The first thing Ghost notices is that {user} still has the headphones on.

That alone is enough to make his eyes narrow behind the skull mask.

The gym smells like rubber mats, old sweat, antiseptic wipes, and the faint metallic tang of taped knuckles. Late afternoon light cuts through the high windows in long pale bars, catching dust in the air and turning the sparring mats into something that almost looks staged.

Almost.

Price stands near the edge of the mat with his arms folded, hat pulled low, his expression set in that particular line between patience and warning. He has been watching {user} for three days now. Everyone has.

The headphones are impossible to miss.

In the mess. In the corridor. At weapons cleaning. During cooldowns. Outside, alone, with one knee drawn up and fingers tapping softly against their thigh like they are counting something the rest of the world cannot hear.

Soap had called it “mysterious recruit behavior.”

Gaz had called it “probably a coping mechanism.”

Ghost had called it “a bad habit.”

Price had said nothing at all.

Until now.

“Headphones off,” Price says.

{user} stands in the center of the mat.

They do not move to remove them.

Soap, already barefoot on the edge of the mat and rolling his shoulders loose, grins like someone has just handed him a live grenade with a bow on it. “Bold start, that. Disobeyin’ the captain before the fight even begins.”

Gaz leans against the equipment rack, arms crossed loosely over his chest. Unlike Soap, he is not smiling much. His attention is lower, sharper — fixed on {user}’s feet.

Because {user} is moving.

Barely.

A light bounce on the balls of their feet.

Not nervous. Not twitchy. Not showing off.

Controlled.

Their shoulders stay loose. Their hands flex once at their sides, then settle. Their head tilts a fraction, as if they are listening deeper into whatever is playing through the headphones. Their breathing stays even.

Ghost sees it.

So does Gaz.

Soap sees Ghost seeing it and immediately perks up. “What? What’d I miss?”

Gaz does not look away from {user}. “They’re timing something.”

Price’s eyes shift, just slightly.

Ghost’s voice comes low. “Music.”

Soap blinks. Then his grin grows wider. “No.”

{user} keeps bouncing lightly, body swaying by degrees so small most soldiers would miss it. A subtle bend in the knees. A soft roll through the shoulders. A rhythm held under the skin.

Price studies them for another second, then exhales through his nose.

Fine, then.

“Assessment stays as planned.” His voice settles over the room. “Four-on-one. Controlled contact. No cheap shots. No head trauma. They tap or I call it, it ends.”

Soap claps his hands once and steps onto the mat. “Oh, this is gonna be brilliant.”

Gaz pushes off the wall, quiet and smooth, taking his place with the kind of relaxed focus that makes him dangerous. Ghost steps in without flourish, black gear swallowing the light, shoulders squared, presence heavy enough that the watching soldiers along the wall go still.

Price joins last.

That changes the room.

Four members of Task Force 141, spread around the mat in a loose circle.

And {user} in the middle.

Still bouncing.

Still listening.

Still calm.

For a second, nobody moves.

The song leaking faintly from the headphones is soft at first — not loud enough to make out clearly from across the mat, just a pulse, a shimmer, a bright little thread of rhythm hidden under the gym’s silence.

Soap’s brows jump.

“Is that—”

“Focus, Sergeant,” Price warns.

Soap bites down on the comment, but only barely.

{user} shifts their weight from one foot to the other.

Left.

Right.

Soft.

Light.

The rhythm builds.

Gaz notices the exact moment their breathing changes.

Ghost notices the exact moment their stance opens.

Price notices the exact moment the recruit stops looking like someone waiting to be attacked and starts looking like someone waiting for a cue.

Then the song lifts.

And {user} moves.

Not forward.

Around.

Soap comes in first because of course he does, quick and grinning, testing with a feint meant to draw {user} into panic.

{user} slips past him like water.

No wasted motion. No hard block. Just a smooth pivot, shoulder rolling out of reach, one foot sliding back on the mat with dancer-light precision.

Soap’s grin flashes wider. “Oh, hello—”

Gaz cuts in from the side.

{user} turns with the beat.

A half-step back. A narrow duck. A palm raised just enough to redirect Gaz’s forearm past their shoulder. Their body follows the motion like it was always meant to go that way, hips turning, feet gliding, breath steady.

Ghost moves next.

Fast.

Harder than the others.

Not cruel. Not uncontrolled.

But direct enough to end the little performance if that is all it is.

{user} drops beneath his reach.

For one strange second, the room seems to hold its breath.

Ghost’s arm cuts through empty air.

{user} is already behind him.

A light tap lands between his shoulder blades.

Not a strike.

A point.

Soap makes a sound like he has just watched someone slap a bear and live.

Gaz’s mouth twitches.

Price’s brows rise.

Ghost turns slowly.

“Cute,” he says.

But there is less dismissal in it now.

{user} is already moving again.

The fight opens around them.

Soap presses with speed, laughing under his breath now, delighted by the way {user} keeps sliding just out of reach. Gaz starts adapting, watching the bounce, the shoulders, the timing of each inhale, trying to catch the pattern beneath the song. Price tests the edges instead of the center, patient and heavy, forcing {user} to choose angles instead of simply flowing away.

Ghost stalks.

That is the only word for it.

He does not chase the rhythm. He tries to break it.

He steps in on the off-beat.

{user} nearly gets caught.

Nearly.

Their foot skids half an inch on the mat. Their balance shifts wrong for the first time.

Ghost sees it.

So does Price.

So does Gaz.

Soap, unfortunately, sees it too.

“There it is!” Soap crows.

Then {user} smiles.

Just a little.

The rhythm changes.

Their bounce deepens, shoulders rolling loose again, as if the missed step was not a mistake but part of the build. They slide out of Ghost’s reach at the last possible second, turn with the motion, and use Soap’s incoming momentum to slip between him and Gaz.

Soap has to check himself hard to avoid running into Gaz.

“Oi—!”

Gaz catches Soap by the shoulder and shoves him back into balance. “Watch your line.”

“I was watchin’!”

“You were laughing.”

“I can do both.”

“No, you can’t,” Ghost says.

Price does not join in.

He is watching {user} too closely now.

Because the longer the spar goes, the more obvious it becomes.

This is not just dancing.

It is timing.

Distance control.

Breath regulation.

Pattern disruption.

{user} is using the song like a metronome, like a map, like an anchor. Every sway keeps their body loose. Every bounce keeps their weight ready to shift. Every turn steals force from the strike coming toward them and sends it somewhere useless.

They are not overpowering Task Force 141.

They are making four trained operators fight on the wrong rhythm.

And somehow, impossibly, they are making it look graceful.

Soap lunges again, lower this time.

{user} spins out of it, one hand grazing his shoulder as they pass.

Gaz steps in to cut off the escape.

{user} folds backward under his arm, not quite a dance move, not quite combatives, something between the two that makes half the soldiers watching mutter under their breath.

Ghost closes the gap.

Price blocks the open angle.

For the first time, {user} has nowhere obvious to go.

There is a beat of stillness.

Then {user} drops.

Low.

Fast.

A sweep clips Soap’s balance just enough to make him hop back with a startled curse. {user} uses that opening to pivot through the space Soap gives up, shoulder brushing past Ghost’s vest, turning so close that for half a second Ghost could grab them if he were just a fraction faster.

He is not.

Their hand taps his ribs.

Another point.

Ghost freezes.

Soap’s laughter explodes out of him. “That’s two on you, LT!”

Ghost does not look at him.

Gaz is grinning now, no hiding it.

Price finally lets out a low, tired sigh, but even he cannot quite bury the interest in his eyes.

The song is still going.

{user} is still bouncing.

Still breathing.

Still moving like the fight is something they can hear before anyone else can feel it.

Ghost shifts his stance.

Soap wipes a hand over his mouth, delighted.

Gaz rolls his shoulders and starts counting under his breath.

Price steps forward, voice calm and rough.

“Again.”

The room tightens.

The four of them reset around {user}.

And this time, none of them are laughing quite as much.

Well.

Soap is.

But now even he is watching the beat.