Chapter Text
Chapter 1: The Cold Truth
The dream always begins the same way.
Bruce stands at the edge of his own grave, watching dirt fall like rain onto polished mahogany. The coffin is smaller than he expected, somehow diminished by the yawning mouth of earth that swallows it. Above ground, Gotham continues its restless dance—sirens wailing their familiar lullaby, the distant hum of traffic threading through the city's arteries—but here, six feet down, there is only the terrible arithmetic of absence.
He tries to move, to climb out, to claw his way back to the surface, but his hands pass through everything like smoke.
He is already gone.
Already nothing but the memory of weight, the ghost of breath, the echo of a heartbeat that no longer drums its mortal rhythm against his ribs.
Then he sees Clark.
Superman stands at the graveside, cape whipping in a wind that Bruce cannot feel. This is not the Clark of daylight confidence, not the man of steel who moves through the world with quiet certainty.
This Clark is broken.
His face is a geography of devastation, each line etched by a grief so profound it seems to warp the air around him. His shoulders shake—not with cold, but with the kind of sobs that come from somewhere deeper than lungs, deeper than heart.
Bruce has seen Clark face the end of worlds. He has watched him stare down cosmic horrors and planet-killing meteors with nothing more than a tightening around his eyes.
Here, now, Clark weeps like a child.
Like a man who has discovered that even gods can be abandoned.
"You weren't supposed to leave first," Clark whispers, his voice barely audible above the wind. "You weren't supposed to—" The words break apart, become nothing but breath and anguish.
Bruce tries to reach for him, tries to offer some comfort, but his fingers find only empty air. He is a witness to his own aftermath, a spectator to the wreckage of his departure. The irony is not lost on him—even in death, he remains the detective, observing, cataloging, trying to solve the unsolvable mystery of what he has left behind.
Clark kneels beside the grave, his invulnerable hands pressed flat against the earth as if he could somehow push through soil and stone and time to bring Bruce back. "I'm not ready," he says, and the admission is more devastating than any scream. "I thought I had more time. I thought—"
Time, Bruce understands now with crystalline clarity, was always the enemy. Time was always the third presence in their partnership, the silent countdown that neither of them wanted to acknowledge.
Clark will have centuries, millennia perhaps, stretching out before him like an endless horizon.
Bruce gets decades if he's lucky, a handful of years if he's not.
The dream shifts, as dreams do, without logic or transition. Now Bruce is standing in the Watchtower, watching security footage of their last conversation. On the screen, he sees himself—alive, breathing, gesturing with hands that cast real shadows. Clark is there too, laughing at something Bruce has said, his face bright with that particular joy he reserves for their quiet moments.
Dead-Bruce watches Living-Bruce with a kind of archaeological fascination. Here is a man who still believes in tomorrow, who still moves through the world as if his presence is permanent, necessary, guaranteed. Living-Bruce has no idea that he is already halfway to becoming a memory, that every gesture, every word, every breath is being borrowed against a debt that will come due sooner than either of them expects.
"You have to tell him," Dead-Bruce says to his living self, but the words fall into the void between sleeping and waking. "You have to prepare him."
Living-Bruce cannot hear. He is too busy being alive, too busy believing in the fiction of forever.
The dream fractures.
Bruce finds himself in a dozen different scenes simultaneously—standing in empty rooms where his shadow should be, watching Clark search for him in places he will never again inhabit.
He sees the Batcave, silent and dark, its screens reflecting nothing but Clark's haunted face.
He sees their bedroom, the sheets still rumpled from his side of the bed, Clark's hand reaching across the emptiness where warmth should be.
Most cruel of all, he sees Clark flying through Gotham's skyline, cape streaming behind him, still listening for a heartbeat that will never again call out to him across the night. Still hoping, against all evidence and logic, that this is temporary. That Bruce will find his way back from whatever dark place has claimed him.
"I'm sorry," Bruce tries to say, but the words have no substance in this place between life and death. "I'm sorry I can't stay."
The dream begins to dissolve at the edges, reality bleeding through in fragments of sensation—the weight of blankets, the whisper of climate-controlled air, the familiar hum of Wayne Manor settling around him. The images cling to him like smoke, like guilt, like prophecy.
Clark's face, etched with a terror so profound it feels like a gut punch.
Bruce jerks awake.
For a moment, he exists in that liminal space between sleeping and consciousness, where the dream logic still holds sway and he half-expects to find himself translucent, ghostly, already beginning to fade. Still, his hands are solid when he presses them to his chest, feeling the steady thrum of his heart—that traitor organ that beats out the seconds of his remaining time with mechanical precision.
Beside him, Clark sleeps with the uninhibited stillness of the invulnerable. His breathing is deep and even, his face peaceful in the dim blue glow of the security monitors. One arm is flung across Bruce's side of the bed, an unconscious gesture of possession that, in the aftermath of the dream, feels like a mockery.
Bruce reaches out with trembling fingers and touches Clark's hand. The contact is electric—not with power, but with presence.
Warmth.
Life.
The impossible strength contained in those fingers could reshape mountains, could stop falling satellites, could hold back the tide of entropy itself. But they cannot hold back time. They cannot keep Bruce tethered to this world when his body finally decides it has had enough of the fight.
The dream clings to him like a fever, images flickering through his mind with crystalline clarity.
Clark's broken sobs.
The empty grave.
The terrible arithmetic of absence.
This is not just a nightmare, Bruce realizes with the cold precision that has served him so well in darker nights. This is inevitability. This is the future writing itself in his subconscious, preparing him for the one mystery he cannot solve; what happens when the mortal half of their partnership reaches its natural conclusion.
He studies Clark's sleeping face, cataloging the details with the desperate intensity of a man trying to memorize a vanishing masterpiece.
The slight upturn at the corner of his mouth, even in sleep.
The way his dark hair falls across his forehead.
The faint line between his brows that appears when he's concentrating, even in dreams.
How long does Clark have? Centuries, certainly. Millennia, possibly. Long enough to watch civilizations rise and fall, to see Gotham become something unrecognizable, to forget the sound of Bruce's voice and the feel of his hand and the specific weight of his body in their shared bed.
And Bruce? Bruce gets maybe thirty years if he's careful. Twenty if he's not. A handful of decades against Clark's endless tomorrow.
The mathematics of their love have always been impossible, but he has never felt the imbalance so acutely. In the dark hours before dawn, with the dream's cold fingers still wrapped around his heart, Bruce Wayne confronts the truth that will reshape everything that comes after—this is a temporary grace.
Clark's heart will beat for a thousand years.
His will not.
The knowledge settles over him like a shroud, heavy and inescapable. He is not afraid of death—he has never been afraid of death. He is terrified, bone-deep and soul-sick terrified, of what he is leaving behind.
Of the hole his absence will carve in Clark's infinite timeline.
Of the grief that will shadow his beloved's face for decades, centuries, eons.
In the growing light of dawn filtering through the Manor's tall windows, Bruce makes a decision that will define every moment of whatever time he has left.
He will not leave Clark unprepared.
He will not be just another ghost haunting the endless corridors of an immortal's memory.
He will give Clark reasons to be missed rather than simply mourned. He will craft a legacy of love that transcends the brutal arithmetic of mortality. He will transform his inevitable absence into something beautiful.
Even if it kills him.