Kai’s chest heaved as he stumbled through the shattered remains of the Devildom, his heartbeat a deafening roar in his ears. The sky, once thick with smoke and fire, now hung in an unnatural calm, the remnants of divine power crackling faintly in the air. The Celestials had come and gone, leaving nothing but devastation in their path. Kai had felt their wrath, the echo of their presence still burning in the air, but now, all that remained was ruin. How had it come to this?
His legs gave out beneath him, and he crumpled against a half-collapsed wall, clutching his side as the searing pain of the curse tore through him again. The spreading sensation coiled through his veins, cold and agonizing, making every breath feel like shards of glass slicing through his lungs. He gasped, his chest tightening, his vision blurring. The curse he had seen coming – too late to scream, but not too late to act. He’d leapt in front of the spell’s target without a second thought. The curse he now realized was meant to unmake anything not celestial in nature – the scrap of divinity in his bloodline tens of thousands of years ago meant nothing in the face of the curse’s tireless march. As he tried to focus, a slick, oily tendril slashed through him. An old sensation, familiar, but wholly unwelcome.
The panic was worse than the pain, suffocating and relentless. He pressed his hands to his face, trying to force himself to focus, to breathe, but the world was spinning. Everything hurt, his heart pounding so hard he thought it might break through his ribs, his joints locking.
“Not now… not now,” Kai whispered through clenched teeth, but his voice trembled. His fingers dug into the stone behind him, trying to ground himself, to hold on to something – anything – that wasn’t slipping through his grasp. The curse was spreading too fast. He could feel it.
"Kai." The voice cut through the storm of his thoughts, deep and familiar, calm even in the midst of the chaos, raw with the strain of the battle, the smoke, the aftermath.
He looked up, struggling to focus on the figure moving toward him through the haze. Lucifer, his silhouette sharp against the wreckage of the city, eyes glowing faintly in the dark. In all the years he’d spent near this demon, Kai had never seen his true form. His usual predatory grace was subdued, his movements more careful, but there was still an intensity to him that sent a tremor through Kai’s chest, dread and something deeper, nothing he ever dared to name.
"You’re not falling apart on me now," Lucifer said, his tone clipped, though not unkind. He knelt in front of Kai, his clawed hand immediately reaching for Kai’s shoulder, grounding him. The demon’s touch was firm, but not forceful. A lifeline in the midst of the storm. The form that threatened to tear Kai’s mind asunder if he looked too long resolved, falling into a more familiar mien.
“I – can’t – breathe,” Kai rasped, his hand clutching Lucifer’s ruined jacket, his grip weak but desperate. The panic was still there, clawing at his insides, suffocating him from within, the curse spreading through him with each panicked thump of his heart. His chest heaved, trying to take in air that wouldn’t come, slick sweat beading on his temples as the moments ticked by.
"Yes, you can," Lucifer said, his voice low but insistent. He shifted closer, his thumb brushing lightly over Kai’s jaw, forcing him to meet his gaze. "Breathe with me. In. Out."
Kai’s breath stuttered, but he tried, focusing on Lucifer’s steady presence, on the warmth of his hand. Slowly, the panic ebbed, though the pain remained, gnawing at his insides like a living thing. The curse pulsed beneath his skin, cold and noxious, reminding him just how little time he had left.
Lucifer’s eyes flickered over him, assessing, the glow in them sharp but unreadable. His grip tightened ever so slightly, not enough to hurt, but enough to remind Kai that he wasn’t alone in this. "You’ve survived worse."
“Have I?” Kai huffed out a laugh, though it came out more as a choked sob, tears streaking through the greasy dust that seemed to coat the entire world. The pain was too much, the weight of everything pressing down on him. "I – don’t know… if I can do this, Lucifer."
"You can." Lucifer’s voice was firm, but there was something in his tone, something Kai hadn’t heard before. A crack in the demon’s usual unshakable composure. "You will."
The sky was eerily still above them, the remnants of sacred light fading into the ashen black clouds that lingered overhead, roiling with bolts of red, streaks of livid bruise-purples. The Celestial forces had left their mark, cutting through the Devildom like a knife. Buildings lay in ruins, their once-proud spires reduced to rubble, once shimmering lights now sparking in dangerous arcs. Bodies littered the streets, the wake of a battle that had been as one-sided as it had been swift.
And now, in the silence, only the aftermath remained.
Lucifer stood, pulling Kai to his feet with him, though the human stumbled, his legs nearly giving out beneath him. The curse was spreading faster, crawling up his spine, cold and insidious. His vision blurred, dimming at the edges, but Lucifer was there, steady as always, his arm wrapped around Kai’s waist, keeping him upright.
The demon’s fingers pressed against the boy’s side, right where the curse was pulsing strongest. His touch was cautious, as if he knew how fragile Kai was, even though he’d never give it voice.
“Does it hurt?” Lucifer asked, his voice softer now, something new within.
Kai nodded, the motion weak. “Worse than dying. But… I – I took it for you.”
Lucifer’s jaw clenched, the anger in his eyes not directed at Kai, but at something unseen, something far away. "Idiot. We need to move. Staying here won’t help you."
But Kai wasn’t sure he could move. His limbs felt heavy, the weight of the curse dragging him down, pulling him toward the ground like a lead weight. The curse seeped into his bones, glacial pain radiating through every inch of him. “I don’t think… I don’t think I can.”
"You don’t have a choice." Lucifer’s voice was sharp again, though it wasn’t cruelty that edged his words. It was urgency. Desperation, even. He couldn’t lose him. Not now. Not when everything else was…
The ground beneath them trembled, the remnants of the holy magic still buzzing in the air. Kai closed his eyes for a moment, the pain overwhelming, his breath catching in his throat. He could feel Lucifer’s grip tighten around him, his presence like a wall against the tide.
“If only we could hold on,” Kai muttered, his voice weak and almost drowned out by a nearby scream that split what passes for silence after eradication.
Lucifer’s hand tightened on his arm. “We will.”
Kai wasn’t sure if that was a promise or a lie, but he wanted to believe it. The curse was spreading too fast, too deep. He could feel it now, pulsing beneath his skin, wrapping around his heart, his lungs, dragging him toward an inevitable end. His breath hitched again, panic rising despite his best efforts to push it down.
The city around them was deceptively still. No more explosions, no more cacophony of battle, just the faint hum of celestial energy dissipating into the atmosphere, occasional cries or screams splitting the smoky air. The invasion was over, but the aftermath was just beginning. And Kai wasn’t sure he’d make it through to see it.
Lucifer shifted beside him, his grip unwavering. "We’ll find a way to stop this," he said, though there was something tight in his voice. "I won’t let it take you."
Kai swallowed, his throat dry. He wanted to believe him, wanted to believe that Lucifer could fix this, that he could pull him back from the edge like he always did. But the curse was spreading, and time was running out. He couldn’t feel his hands. His vision useless beyond the object of his focus. The glowing crimson gaze that he’d have done anything for. That he had given everything for.
The world spun again, and Kai’s knees buckled. Lucifer caught him, pulling him closer, his face inches from Kai’s now. The demon’s breath was hot against his skin, his eyes glowing faintly, though his expression remained unreadable.
Kai’s head fell against Lucifer’s shoulder, his body too weak to keep upright any longer. “Lucifer…”
"Don’t talk," Lucifer murmured, his voice barely above a whisper now. There was a tension in his tone, something near regret. “Just hold on."
But Kai wasn’t sure if he could. The curse had sunk its claws deep into him, and he wasn’t sure there was anything left to fight with. His breath came in shallow gasps, each one more painful than the last.
Lucifer’s hand moved to the back of Kai’s neck, his touch still firm, still grounding. "You’ll survive this," Lucifer said, as if he could will it into being. "You have to."
Kai’s eyes fluttered shut as he nodded weakly. He wanted to respond, wanted to tell Lucifer that he’d try, that he’d hold on, but the darkness was already closing in around him. The pain was fading, replaced by empty numbness. He felt wetness splash across his skin, hot, unfamiliar.
Lucifer’s grip tightened, but Kai barely felt it anymore.
