Thread by @shadytired

#BKDK, #tiredtober, A!Kacchan, O!Izuku, dekussy, non-con, praise kink, katsuki is a bastard here lol, (more tags below)
"I just...I dunno," Izuku giggles, tucking a stray curl behind his ear. "I don't even...know how it happened, Kacchan! One second we were talking, and the next,

[c/w's continued; possessive behavior, yandere!katsuki, non-con scruffing, threats of non-con, manipulation, gaslighting, mind break (sorta?), dacryphilia]

"I thought my heart was going to beat out of my chest!" Izuku laughs happily, a hearty blush on his face.

The Omega's scent was full of rich pheromones of happiness, the smell of rich sage and pine wafting into Katsuki's mouth. The blond could never get enough of the Omega's scent. It felt like a warm hum pulling him in, holding him close, and pulling a blanket over him.

He could get lost in the Omega's scent for hours, especially when it bloomed with the smell of rich sage and fresh pine.

But now, he felt revolted. Hearing Deku, /his/ Omega, talking about another Alpha.

/Deku's crush./

Katsuki could feel the beer can in his hand crinkle and dent with how hard he was holding it, the aluminum slowly giving up under his grip, the beer sloshing around the crinkling can, rage simmering in his gut. He knew he had no say in who Deku loved, but...

Deku was /his/.

Through and through, the Omega was fucking /his./ Nobody else could mark Deku's soft, freckled neck except for him. Nobody gets the glory to see Deku's face curl into a perfect ahegao.

Nobody. /Nobody./

Not this two-bit extra Deku fawned over, not anyone. He'd rip the fucking extra apart and shove his two-bit, shitty knot down the bastard's throat and make him swallow it. He'd fucking take Deku for himself if he fucking had to.

(Katsuki had many safe houses over the country and in other countries. With his...less than legal tendencies, his parents had set up scapegoat after scapegoat for him. After all, he didn't come into this lifestyle by himself.

His father was always too calm and sweet for it to be true—Katsuki always knew there was something behind those calm brown eyes.

He was right—he had walked into his father - his calm, sweet dam - bathed in blood, their maid dead on the floor.

Their maid - a cunning, as real as counterfeit gold - was a male omega, and was as seductive as a damn wet mop, and had been relentlessly flashing and trying to seduce his dam.

Apparently, his dam had finally snapped and killed the bitch.

Katsuki was only seven, but the sight wasn't horrific to him. He was moreso curious.

At the ripe age of seven, he was introduced to the world of unhealthy, addicting obsession.)

"Deku," Katsuki growled, his tone deathly blank, the beer can in his hand leaking lukewarm beer over his white knuckles, carmine eyes sharp like blood-forged daggers. "Hm?" Izuku hummed softly, setting down his iced beer can. "Yes, Kacch-?"

Izuku choked on his words as his scruff was roughly gripped, his nerves firing off as his eyes widened, staring at the Alpha in front of him, mere inches away from his lips. "You're /mine/, Omega." Katsuki growled, "I've let you run around for far too fucking long,"

The Alpha growled, a lick of danger in his voice. Izuku could feel his skin prickle with fear, goosebumps flaring over his trembling body. Izuku stared at the Alpha in fear, paralyzed and /scared./ He had never seen this side of Kacchan before—it was so new, and so...

Fucking terrifying.

"You've had your fun, I've let you have friends, I've let you have Alpha friends who clearly want to shove you down and fill your filthy fucking cunt, and this is how you treat me?

"Falling in love with a fucking two-bit extra who probably has the knot the side of a fucking golf ball?" Katsuki hissed, the glint of Katsuki's sharp, jagged canine peeking through his raised lip. Izuku whimpered, the sound half dying in his throat as he stared at Katsuki,

jade eyes glistening with unshed tears. The burn in his eyes was almost painful, his waterlines stinging as his tears build up till there was a watery sheet over his eyes. Katsuki's image in his eyes was warping and wobbling,

but the only clear thing he could see was the dark, malicious look in Katsuki's eyes.

And fuck, if that didn't scare him to his core.

"I've had enough of you frolicking around, you dirty fucking slut—I'm tired of your bullshit. I've let you go out and fucking live life, but now your fucking mine, Deku. Got it? I'm tired of having to share you with every fucking person who wants to hold you down and fuck you.

"I'm tired of fucking fending of those goddamn knotheads every time you walk around," Katsuki sighed, shoving Izuku down onto the couch, watching the wall of tears that had built in Deku's eyes streak down his cheeks all at once, glittering like crystals in the low light.

Katsuki licked his lips, one hand still on Deku's scruff, pinching the sensitive skin between his calloused fingers, his other hand cupping Deku's wetting jaw.

Leaning down, Katsuki dragged his thick, rough tongue over Deku's cheek,

groaning softly at the salty taste bursting on his tastebuds. "See? This wasn't too bad," Katsuki hummed, placing a delicate kiss on the Omega's tear-stained cheeks. "This is where you should be, under me, /your/ Alpha. Not some other fucking two-bit extra.

"You're mine, Deku—get that through your thick skull because if you try and cause problems, me being mean will be the least of your problems," Katsuki hummed, glaring at the Omega, who started to open his mouth, which was quickly shut after a moment.

"Now, that wasn't too hard, no?" Katsuki purred, squeezing the Omega's cheeks in his hand, watching the chubby cheeks squish around his fingers. He was delighted with the soft, breathy whimper Izuku let out,

one eye closing in pain as Katsuki finally released his hold on the Omega's jaw, his hand keeping a constant hold on the Omega's scruff. "Now, are you gonna be a good boy, /my/ good boy, or am I going to have to hold you down and fuck you till you submit?"

Katsuki hummed, glaring at the shaking Omega under him. Izuku nodded wordlessly, a bubbling sob dying on his kiss-swollen lips. Ah, ah...Use your fucking words. Or are you too much of a dumb slut to do so?" Katsuki hissed,

leaning over the Omega till the lamp light peeking over the couch was blocked out. "I..I-I'll be...a good boy..." Izuku whispered, his voice dying with each word he spoke, terror and resignment burning in his throat. Katsuki hummed,

moving his knees till he squeezed Izuku's delicate hips between his, keeping the Omega still and placid. "Now, I'm gonna let go of your scruff, and if you even think of screaming, well...

That wouldn't be good, Deku," Kacchan mumbled, the blond's calloused thumb tracing his soft jawline in gentle, threatening strokes. "O...Okay.." Izuku mumbled, his bottom lip quivering gently as he felt his nerves fire off rapidly,

making him whimper and arch into a painful arc after his scruff was let go. The Omega whined, feeling Kacchan's arms hold his back, warm hands carving soft strokes up and down his bent spine. The pain of being scruffed by someone who wasn't family or a mate was awful,

making Izuku's skin break out into a painful cold sweat, his face scrunched up in pain.

After a moment of the pain flaring in his body, creeping over his tender skin like fire eating away at dead bushes, Izuku collapsed into a boneless heap,

panting and wheezing out painful breaths. "Awe, that hurt?" Katsuki chuffed out, a dangerous flit to his cooed words. "Don't worry, baby. It won't hurt after I do this," Izuku could hardly think, his mind processing Katsuki's words at a snail's pace,

eyes widening as a sinful wave of unfiltered pleasure ran through him. His back bowed once more, little a-cup tits squishing against Kacchan's solid, chiseled chest as his scent gland was punctured.

Izuku could hardly feel anything under the ripping pleasure running through his veins, eyes wide in shock and horror as his mouth opened into a curving silent scream. Izuku could feel the fangs sunk deep into his scent gland pump,

claiming venom into his gland pouches, mixing with the scent oil in there.

Izuku could feel his body react to the bond, feeling it snap into place with a thundering clap, an unwanted orgasm tearing through his bones and body as his

face slowly morphed from abhorrent to the perfect ahegao, eyes tearing up as he whimpered and ground his hips into taunting, twisting circles. "Fuu..nhgmm.." Izuku whimpered, his body sensitive to every taunting twist and tease of Kacchan's hands on his body,

the strong Alpha guiding his aching body down to the couch, grinning against his neck. Izuku whined and cried softly, his mind melting into jumbled mush as the Alpha filled his slowly swelling gland pouch with potent claiming venom, his body a jumbled mess of pleasure and pain.

Izuku whines softly, eyes glistening with tears as his hips rubbed gently before Kacchan /finally/ pops away from his scent gland, strings of bloody saliva drooling from his jowls, a look of satiated madness curling on the Alpha's apathetic face.

"There we go, now if you act up, it won't hurt when I scruff you. Can't say the same about when I fuck you, though, as long as you don't test my damn patience, Omega," Kacchan huffed, brushing their noses together as Izuku nodded wordlessly,

his tongue heavy in his mouth like iron. "Good, good," Katsuki cooed, eyes crinkling into sadistic half-moons, those dark carmine eyes glowing in the shadow cast over his hulking body by the lamp. "That's my good boy," Katsuki coos, a grin pulling on the Alpha's lips.

The praise sent a shock down his core, filling him with an odd sense of warmth that made him wriggle softly, his face scrunching up softly. "Oh?" Kacchan hummed above him, a wider grin pulling his lips. "My little Omega likes praise? You liked being called a good boy, baby?"

Izuku whimpered, louder this time, as his hips canted upward, choking a squeal when Kacchan's hard cock brushed his aching pussy, a flame of arousal scorching his body. His mouth opened in a wordless, gargled moan as Katsuki ground his cock into his sensitive,

wet pussy with taunting thrusts. "My sweet boy is such a slut, heh.." Katsuki clicked his tongue with a rough 'tch,' anchoring his squirming hips into the couch as Katsuki ground harshly against his throbbing cunt.

Izuku sobbed and whined wanton moans as he gripped Katsuki's thick wrists, tears sliding down his cheeks as he came once more, a bolt of lightning coiling up his spine. "Mghnn..." Izuku moaned gently, plush thighs twitching as his orgasm rolled over his body,

his vision bursting with galaxies behind his eyelids.

Katsuki watched Izuku fall limp against the couch, his breath unsteady and heaving as he rode the choppy waves of his orgasm, making Katsuki's dick twitch at the sight.

Fuck, he needed to fuck Deku /now/, or he's going to fucking riot. Staring down at the dolfin shorts Izuku wore, he resisted the urge to tear them off his body, but these were limited edition shorts from his parent's Omega line that he helped design.

Sure, he could always get more for the Omega, but he liked to know Deku wore /his/ work.

Just another thing showing that Deku was made for him. A good, supportive Omega wearing their Alpha's hard work.

Katsuki watched Izuku as he shimmied the Omega's shorts off, biting back his lustful groan at the smell of slick coating the inside of the shorts and Izuku's little panties, a simple black panty hugging Izuku's plush, thick thighs.

Katsuki grinned, holding the Omega down as he tore the simple panties off, saliva drooling into his mouth at the site of the cute, cherry-red cunt slathered in a wet sheen of slick. Katsuki groaned as he spread Izuku's cute cunt, eyes zooming in on the cute,

chubby clit hidden under Izuku's hood. Katsuki watched, enraptured as Izuku's cunt pulsed, little glan throbbing under his calloused thumb. "Look at this cute pussy," Katsuki groaned, growling when Deku dared to try and wriggle away, trying to close his legs with a whimper.

"W-Wai..K-Kacchan...please, we can talk a..about this!" Deku sobbed and whimpered, the dazed look in his eyes overtaken by fear, staring at him with tears in his eyes. Katsuki could feel his excitement dull, annoyance starting to grate in his mind as he stared at the Omega,

face falling into apathetic nothing. He stared down at Deku, who whimpered softly, tears starting to streak down his face in quick, steady streams. "P-Please- Ka-Kacchan..." Izuku sobbed gently—those beautiful crystal tears were no longer exciting to him.

No, now they pissed him the fuck off.

"No," Katsuki stared, his tone bland and apathetic, pulling another fearful sob out of him. The Alpha sighed, pressing down on Izuku's belly, wrenching his thighs open, even though the pitifully tried to close on him,

yet he was far stronger than Deku, whose body was weighed down by dizziness and exhaustion. "N-No, please, Kacchan-" Deku hiccups and sobs, choking another sob when his cock pushes against Deku's quivering cunt, his cockhead slathered in slick as he snaps his hips forward,

holding the Omega down as he fucks into that cute, quivering cunt. Deku heaves a hiccuped sob as Katsuki breaks his hymen, a leering smile splitting his lips. "Oh? Were you saving yourself for your Alpha, Deku? See, now you are all mine,"

Katsuki grins, looming over the sobbing Omega, little shaking feet pushing weakly at his rolling hips.

"K-Kaachan..! Pl-Please, it hurts-" Deku sobs weakly, choking sobs as his cunt clamps almost painfully around his cock,

ribbons of blood and slick collecting at the base of his cock. "Shh, it wouldn't hurt if you didn't decide to piss me off, Deku baby. If you didn't decide to refuse your Alpha access to the cunt that belongs to /him/, this would have been so much nicer,"

Katsuki growls, pulling his hips back in slow, deep thrusts, slick sounds echoing. "I would have gotten on my knees and eaten you out till you sobbed for more, then I would have fucked you reaal nice,"

Katsuki groans, snapping his jaws lightly at the feeling of Izuku's cunt squeeze and spasm around his slowly thrusting cock, "Would have gotten you nice and wet while on my knees for /you/, but you had to be a goddamn brat, huh, baby?"

Katsuki huffs, stroking Izuku's tear-streaked cheeks as he slowly quickens his thrusting. Izuku's body betrays him as his cunt slowly opens for his bullying cock, slick squirting around him, wetting Deku's inner thighs.

"You could have been my good boy, but you decide to be a fucking brat. And guess what, baby?

I don't fucking like brats," Katsuki snarled, relishing in Izuku's squeals and hiccups sobs, his thrusts becoming downright animal, thrusting till his cockhead hit Izuku's cervix,

pre-cum, and slick mixing together as Katsuki stirs up Izuku's inside. Izuku's hiccuped sobs never stop, but they slowly quiet as he feels the pleasure roar in his veins. Katsuki knows Izuku is holding back his moans—he can feel the pleasure coursing in his veins,

all through the fickle, wobbly bond that ties them together. Katsuki huffs and groans softly, his heavy, seed-laden balls slapping against Deku's taint and inner thighs, the Omega's little hands gripping at his wrists. Deku's hands quiver and shake with need and arousal,

blunt fingernails digging into his heated skin, grounding the hiccuping Omega. "K-Kaa..." Deku whimpers, eyes dewy with arousal and fear, staring up at him. "Hm?" Katsuki grunts, hands planted on each side of Izuku's small, heaving chest, carmine eyes locking with dewy jade.

"H-Hold..." Izuku whines, little hands falling off his wrists to lay uselessly against his own hands. Katsuki grunts and huffs as he momentarily stops thrusting, picking the Omega up effortlessly to settle on his lap for a moment before he flops down sideways.

Deku now lays sandwiched between the couch cushions and his lumbering form, one shaking leg thrown over his hip as he holds the Omega close, staring into the Omega's glossy eyes, starting a quick, fast thrusting pace that shakes the couch.

Deku chokes a squeal back, barely succeeding as little hands grip his black shirt. Deku's head digs into his neck, harsh pants puffing against his scent gland and sweating skin. Katsuki grumbles and moans low and roughly,

holding Izuku's squirming hips as he fucks the Omega who falls victim to his baser instincts, the fear and reason they were in this situation stuffed away in a little box as Deku's inner Omega took over. Katsuki huffed softly, cradling Deku's head as he petted Deku's unruly,

sweaty hair. "You gonna be a good for me now? Because I'm not against leaving you high and dry, Deku," Katsuki threatened, thrusts steady and hard as the Omega's little body shook with each thrust, little a-cup tits bouncing under his shirt,

barely contained by his little bralette. "Y-Yussh...!" Deku squeaked, choking on a feverish moan as he hit Deku's good spot, a grin slicing Katsuki's face once more. "Good," Katsuki groaned, holding Deku's hips as he thrust up hard, drool starting to gather on his barbed tongue,

knot starting to pump full with each bullying thrust, popping in and out of Izuku's quivering cunt.

"Now, fucking take my /goddamn/ knot, you fucking slut-" Katsuki snarled loudly in Izuku's ears, holding the Omega's hips to his own,

knot popping in, locking with a loud, squishing squelch as Deku came, a squeal echoing as the Omega sobbed, burying his face in Katsuki's scent gland. His head was trapped against the couch and Katsuki's neck, breathing in the Alpha's rich, arousal-laden pheromones.

Izuku moaned weakly, feeling his cunt spasm and massage the Alpha's thick, fist-sized knot stuck in his tight, quivering cunt. Izuku could feel cum spill deep into his cunt, cockhead pushing against his bruised cervix,

a tingling feeling nipping at his fingers and toes with each rope of cum filling him up. Izuku could hardly think, his inner Omega laying in a pleased puddle of sated Omega, his gums starting to ache with each inhale he took.

The Omega's dewy eyes were barely open, fluttering open and shut with each deep, quivering inhale he took. Kacchan's scent invaded his nose, the rich smell of wood smoke, smoked caramel, and chili pepper soothing his bumbling nerves.

Izuku couldn't resist feeling his claiming fangs - small in size but sharper than Alpha's teeth - drool with potent claiming venom, maneuvering his face just right to latch onto the Alpha's scent gland and break the thick, oil-slick skin.

Izuku could feel Katsuki's pulse quiver against his drooling lips, the Alpha's gravelly moan reverberating in his chest. Izuku broke away after a moment, laving kitten licks over the quickly healing bite,

snuggling deeper into the Alpha's embrace as he finally let sleep take him as the bond snapped together.

Izuku allowed himself to fall deep into the pit of nothing that sleep was, fleeing from the reality he lives in.

He hopes it's better when he wakes up, and this will all be a nightmare conjured by his wide, boundless imagination.

(He knows it is not, but allow him to lay in the delusions of peace for a little while.)

-
end. yknow...im seeing a theme with my tiredtober week....lotta yandere katsuki lol and non-con BAHAHA

that's today's fic!! hope u enjoyed!

a tip would be greatly appreciated! I'm saving up to buy Christmas presents for my fam!! ko-fi.com/shadytired