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Soli Deo (To You Alone)

Summary:

When a sadistic villain orchestrates a lethal Kryptonite trap in the depths of Gotham’s underbelly, he doesn't just catch Superman—he uncovers the fragile, fiercely guarded bond between the Man of Steel and the Dark Knight. Armed with a high-caliber rifle and radioactive venom, the captor expects an easy execution. What he doesn't expect is a mortally wounded Batman walking straight into his own grave just to buy Clark a second to breathe.

 

Following a brutal showdown and a frantic medical rescue in the Batcave where Bruce's heart stops twice on the operating table, Clark and Alfred are left to hold the line between life and death. It’s a devastating exploration of what happens when a god is forced to face his own helplessness, and a mortal man proves that his greatest weapon isn't his armor, but the terrifying depth of his love.

Notes:

Sorry for any misspellings and grammar errors

Chapter Text

The rain in Gotham didn’t fall; it bled. It slicked the gargoyles and turned the alleyways into mirrors of neon and misery. But tonight, the air smelled less like ozone and more like copper. Copper and cheap nylon.

High above the neon glow, the Batmobile purred in the shadows of an abandoned warehouse, its engine idling like a restless beast. Inside the cockpit, the silence was suffocating.

"That's eight, Bruce."

Clark’s voice didn’t come from the comms. It came from the passenger seat, heavy and thick with a terror he rarely allowed himself to feel. The Man of Steel looked small in the cramped, high-tech interior, his broad shoulders tense, his cape bunched around him like a shroud.

Bruce didn't look up from the dash monitors. The glowing blue light washed over the sharp angles of his cowl, masking the dark circles under his eyes. On the screen was a police band photograph. Another body. A young man, barely twenty, dumped in an alley behind a theater. He was wearing a plastic, store-bought Batman mask and a cheap fabric cape that had torn when he fell.

Pinned to his chest with a rusted hunting knife was a water-logged piece of parchment.

COME OUT, LITTLE MOUSE. OR THE TRAPS WILL KEEP SNAPPING.

"I see it, Clark," Bruce said, his voice a gravelly, controlled rasp. But beneath the cowl, his jaw was clenched so tightly a muscle twitched.

"They're hunting you," Clark whispered, his hand reaching across the console. His fingers, capable of shattering mountains, hovered for a fraction of a second before gently pressing against the armored forearm of Bruce’s suit. "Not the monster who's doing this. The city. They're turning on you."

It was true. Even without super-hearing, Bruce could feel the shift in the city’s pulse. The police radio was a chaotic mess of panicked citizens reporting 'Batman sightings.' Angry mobs were forming in the Bowery, armed with pipes and baseball bats, breaking into abandoned buildings. They didn't care about justice anymore; they cared about survival. They wanted to drag the real Batman out by his throat and hand him over to whoever was pulling the strings, just to make the killings stop.

"They're afraid," Bruce said, finally turning his head to look at Clark. The white lenses of his cowl narrowed. "Fear makes people vicious. You know that."

"I don't care about them right now," Clark blurted out, the raw honesty of it striking the air like a slap. He leaned closer, his blue eyes wide, burning with a desperate, frantic energy. "Bruce, they are killing innocent people just to get a glimpse of you. And the moment you step foot out there, whoever is doing this is going to detonate whatever trap they’ve set. I can't... I can't just fly around and watch you walk into a firing squad."

Bruce sighed, a heavy, exhausted sound. He reached up, pressing a button on his collar. The cowl split and retracted, folding back to reveal the tired, bruised face of Bruce Wayne. Without the mask, the vulnerability was striking. He looked human. He looked mortal.

"I'm not going out tonight," Bruce said softly.

Clark blinked, caught off guard. "You're... you're staying in?"

"I have to. If Batman appears, the mobs will rip the city apart trying to catch me, or the killer will trigger another execution to prove a point. I need to think. I need to find the pattern from the cave." Bruce placed his hand over Clark’s, squeezing tightly. "I'm going home, Clark. I need to think"

A wave of profound relief washed over Clark’s face, so intense it made his shoulders drop. He leaned forward, pressing his forehead against Bruce’s. They were still so new to this—to the quiet confessions in the dark, to the terrifying realization that they meant more to each other than the capes they wore. Loving Superman was easy; loving Bruce Wayne was a masterclass in agonizing anxiety.

"Thank you," Clark breathed, his warm breath fanning across Bruce's lips. "Thank you."

 

 

 

The Batcave was a cathedral of cold steel and flickering screens. Down here, the madness of Gotham felt distant, yet its ghosts crowded the monitors.

Bruce sat at the supercomputer in a simple black shirt and sweatpants, his bare fingers flying across the keyboard. Autopsy reports, chemical analysis of the cheap nylon suits, tracking the typography of the notes—he was dismantling the case piece by piece.

But he wasn't alone.

Clark was pacing the perimeter of the cave, the air humming with his repressed kinetic energy. He couldn't sit still. Every few seconds, his head would snap toward the ceiling, his eyes scanning through miles of bedrock toward the city above.

"They're screaming his name," Clark muttered, his voice trembling. He stopped pacing, gripping the handrail of the catwalk so hard the steel groaned and warped under his fingers.

"Clark. Focus," Bruce said without looking back. "Filter it out."

"I can't!" Clark shouted, the sound echoing off the cavern walls, startling a flock of bats above. He flew down from the catwalk, landing heavily on the stone floor behind Bruce’s chair. He grabbed the back of the chair, spinning Bruce around to face him. "I can hear them, Bruce! They're in the streets, burning effigies of you. They're crying, asking why you won't just give yourself up to save them. They hate you. After everything you've bled for them, they want to serve you up on a silver platter."

"It's a rational response to terror," Bruce said, his voice entirely too calm, which only infuriated Clark more.

"Stop being a detective for one second!" Clark begged, dropping to his knees in front of Bruce's chair. He took Bruce’s hands, forcing the billionaire to look at him. Clark’s eyes were rimmed with red, a rare sight for an invincible god. "Look at me. Please."

Bruce’s expression softened. The cold, analytical facade cracked, revealing the profound ache underneath. He leaned forward, cupping Clark’s face. "I am looking at you."

"I'm terrified," Clark whispered, a tear finally slipping down his cheek. "I can fight warlords, Bruce. I can stop asteroids. But I can't fight a city that wants to swallow you whole. I keep hearing your heartbeat, and then I imagine it stopping because someone caught you off guard. Because some desperate father in an alley stabbed you thinking he was saving his own kids. Whoever is doing this knows your heart. They're using your city to break you."

"They won't," Bruce promised, his thumb wiping away the tear on Clark's cheek. He leaned down, pressing his lips to Clark’s.

The kiss started with a desperate intensity, a chaotic clash of fear and longing. Clark pulled Bruce out of the chair and into his arms, holding him with a fierce, possessive grip, as if he could shield Bruce from the very concept of mortality. Bruce wrapped his arms around Clark’s neck, burying his fingers in the kryptonian's thick hair, pulling him closer, drinking in the warmth and safety that only Clark could provide.

For a few fragile moments, Gotham didn't exist. There were no cheap masks, no bloody notes, no angry mobs. There was only the steady, thumping rhythm of Clark’s heart against Bruce’s chest, a grounding anchor in a sea of madness.

When they parted, both were breathing heavily. Clark kept his forehead rested against Bruce’s chest, listening to the human heartbeat he cherished above all else.

"I love you," Clark murmured into the fabric of Bruce's shirt. "Do you hear me? I love you. More than the sky, more than Metropolis. If I lose you to that place..."

"You won't lose me," Bruce whispered, his voice cracking slightly as the weight of Clark's love hit him. It was terrifying, honestly. Bruce was used to having nothing to lose. Having Clark meant having everything to lose. "But I need you to be my eyes up there. I need you to watch the mobs, make sure they don't kill each other in the panic. Can you do that for me?"

Clark closed his eyes, inhaling Bruce’s scent—rain, expensive soap, and iron. "Only if you promise to stay underground. Don't put on the cowl, Bruce. Not until we know who it is."

Bruce looked past Clark’s shoulder at the glowing computer screen. A match had just popped up on the monitor—the specific dye used on the cheap Batman suits had been traced to a defunct textile factory in the Narrows.

He looked back at the man he loved, seeing the deep, agonizing fear in Clark's eyes. Bruce knew he couldn't stay in the cave. The killer was waiting, and the city was bleeding out. But looking at Clark, he couldn't bear to break his heart just yet.

"I'll stay right here," Bruce lied softly, kissing Clark's brow. "Go. Help them."

Clark nodded, giving Bruce one last, lingering embrace before blurring upward, flying out through the cave's waterfall exit into the storming night.

Bruce watched him go, the warmth leaving the room instantly. He turned back to the computer, his face hardening once more into stone. He walked over to the glass case holding his armor.

He didn't want to die. For the first time in his life, he had a brilliant, shining reason to live. But Gotham was his cross to bear, and he wouldn't let his city burn—even if it meant walking straight into the jaws of a trap.

With a heavy heart, Bruce pressed his palm against the glass scanner. The suit slid open.