Chapter Text
The flatline did not belong in a house that quiet.
Four days after the end of the world, the Umbrella Academy had settled into something that almost resembled order. Not peace—never peace—but containment. Damage catalogued. Crises assigned. Suffering sorted into rooms.
Upstairs, Allison lay in enforced stillness, her throat wrapped in gauze, her voice taken from her. Sedated enough to keep her from tearing at the bandages. Awake just enough, sometimes, to understand what she had lost.
Down the hall, Vanya was kept under completely. No chances. No risks. No vibrations in the walls. Her door stayed closed. Her breathing, monitored. Her existence, carefully muted for now.
Two catastrophes.
Visible. Measurable. Managed.
The third was not supposed to be a problem.
The third had been walking around the kitchen that morning, shaking and sweating and talking too much.
The third was on the table.
---
The infirmary lights were too bright.
They always had been—clinical, unforgiving, the kind of light that erased shadows and left everything exposed. There was nowhere for anything to hide under that kind of brightness. No illusion. No softness.
Klaus lay under it like something already halfway archived.
His skin had the wrong color.
That was the first thing Five registered, even before the machines, before Grace, before the sound. Not pale—Klaus did pale often, theatrically, dramatically—but grey. A dull, ashen tone creeping under the fever-flush, like something inside him had started shutting down piece by piece and hadn’t bothered to inform the rest of his body yet.
There was dried blood at his collar.
More at his ribs.
And the pen.
God, the pen.
A cheap blue Bic, snapped and hollowed, jammed between ribs at an angle that no human body should ever have to accommodate. Ink smeared across skin. Across Five’s hands. Across the table. A child’s object repurposed into something brutal and desperate and horribly effective.
It looked like a mistake.
It looked like a confession.
Grace’s hands were already moving.
Of course they were.
Grace did not hesitate. Grace did not panic. Grace did not have the luxury of regret. She simply responded to input, adjusted variables, applied solutions.
“Heart rate dropping,” she said, bright as a lullaby.
Five didn’t remember crossing the room.
One second he was at the door, taking in the scene as a whole—the geometry of disaster, the arrangement of bodies, the wrongness of the air—and the next he was at Klaus’s head, already grabbing for the Ambu bag before the instruction was even given.
“Move.”
Luther was too close. He always was in moments like this—large, immovable, trying to be useful by proximity alone.
“Move,” Five said again, sharper.
Luther stumbled back, knocking into a tray. Metal instruments clattered to the floor in a useless cascade. He didn’t notice. He couldn’t take his eyes off Klaus.
Diego stood at the foot of the table.
Still.
Too still.
There was blood on his sleeve—dried now, darkened to something almost black. His hand was half-curled, like it hadn’t quite decided whether it was meant to strike again or hold something together. His eyes were fixed on Klaus with a kind of rigid focus that wasn’t calm and wasn’t control—it was calculation breaking down under something it didn’t know how to process.
“Diego,” Five snapped.
Diego blinked once.
Stepped back.
Not far. Never far enough. But enough.
Five sealed the mask over Klaus’s face and squeezed.
The body beneath his hands gave too easily.
Wrong.
That was wrong.
Klaus always resisted. Even unconscious, even high, even half-dead, there was always some stubborn tension left in him. Some refusal to cooperate with reality. Some insistence on making even dying a little bit inconvenient for everyone involved.
Now—
Nothing.
No fight.
No resistance.
Just compliance.
Just weight.
Just the terrifying suggestion that whatever made Klaus Klaus had already stepped out of the room.
“Again,” Grace said.
Five breathed for him.
The machine gave a thin, rising whine.
And then—
It broke.
The flatline screamed.
It was not a dramatic sound. Not cinematic. Not grand. It was thin and precise and unbearable, a single continuous note that cut through the room and kept going, as if it had no intention of ever stopping.
For a moment—just one—everything else disappeared.
No room.
No brothers.
No past.
Just that sound.
Five had heard it before.
Hospitals. Battlefields. Places where people became numbers and then became nothing at all. He knew exactly what it meant. He knew exactly how often it could not be reversed.
He rejected it instantly.
“No.”
The word came out quiet. Absolute.
Grace’s hands shifted. Compressions began. Perfect rhythm. Mechanical certainty.
“Airway secured.”
Five didn’t answer. He didn’t need to. He forced air into Klaus’s lungs, counted the resistance, measured the response.
Too little.
Too late.
“Epinephrine.”
He passed it without looking.
The shriek continued.
Behind him, Luther made a sound that might have been Klaus’s name or might have been nothing at all. It didn’t matter. Luther was out of the way. That was all that mattered.
Diego said nothing.
Five was aware of him anyway. Of the tension in the room, of the weight of his presence, of the fact that Diego was watching this like it was something he could fix if he understood it hard enough.
There was nothing to understand.
This was consequence.
“Again,” Grace said.
Five obeyed.
Numbers. Process. Mechanics.
Anything but meaning.
The line stayed flat.
Five had seen this moment before—the exact second where a body decided it was done. Where the systems failed in quiet agreement. Where the fight left.
He felt it now.
In the stillness.
In the compliance.
In the way Klaus did not resist even this.
Five leaned closer, voice dropping to something sharp and personal and almost cruel.
“Don’t you dare.”
No response.
Of course not.
Grace’s hands didn’t falter.
The line trembled.
Once.
Five stilled.
Again.
A stutter—weak, ugly, insufficient.
But there.
Five felt the pulse under his fingers like a fault line shifting.
The flatline broke.
The scream cut off.
The silence that followed was worse.
Not empty—never empty—but fragile. Suspended. Like the room itself was waiting to see if this reversal would hold or snap back into inevitability.
Klaus didn’t wake.
Didn’t move.
He just lay there, breathing in shallow, uneven pulls, each one a negotiation.
Grace eased back with a small, satisfied sound. “There we are.”
Like she’d adjusted a setting.
Like she hadn’t just dragged someone back from the edge of nothing.
Five didn’t move immediately.
He watched the monitor. Counted the rhythm. Waited for it to fail again.
It didn’t.
Not yet.
He removed the mask slowly.
Klaus remained exactly as he was—grey, exhausted, used up past anything resembling dignity.
Alive.
Barely.
The machine settled
That’s the only reason Five knows it’s over.
Not fixed.
Not safe.
Just—
not actively getting worse.
The line holds. Thin. Uneven. Real enough to keep going.
Grace adjusts something at Klaus’s side, efficient as ever, already moving on to the next problem because the current one has stopped screaming.
“Stabilised,” she says.
Five doesn’t respond.
He’s still watching Klaus.
Waiting for the reversal.
For the moment the body changes its mind again.
It doesn’t.
Not yet.
---
Behind him, Luther exhales like he’s been holding it for hours.
Diego doesn’t move.
Five can feel him there anyway—tight, contained, waiting for someone to tell him what this means.
No one does.
---
Grace reaches for the pen.
“That will need to be replaced,” she says lightly.
Five’s hand snaps out before she can touch it.
“Wait.”
She pauses.
Looks at him.
Five doesn’t explain.
He just—
looks.
At the pen.
At the angle.
At the blood.
At the fact that this—this ridiculous, improvised, plastic thing—is the only reason Klaus is still on the table.
Files it.
Then steps back.
“Do it.”
Grace removes it cleanly.
The hiss that follows is sharper this time.
Klaus reacts.
A violent, involuntary flinch—shoulders locking, breath catching hard like something just tore through him again—
and then he drops back into stillness.
Alive.
Unconscious.
Gone.
---
Five wipes his hands on his sleeves.
The ink doesn’t come off.
---
“Out,” he says.
No one argues.
Not this time.
Luther backs toward the door immediately.
Diego hesitates—
just for a second—
then follows.
Five stays long enough to confirm the rhythm holds.
Then he turns.
Leaves.
The hallway is too quiet.
It shouldn’t be.
There should be noise. Movement. Something that matches what just happened.
Instead—
doors closed.
Lights steady.
The Academy pretends to be a house again.
---
Allison.
Upstairs.
Sedated.
Alive.
---
Vanya.
Down the hall.
Contained.
Controlled.
Not a threat.
Not right now.
---
Klaus.
Almost—
not here.
---
Five stops in the middle of the corridor.
For no reason he can justify.
Just—
stops.
---
There is blood under his nails.
Blue ink in the creases of his fingers.
---
He exhales once.
Sharp.
Controlled.
Then—
moves.
---
The kitchen is louder than it should be.
That is the first thing.
Too much sound for a house that amost lost someone an hour ago.
Coffee.
Movement.
Cabinets.
Normal.
---
Klaus is at the table.
---
Five doesn’t understand that for half a second.
Because Klaus is—
upright.
Talking.
Alive in the wrong way.
---
His hands are wedged between his knees, trying to hold something still that won’t cooperate. His curls are damp, clinging to his forehead. His skin has that waxy, overbright look of someone running on fumes and pretending it is energy.
He looks—
worse than he does on the table.
Just not in a way that forces attention.
---
“Eat the toast, Klaus. You’re shaking the floor.”
Luther’s voice.
Already irritated.
Already missing it.
---
Klaus doesn’t look up.
“It’s cardboard, Luther. If you actually wanted to help, you’d have brought me a gallon of Gatorade and a cigarette.”
His voice is wrong.
Thin.
Wet.
Trying for flippant and landing somewhere brittle.
“I’m dying, and you’re offering me burnt sourdough?”
---
“Just shut up and chew,” Diego snaps from the counter.
Knife in hand.
Sharpening.
Rhythmic.
Controlled.
Annoyed.
“You’re making the coffee splash in the pot. It’s annoying. Handle yourself for five minutes.”
---
Five stands in the doorway.
Watches.
---
Klaus laughs.
Or tries to.
“Oh, I’m sorry my agonizing physical collapse is distracting—”
The words catch halfway through.
Break.
Recover.
Push forward anyway.
“Should I go die in the garden? Would that be more aesthetic—”
---
Five steps into the room.
---
The sound doesn’t change.
That is the second thing.
No one adjusts.
No one recalibrates.
The room absorbs him like nothing is wrong.
---
Klaus is still shaking.
Badly.
Visible.
Obvious.
---
Five registers it.
Of course he does.
He registers everything.
---
Files it.
---
Detox.
---
Not urgent.
---
“We’re leaving,” Five says.
---
And the morning and subsequent chain of events lock into place.