Work Text:
"You've got blood on your sleeve," the stranger said, nodding toward Atsushi's cuff. His voice was light, almost amused, but his dark eyes lingered a second too long—like he already knew how it got there.
Atsushi stiffened, quickly rolling the stained fabric under his palm. He hadn't even noticed the splatter from his last job, too preoccupied with the way the city’s neon signs reflected in the puddles at his feet.
"It’s—just ink," he lied, forcing a laugh that sounded brittle even to himself. The stranger—tall, unfairly elegant in his fitted coat—just smiled, slow and knowing, as if ink and blood were the same shade of trouble.
"Funny," the man said, stepping closer. The scent of expensive cologne mixed with something sharper underneath, like gunmetal left out in the rain. "Most people don’t blush when they lie."
Atsushi’s pulse jumped. He hadn’t blushed. Had he? Before he could retort, a voice cut through the alley’s damp air—rasp-edged, familiar.
"Dazai-san." Akutagawa materialized from the shadows, gaze flicking between them with unsettling intensity.
Dazai. The name settled like a stone in Atsushi’s gut. He’d heard it whispered in the Agency’s back rooms, always paired with words like *untouchable* and *don’t engage*.
But the man in front of him didn’t look like a ghost story—just dangerously amused, watching Akutagawa’s gloved fingers twitch at his sides.
"You’re blocking my conversation," Dazai said lightly, though his smile didn’t reach his eyes.
Akutagawa’s jaw tightened. When he spoke, it was to Atsushi. "You shouldn’t be here." There was something raw in his tone, almost protective, and Atsushi recoiled at the strangeness of it.
Dazai’s laugh was a blade between them. "Aw, Ryuunosuke. You’ll hurt my feelings." His hand brushed Atsushi’s wrist—deliberate, lingering—and Akutagawa’s glare turned murderous.
The air tasted like static, like a trigger about to be pulled. Atsushi didn’t know which of them to run from first.
Dazai’s thumb traced the pulse point beneath Atsushi’s sleeve, slow as a countdown. "Let’s get you cleaned up," he murmured, ignoring Akutagawa’s hissed curse. The alley’s flickering light carved shadows across his face, turning his grin into something feral.
Atsushi should’ve yanked away. Instead, his breath caught, traitorous and hot. He knew better than to trust a man who smelled like gunpowder and secrets, but the weight of Dazai’s attention was intoxicating—a freefall with no ground in sight.
Akutagawa lunged, Rashoumon’s tendrils slicing the space between them. Dazai sidestepped without releasing Atsushi’s wrist, yanking him flush against his chest.
"Now, now," he chided, voice dripping with mock disappointment. Atsushi could feel the hard line of Dazai’s holster beneath his coat, pressed against his ribs. "No one likes a sore loser." Akutagawa’s snarl was barely human.
The realization hit Atsushi like a bullet: Dazai was enjoying this. The chase, the fury, the way Atsushi’s heart hammered against his ribs—all of it. Worse? So was he. The blood on his sleeve had dried stiff, but Dazai’s fingers were warm where they curled around his.
"Come with me," Dazai breathed against his temple, and it wasn’t a request. Atsushi’s hesitation lasted half a second. Long enough for Akutagawa to see it—long enough to watch his face fracture into something wounded before the shadows swallowed him whole.
The alley’s mouth spat them out onto a rain-slicked street, neon bleeding into the pavement. Dazai’s grip didn’t loosen. "You’re trembling," he noted, thumb skating over Atsushi’s knuckles. It wasn’t fear. It was the adrenaline, the way Dazai’s coat brushed his thigh with every step, the promise in his voice.
Atsushi bit his tongue until he tasted copper. "Where are we—?" "Somewhere he won’t follow." Dazai’s smile was all teeth. The car waiting at the curb was black, sleek, the kind that didn’t exist in police reports.
The door shut with a hushed click. Dazai crowded him against the leather seat, knee pressing between his thighs. "Tell me to stop," he murmured, but his hands were already mapping the dip of Atsushi’s waist.
The city blurred outside the tinted windows, streaks of gold and red. Atsushi’s fingers caught in Dazai’s belt loops. He should’ve said stop. Should’ve remembered the Agency, the blood, the way Akutagawa looked at him like he was something precious.
Instead, he arched into Dazai’s touch, gasping when teeth scraped his jugular. The moan that escaped him was filthy, unforgivable.
Dazai laughed—low, victorious—and palmed the heat between Atsushi’s legs through the fabric. "Knew you’d be pretty like this," he growled. The car purred beneath them, engine thrumming in time with Atsushi’s pulse.
Somewhere, Akutagawa was seething. Somewhere, the Agency was searching. But here, in the dark, with Dazai’s mouth hot on his throat, none of it mattered.
The only truth was Dazai’s fingers, deft and cruel, and the wrecked noise Atsushi made when they slipped past his waistband.
The city lights streaked past like tracer fire. Atsushi’s hips jerked up, chasing friction, his nails biting into Dazai’s shoulders. "Fuck—" The word shattered into a whimper as Dazai twisted his wrist, calloused fingers stroking him just shy of too rough.
"Look at me," Dazai ordered, and Atsushi did, drowning in those bottomless eyes. The mafia boss’s pupils were blown wide, his breath uneven. For a heartbeat, the mask slipped—raw hunger beneath the smirk. It was the most honest thing Atsushi had ever seen.
The car swerved into an underground garage, tires screeching. Dazai didn’t pause, hauling Atsushi out by the collar and slamming him against the elevator wall before the doors closed. His knee forced Atsushi’s thighs wider, fabric straining.
"Still want to run?" Dazai breathed against his lips, thumb smearing the wetness at the corner of Atsushi’s mouth. Atsushi shook his head, dizzy with want. The elevator dinged. Somewhere above them, a penthouse waited, silk sheets and shattered loyalties.
Dazai’s teeth grazed his earlobe. "Good." The doors opened to darkness. Atsushi didn’t resist when Dazai pushed him inside, didn’t protest when his back hit the mattress.
The last coherent thought he had was Akutagawa’s voice, snarling *don’t trust him*, before Dazai’s mouth swallowed every objection whole.
Silk whispered against bare skin as Dazai peeled away layers—each button undone with agonizing precision, each inch exposed met with searing kisses that left Atsushi trembling.
He gasped when Dazai bit his collarbone, fingers twisting in the sheets. "You knew," Atsushi choked out. "You knew I'm with the Agency." Dazai’s grin was wicked as he pinned Atsushi’s wrists above his head. "And yet here you are."
The confession tore from Atsushi’s throat as Dazai’s hands mapped every scar, every shudder—rewarding honesty with bruising pleasure.
Neon from the skyline painted Dazai’s bare skin in streaks of violet and crimson, his silhouette predatory above him. "Say it," Dazai demanded, voice rough. Atsushi arched, breathless. "Yours."
The word hung between them, a surrender and a challenge. Dazai’s laugh was dark with triumph as he finally—finally—pushed inside. Atsushi cried out, nails raking down Dazai’s back, the pain and pleasure blurring into something unbearable.
Somewhere beyond the penthouse, the city burned with their choices. Here, there was only this: skin, sweat, and the terrible, glorious truth that Atsushi would do it all again.
"Look at you," Dazai murmured against his shoulder, hips rolling slow and deep, savoring every hitched breath. "Taking me so well." Atsushi whimpered, the praise igniting his nerves like a struck match.
He hated how easily Dazai could unravel him—with words, with teeth, with the filthy promise in every thrust. "You—ah—talk too much," he gasped, but his thighs tightened around Dazai’s waist, pulling him closer.
Dazai’s grin was feral. "Liar." He punctuated the word with a sharp snap of his hips that had Atsushi seeing stars. "You love it. Love being told how perfect you are."
His fingers traced the arch of Atsushi’s spine, possessive and reverent. "So desperate for approval, even from monsters."
Atsushi moaned, the words carving into him deeper than any blade. He arched, begging without words—for more, for ruin, for Dazai to shatter every last pretense between them.
Dazai obliged, hands tightening in Atsushi’s hair as he whispered filth like a prayer, each syllable a brand. "That’s it, sweetheart. Let go." And Atsushi did, screaming Dazai’s name as the world dissolved into white-hot bliss.
But Dazai didn’t stop. His grip on Atsushi’s hips turned bruising, holding him down through the aftershocks. "We’re not done," he purred, biting the shell of Atsushi’s ear as he rolled his hips again, slow and deliberate.
Atsushi whimpered, oversensitive and shaking, but Dazai only chuckled darkly, tracing the tears on his cheeks with a thumb. "I want to feel you come apart one more time. Just for me.
Atsushi sobbed, body trembling between pleasure and pain as Dazai’s fingers circled his spent cock, coaxing it back to life with ruthless precision. Every touch was electric, every thrust a promise—Dazai wouldn’t let him hide, wouldn’t let him escape the raw, unraveling truth of how badly he wanted this.
"Please—" Atsushi begged, unsure if he was pleading for mercy or more.
Dazai’s laugh was velvet and venom as he pressed closer, lips grazing the frantic pulse in Atsushi’s throat. "Please what, darling?" He punctuated the question with a sharp snap of his hips, stealing Atsushi’s breath.
"Use your words." But words were beyond him now—there was only the crushing weight of desire, the slick heat between them, and Dazai’s name on his lips like a surrender.
The overstimulation was a live wire under Atsushi’s skin, every touch bordering on pain, but Dazai didn’t relent. His fingers tightened around Atsushi’s wrist, pinning it to the mattress as his other hand stroked him with torturous precision.
"You’re so pretty like this," Dazai murmured, watching tears bead at the corners of Atsushi’s eyes. "Falling apart but still begging for more." He bit down on Atsushi’s shoulder, possessive and sharp, as his thumb swiped over the head of his cock—just once, just enough to make him sob.
Atsushi’s back arched off the bed, muscles taut as a bowstring, but Dazai held him down effortlessly. "I said we’re not done," he growled, voice rough with want.
His hips pistoned harder, deeper, chasing his own release now, drunk on the way Atsushi’s body clenched around him. The slap of skin against skin was obscene in the quiet room, each thrust punctuated by Atsushi’s broken gasps.
"Come for me again," Dazai ordered, breath hot against his ear. "Let me feel you."
And Atsushi—god, Atsushi obeyed. His climax hit like a wrecking ball, tearing through him with brutal intensity, his scream muffled against Dazai’s collarbone.
Dazai followed moments later, hips stuttering as he buried himself to the hilt, his groan a raw, unfiltered thing against Atsushi’s sweat-slick skin.
For a heartbeat, they stayed locked together, breathing ragged, the only sound the distant hum of the city below—until Dazai’s lips curled into a smirk against Atsushi’s throat. "Told you," he whispered, triumphant. "We weren’t done."
But then something shifted—Dazai’s hands, once bruising, gentled. He pulled out slowly, carefully, before collapsing beside Atsushi with a sigh, fingers tracing idle patterns along his trembling flank.
The touch was unexpectedly tender, almost apologetic. "You’re shaking," he murmured, voice softer now, stripped of its earlier edge. Atsushi blinked up at the ceiling, dazed, as Dazai dragged a blanket over them both, tucking it around his shoulders with uncharacteristic fussiness.
The silence stretched, thick with unspoken things, until Dazai huffed a laugh and tugged Atsushi against his chest. "Don’t look so surprised," he muttered, pressing a kiss to his temple that felt suspiciously like affection. "Even monsters get cold."
Atsushi hesitated—then melted into the embrace, exhaustion and something dangerously close to contentment loosening his limbs. Dazai’s heartbeat was steady under his ear, a stark contrast to the chaos of before.
Fingers carded through Atsushi’s hair, surprisingly gentle. "Sleep," Dazai ordered, but there was no bite to it now—just warmth, and the faintest hint of something like protectiveness.
Outside, the city burned on. But here, tangled in silk and each other, Atsushi let his eyes drift shut, lulled by the rhythm of Dazai’s breathing. The last thing he registered was Dazai’s arm tightening around him, pulling him closer—as if he had no intention of letting go.
Morning came like a blade—harsh, unrelenting. Atsushi woke alone, the penthouse eerily silent save for the hum of the air conditioning. The sheets beside him were still warm, indented with the shape of Dazai’s body.
A note lay on the pillow, scrawled in elegant script: *Don’t be late for work, kitten.* Atsushi’s cheeks burned as he crumpled it in his fist, the memory of last night’s debauchery crashing over him in waves.
His body ached in places he didn’t know could ache, his skin littered with bruises that told a story he wasn’t ready to face.
The Agency’s office was a minefield. Every glance from Kunikida felt like an interrogation, every sip of tea from Fukuzawa a silent judgment. Atsushi kept his sleeves pulled down, his collar high, but he couldn’t hide the way he winced when he sat, or the faint bite mark peeking above his scarf.
Ranpo’s knowing smirk over his candy wrapper was the final straw. "Rough night?" he chirped, popping another sweet into his mouth. Atsushi choked on his coffee, the heat spreading from his throat to his ears.