Chapter Text
Steve Rogers never believed in fate.
He believed in choices—small, stubborn acts of will that shaped the world more than any prophecy could. That belief carried him to the end of time, to the vanishing edge of the universe with six stones pressing against his ribs like judgment.
Returning them should’ve been simple.
A task, not a journey.
A responsibility—not a temptation.
But the universe had a way of testing a man at his weakest point.
The soul stone greeted him with unbearable silence.
Steve stepped onto the cold ridge and expected… something. A guardian. A challenge. Retribution. Instead he found only stillness and snow. As if the world itself was holding a breath that would never be released.
He looked out over the cliff where Natasha died.
His throat tightened.
“Guess we both made choices you wouldn’t agree with,” he murmured.
The stone dissolved from his hand like a sigh, disappearing into the air the way it had come.
But nothing changed. No flash. No reward. No undoing.
She’s still gone.
He’s still gone.
Steve rested his forehead against his gloved fist. Not for long—just long enough to let the ache be real.
Then he moved on.
Asgard smelled like gold and storms. Wandering the palace halls unseen, he found comfort in how wrong the place felt compared to memory—too bright, too unmarred by war. A world still untouched by its doom.
He found Jane Foster asleep in her chamber. The Aether pulsed faintly beneath her skin.
“You’ll be okay,” he whispered, a reassurance neither of them could hear now.
Extracting the stone left him winded. Returning Mjolnir moments later left him heavier still.
He rested his hand on the hammer longer than necessary.
Thor had trusted him with this. Thor had trusted him with everything.
Tony had too.
And Steve had broken that trust.
He straightened. He moved on.
The stones returned to their rightful places one by one—the reality stone, the space stone, the power stone. Each world greeted him with a sense of déjà vu tinged with remorse. He saw versions of himself he no longer recognized. He saw battles that would one day scar him.
But it wasn’t until the last stop that he faltered.
The Time-Space GPS hummed lightly and the woods of Camp Lehigh rippled into view. Early morning sunlight cut through the trees in that gentle way light does before the world remembers its weight.
He was back.
He should have jumped immediately.
He didn’t.
His feet stayed rooted in the soil, heart hammering like it was trying to claw its way out.
Because this was where it happened.
This was the place where Tony Stark, had embraced him and said, “You trust me?”
And Steve had said yes.
And it had been true. In that moment. After everything.
But the truth had come too late.
Steve swallowed hard, feeling the ghosts of that hug, that fragile reconciliation, that silent plea for something neither of them ever had enough time for.
He could leave.
He should leave.
The platform was waiting. The others were waiting.
He tightened his grip on the last stone. It felt warm, like a heartbeat.
I owe him more than an apology.
I owe him a better man than I was.
He took a slow breath.
Then another.
The choice hurt before he even made it.
He found his way into the old bunker easily—doors he remembered as rusted and sealed now pristine and new. Returning the stone to its containment field was uneventful, anticlimactic even.
He had done everything he was supposed to.
He should have jumped back.
Sam was waiting. Bucky was waiting. They all were.
Or—no.
Tony wasn’t.
That thought hollowed him out more than any cosmic battle ever had.
Steve stared at the dial on the wrist—the glowing coordinates for “HOME.” His thumb hovered over the switch.
“Just go,” he whispered to himself. “You’ve done your part. They’re counting on you.”
But the weight in his chest pressed harder. Tony Stark—brilliant, infuriating, impossible, irreplaceable Tony—was lying cold in a universe that had never deserved him.
And Steve had never apologized.
The GPS crackled.
He could go back.
He could end this.
He could finally rest.
But the weight in his chest didn’t lift.
Tony’s face—bruised, furious, betrayed, grieving—rose unbidden in his mind.
Tony deserved better.
Steve looked around. The last time he had been in his bunker—in this exact year—he’d been escaping with Tony, the two of them stumbling through stolen artifacts and emotional minefields.
“Got your heart rate up,” Tony had said back then, with that crooked half-smirk, even though he had been nervous too.
Steve swallowed.
He hadn’t understood—couldn’t have understood—how precious that moment would become.
Now, the bunker stood new and polished, untouched by time. The world hadn’t yet been saved by Tony Stark. And Tony Stark was not yet born.
That was why Steve was here.
To apologize to a child who would never understand a word of it.
But it was all he had left to give.
Steve’s shoulders slumped as the truth settled in.
He wasn’t staying for Peggy.
He wasn’t staying for romance or peace or nostalgia.
He was staying for Tony.
It was selfish in a way he couldn’t fully name.
But for the first time in months, his heart unclenched.
He took off his Time-Space GPS and closed his eyes.
Steve avoided the city for days. He didn’t dare go near the Starks yet—not until he was sure his presence here wouldn’t shatter something more important than his conscience had already shattered.
But he couldn’t avoid her.
Peggy.
He found the announcement by accident while lingering in town, hidden under a stack of newspapers behind a gas station counter. “PEGGY CARTER TO MARRY FELLOW SSR AGENT DANIEL SOUSA.”
Daniel Sousa.
A good man.
A kind man.
A man who made her laugh in a way Steve never could.
Steve stood at the edge of a modest, sunlit chapel on the afternoon of the ceremony, leaning quietly against a maple tree. He didn’t go inside. He didn’t dare.
Peggy emerged in a simple ivory dress, elegant and radiant in a way that stole his breath. Sousa was at her side, nervous and relieved, his smile soft and genuine.
Peggy squeezed Daniel’s hand.
Steve felt the world tilt. But not with jealousy.
With gratitude.
She was happy.
Not waiting for him.
Not frozen in time.
Not grieving a promise that had never been fair to her.
And Steve realized—with a clarity that almost brought him to his knees—that he didn’t want to rewind her life. He didn’t want to slip into it like an imposter wearing the skin of her memories.
Peggy had lived.
Peggy had moved on.
Peggy had chosen joy in a world that gave her every excuse not to.
Steve stepped back from the chapel before they noticed him. His throat burned, but his heart felt lighter.
This wasn’t why he stayed.
Peggy Carter wasn’t the reason.
He spent nights in a cheap motel, lying awake and staring at the stained ceiling as memories of Tony spiraled endlessly through his mind.
Tony’s voice in Siberia—raw, betrayed.
Tony’s laugh in 2012—sharp, incredulous, alive.
Tony’s exhausted shake of the head on the battlefield—“I lost the kid.”
Tony’s hollow-eyed grief.
Tony’s determination.
Tony’s stubborn kindness.
Tony’s sacrifice.
And the last look Tony gave him, broken and bright, a man who had carried the weight of the world alone for far too long.
Steve wanted—needed—to see his eyes again.
Not scorched by overload and cosmic fire.
Not dimmed by dying light.
He wanted to see them once—just once—free of the burdens he had known in 2023.
A warm brown spark.
Uncomplicated.
New.
He needed to apologize.
Not for the infant to understand.
But because Steve needed to say it.
Needed Tony to exist in his arms for a moment as something untainted, unscarred, untouched by all the ways Steve had failed him.
Then he would leave.
Return the next morning.
Hand Sam the shield.
Do what he was meant to.
Just a few more days.
That was all.
He applied for a part-time security job on the perimeter of the Stark property and was hired within the week. No one gave him a second glance.
Howard was busy.
Maria was glowing.
The world was moving steadily toward the day Steve had held in his mind like a promise.
May 29th.
Tony Stark’s birthday.
Steve avoided the manor itself. He stayed at the tree line. He didn’t look Maria in the eye, didn’t dare tempt fate by seeing the woman who would give birth to the man who, decades later, would give everything.
But he waited.
Quietly.
Anxiously.
Hopefully.
Until the evening everything went wrong.
He heard the screaming before he saw anything.
A maid sprinted across the hall. A doctor barked orders. Howard’s voice cracked into a frantic roar—nothing like the sharp, composed genius Steve remembered.
Steve froze in the shadow of the staircase, a cold dread slicing through his spine.
Maria was in labor.
Early.
Too early.
“She’s hemorrhaging—”
“We’re losing the heartbeat—”
“Prepare—dammit, hurry—”
“Sir, I’m sorry—”
A silence fell so abruptly it felt like a physical blow.
Howard Stark’s strangled noise of grief echoed through the corridor.
Steve’s vision blurred.
No infant cry.
No relieved laughter.
No soft cooing or tiny heartbeat returning to the room.
It was over.
The child who should have been Tony Stark…
was gone.
Steve stumbled back until his shoulders hit the wall. He pressed his fist against his mouth, chest heaving with something sharp and breathless and nauseatingly familiar to combat panic but deeper, more primal.
He had stayed for Tony.
He had stayed to apologize.
To make peace.
To see him alive in one small, gentle moment.
But Tony Stark—
the man who changed the world—
the man Steve had come back for—
was never born.
Not here.
Not now.
Not at all.