.
She had assumed he was making enquiries.
Perhaps looking for temporary accommodation.
Instead she watched an invisible machine begin moving.
Not hurriedly.
Effortlessly.
He spoke with the detached precision he used when organising laboratory schedules.
One address replaced another.
One signature replaced another.
Someone promised furniture by midday.
Another confirmed utilities.
Someone else apologised that internet installation might take until tomorrow evening before immediately correcting themselves after hearing Lucian's surname.
"No," Lucian said calmly.
"Today."
A pause.
"Thank you."
He ended the final call.
"Done."
She stared.
"...Done?"
"My father's company owns several investment properties."
He returned the phone to his pocket.
"One was vacant."
"I... Lucian, I don't have-"
"You have identification."
"That's not what I-"
"You'll receive temporary occupancy until the paperwork is processed."
He spoke exactly as though discussing laboratory inventory.
"There is food already scheduled for delivery."
"I can't possibly—"
"You can."
She laughed once.
It was a fractured, disbelieving sound.
"You've just... solved everything."
"No."
He corrected her gently.
"I removed the immediate obstacles."
The distinction seemed important to him.
To her...
It changed something fundamental.
Nobody had ever solved problems around her before.
They had explained them.
Minimised them.
Turned them into lessons.
Into responsibilities.
Into proof she should simply try harder.
Lucian had not comforted her.
He had simply altered reality until the problem ceased to exist.
She felt absurdly lightheaded.
"...Why?"
He looked genuinely puzzled.
"Because unresolved variables interfere with productivity."
Then, after a brief pause—
"And because you are useful."
She expected those words to hurt.
Instead they felt strangely honest.
Useful.
Not loved.
Not pitied.
Not obligated.
Useful.
There was dignity in usefulness.
Far more, she thought bitterly, than there had ever been in being endlessly accommodating.
---
Kael noticed the difference before she spoke a word.
By the time lectures ended, she had arrived wearing the same immaculate clothes, the same measured posture, the same carefully arranged hair.
Only the spaces between those things had changed.
She was quieter.
Not outwardly.
Internally.
Like a building whose foundations had shifted without disturbing the walls.
They worked together throughout the afternoon cataloguing specimen slides.
The silence between them remained comfortable until, quite suddenly, Taisia stopped writing.
"...May I ask you something?"
Kael looked up.
"Yes."
"If someone... stopped belonging somewhere..."
He waited.
"...how would they know?"
He thought for several seconds.
"I don't understand the question."
"I know."
She smiled weakly.
"I was hoping you would anyway."
Another pause.
"I left home."
Kael blinked once.
"Oh."
That was all.
Not indifference.
Processing.
He quietly set his pen down.
"...Should I say I'm sorry?"
"I don't know."
"I've never done this before."
She almost laughed.
"Done what?"
"...Comfort someone."
The admission arrived with such complete sincerity that it dissolved the last of her composure.
Not because it was eloquent.
Because he hadn't pretended.
Everyone else always seemed to know exactly what to say.
Kael simply admitted he didn't.
He studied her face with the same concentration he devoted to laboratory anomalies.
Eventually he asked,
"So..."
"What response would be useful?"
The corners of her mouth trembled.
"I don't know."
He nodded.
"Neither do I."
For a surprising length of time, that answer was enough.
When she finally began speaking, the words emerged without structure.
Fragments.
Childhood memories.
Bank accounts.
Expectations.
Apologies.
The slap.
The silence afterwards.
She spoke as though assembling evidence rather than telling a story.
Kael interrupted only once.
"When you said no..."
"Yes?"
"...Had you ever said no before?"
She stopped.
Her expression altered.
"I..."
"No."
He nodded slowly.
"Then they weren't responding to one decision."
His voice remained calm.
"They were responding to the first interruption in a pattern."
She stared at him.
That simple observation rearranged years of memory.
The birthdays.
The gifts she had bought.
The passwords.
The borrowed savings.
The expectation she would always understand.
Always compromise.
Always yield.
Not isolated events.
One continuous system.
"I thought..."
She whispered.
"I thought they trusted me."
"They depended on you."
"They loved me."
"They may have."
He considered the wording carefully.
"The two aren't mutually exclusive."
No condemnation.
No defence.
Only precision.
Strangely...
Precision hurt less than sympathy.
---
She hesitated for a long time before speaking again.
"I almost..."
Her fingers tightened around each other.
"...did something stupid."
Kael remained silent.
"I kept thinking that maybe if I was hurt enough..."
She couldn't finish.
He looked at her thoughtfully.
Finally he said,
"If the objective was to reduce psychological distress..."
She frowned.
"...then damaging yourself wouldn't improve the underlying variables."
She laughed through tears.
"You really are terrible at this."
"I know."
"I appreciate that you're trying."
"I am."
Another pause.
"If surviving today is your objective..."
He chose each word with visible care.
"...then preserving the only body capable of surviving seems statistically preferable."
Silence settled between them.
Not empty.
Gentle.
Different from the silence that usually surrounded Kael.
Taisia realised, with quiet astonishment, that he was trying harder than anyone she had ever met.
Not because empathy came naturally.
Precisely because it didn't.
Every sentence was deliberate.
Every question chosen.
Every response constructed from first principles because instinct offered him nothing.
There was something profoundly moving about effort.
Perhaps more than effortless kindness had ever been.
---
That evening the three of them left STAE together beneath a sky already surrendering to dusk.
None of them spoke for several minutes.
The city moved around them in ordinary rhythms—commuters hurrying home, buses sighing to a halt, traffic lights changing with mechanical patience.
For everyone else, it was simply another weekday.
For the three walking side by side, something irreversible had shifted.
Lucian glanced briefly towards Taisia.
"You'll collect the keys tomorrow morning."
She nodded.
"...Thank you."
He inclined his head once.
Nothing more.
Kael walked quietly between them, hands buried in his coat pockets.
He found himself looking first at Lucian.
Then at Taisia.
Then back again.
It occurred to him that both of them had spent years believing themselves to be parasites surviving inside hostile colonies.
Neither had noticed how many organisms had already been feeding on them.
The thought lingered all the way to the station.
For the first time since they had met, Kael wondered whether insects were always the creatures consuming the colony-
or whether sometimes the colony itself quietly consumed everything living inside it, until someone finally learned to leave.