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Katsuki Bakugou was never going to admit it. There was absolutely no way that Izuku Midoriya was ever going to find out, he couldn"t. Because Katsuki kept his emotions under lock, and the key was buried deep inside, underneath layers of bone and flesh.
“Kacchan…what’re you thinking about?” Izuku looked up, the lucid green of his eyes were slowly getting eaten up by the black of his pupils. A sure sign of his impending heat.
“Nothing idiot, just focus on yourself,” he replied, with no real malice behind his words. He found it was getting increasingly harder to keep up his gruff persona with each time he helped Izuku through his heat. Every meetup, chipping more and more away from the layers protecting his deepest desires.
Izuku pouted, but didn"t comment further. He instead chose to bury his head into Katsuki’s chest, nuzzling his scent further into the blond"s flesh, and stealing his own smokey scent for comfort. Katsuki was sure that if he could smell pheromones, Deku’s scent would be amazing. Most likely a mix between something earthy and powerful. He imagines a forest after a thunderstorm, the heady smell of petrichor and lightning. He runs his fingers through soft green curls and sniffs the air, slightly disappointed with the lack of scent. Izuku hums and smothers his face harder between firm pecs.
Still, Bakugou feels so pleased with himself, how he can take care of Deku despite being a beta. How Izuku chooses him to be the anchor that grounds him during his most vulnerable time. How this powerful omega trusts him to be there, knowing that he would never take advantage of the situation, to take it further when his omega can"t say no. Despite all the wicked things Bakugou wants to do to him, he would never cross that line, because he"s not some blockheaded alpha that would succumb to basic instinct and wanton hunger. Not unless Izuku made it clear that he wanted it in turn, outside his heat. And no way was he gonna make the first move.
Even though he wants nothing more to- he shakes his head, willing away impure thoughts. He instead focuses on scratching Izuku’s scalp, which elicits a pleased moan.
“Feels good Kacchan…” and if that wasn"t just a cheap shot to his dick.
“No shit, you don’t think I don’t know all your spots?” To prove his point, he trailed his fingers under Deku"s ears and began scratching at his swollen scent glands. This had Izuku moaning out.
“Mmmmm…”
Bakugou definitely felt his dick pulse at that sound. And if he had focused more on his own body, he would have noticed that he was starting to feel itchy. Something definitely out of the norm. But he didn"t, so he kept rubbing at Deku until the omega began sinking lower towards his armpits, totally elated.
“Kacchan… mmph,” Izuku was starting to slip, his eyes totally blissed out, and Katsuki was so damn turned on. He was feeling kind of warm, which was strange. Yes he was always horny when helping Deku through his heats, but it was always manageable, he never felt hot, or had the sudden urge to rip off Izuku"s shirt and inhale his collarbone. He grit his teeth and stifled that urge real quick.
Deku noticed immediately, and nuzzled into his side with a ‘hnf’, “hey, Kacchan, something’s wrong?”
‘Yes’ he was starting to sweat, a layer protecting his longing peeling away. “No, why?” A total lie.
“You sure? You"re not mad or something?” Izuku asked, still rational despite his eyes clouding over, and a hardon pressed against Katsuki’s thigh.
“I said no, what is it?” His head felt foggy.
“Dunno, somehow you suddenly smell really strong…”
Bakugou’s skin was prickling, the hairs on his neck stood. The air around them felt a little heavier, a spark of danger. Adrenaline spiked through him, almost as if they were about to leap into battle. “What the fuck!?”
Izuku groaned and bit at Katsuki"s shirt covered side, his strong legs wrapping around his thigh to lightly grind against him. Yah something was definitely wrong, the damn nerd never made a move past some PG-13 cuddling.
“H-hey!” No way was Deku humping him right now. “WHAT THE HELL HAS GOTTEN INTO YOU?” his voice broke, but he was equal parts too turned on and too shocked to feel embarrassed.
Izuku gripped Katsuki"s side and moved to half straddle him, shoving his face into Bakugou’s armpits. “Hey!! Get off!”
Katsuki gripped at green hair and yanked back, with just enough force to make a show he was resisting, but definitely not enough to stop Deku. “What you think you"re fucking doing!?”
Izuku moaned out, clearly enjoying being yelled at, grinding harder into him.
“Seriously, what"s your damn problem?”
“You smell so good right now… Kacchan…” the perverted nerd began sniffing at his armpit, wow, Bakugou was not gonna admit how much that affected him. It was then he had a prickling sensation in his nose. Hints of an earthy musk penetrating his sinuses. Deku chose that moment to lick a long stripe from his bicep towards his armpit, “well, more than usual…”
Katsuki could not help the moan that slipped past his lips, “w-what…?”
Izuku clung tighter, holding onto his shoulder and sucking along his skin. Bakugou groaned at the sensation of that hot, wet mouth, trailing along his arm.
“Dek-” he caught himself before correcting it to “Izuku.” Even through the brain fog, he had the right of mind to call his name. They"ve moved past the days when he use to call him useless.
But it was getting increasingly harder to think, as he felt a rock hard dick slide up against his own raging erection. ‘Holy shit’ he was sure he was dying, he felt like he was going to melt from the inside out. That"s when he realized he could finally smell Izuku.
“S-stop now…” he moaned out weakly, his nostrils assaulted by the scent of a forest ravaged by smoke. A flash of damp ground after a torrential storm clashing with the molten ash of a wildfire. It was also this same time he realized that the burning smell was emanating from him. Deku grabbed Katsuki"s head and licked a warm, sloppy line along his neck to his face. Bakugou felt his whole body shudder, eyes momentarily rolling back. He was right about the green haired nerd’s scent, but he sorely underestimated how absolutely delicious it would be. His gums ached as he swallowed a mouth full of saliva.
Bakugou gripped Izuku"s arm and attempted to pull him off, his strength leaving his body, hands shaking, a futile attempt to move the sturdy body pressed so close. “This… is weird.” he huffed more earthen scent and felt the last vestiges of control slip away. The last layer of bully-turned-bestie beta Bakugou stripped, “you"re also starting to smell… like something-” and in its place, hungry, desperate alpha Katsuki stood.
Izuku was gone, way past the point of conversation, scent kicking into overdrive. The ‘fuck me’ smell pouring out of him in crushing waves. He fully rolled on-top of Bakugou, and began wholeheartedly grinding, rubbing their crotches together.
“Oh fuck!” Katsuki keened back, head hitting the pillow as he grabbed Deku"s thick thighs with his ironclad grip. The show of strength had the green haired omega preening.
“Kacchan!” Izuku huffed out, expression completely blissed out, eyes feral and black. “Do- uunngh- something! It"s too hot!”
Kacchan didn"t need to be told twice. He bucked up, dislodging the omega, grabbing his neck and roughly throwing him into the bed face down. They both shivered.
“Fucking- bastard, your scent is fucking me up!” He growled out, slotting his cock against Deku"s fat ass. Moaning at the friction, he ground down and came so suddenly and intensely that his vision whited.
His boxers were soaked, but his dick didn"t care, it hardened instantly despite just coming. Katsuki ripped Izuku’s shorts down, and immediately shoved his mouth over the wet hole. Sucking up syrupy slick, groaning from the taste and smell. He grabbed his own dick, trying to stave off another orgasm. “Fuuuuck! Look what you do to me!”
Deku had half a mind to turn on his cheek to peer over at the blond. Katsuki pulled away to stare back, slick dripping down his mouth, before shoving his thumb into the tight hole and stretching it sidesways, causing more slick to gush out.
“Mmm oh fuck!” The omega sobbed, biting his plush bottom lip, eyes rolling back, scarred hands yanking at the bed sheets, causing them to rip. Bakugou pulled down his pants, just enough for his cock to spring free. He slid it between Deku"s soft ass cheeks, which had the omega fussing in a way that made him want to shoot another load. He gripped the short hairs at the base of Izuku"s neck and pushed his face further into the bed, his other hand yanking an asscheek to the side.
Katsuki rubbed his dick from the omega’s taint to his ass hole, relishing in the impatient muffled whimpering. He did a few teasing dips inside, both of them groaning, before leaning down and licking the back of Deku"s neck and then biting down with enough force to break skin.
When Izuku cried out, Bakugou took that opportunity to harshly slide the entirety of his cock inside of the omega. They both moaned in tandom. Katsuki vision blurred, his body felt like like static, with the pleasure a pin point where they were joined. Their combined scents an absolute miasma of pheromones, so thick he could taste it in the air. He licked up some blood. And then with a growl he began moving, pulling out entirely, watching Izuku"s frame tightening, trying to pull him back in, before slamming his cock inside. Euphoria lighting up every neuron in his newly formed alpha brain.
“Mmmmfph!” Deku groaned, his body jostling with each thrust. Bakugou couldn"t take it anymore and ripped his head to the side so he could kiss him, pressing his body flush against a clothed freckled back, sparing not even a millimeter of space between them. He licked into the omega’s mouth, mapping out the teeth his tongue could reach before sucking on Izuku"s tongue. They both whimpered.
Katsuki hurried his pace, pummeling into Deku’s tight hole, knowing he would take anything he could give. The squelching sound of slick gushing out with each thrust was deafening among their laboured breathing. Izuku was so far gone that his mouth remained open with a silent cry.
Bakugou lifted off, grabbing the omegas hips to maneuver him onto all fours, pulling him violently to meet each thrust forward.
“Kaaaacchaaan!!” Izuku threw his head back, an orgasm shooting onto the sheets beneath him.
“Fuck!” Katsuki felt his dick pulsating and swelling in molten heat, the edges of his vision prickling. So this is what a rut felt like.
He managed to thrust a few more times before his knot plugged up Deku"s ass, his second time coming, seed splattering inside, causing the nerd to cry out before weakly coming again.
He collapsed on-top of Izuku before manhandling him into a side hug, burying his face into green curls and inhaling deeply to catch his breath. After a beat, when Izuku regained some sense, he huffed out a humorless laugh. Trembling lightly when Bakugou decided to suck on the newly formed bitemark on his neck.
“... Guess you"re not a beta.”
Katsuki bit the side of his freckled cheek, which made Deku tighten up, and both of them moaned. “No shit Sherlock.”
When Izuku started squirming, and the air got heavier with his cloying scent, Bakugou took it as a sign it was time to fuck again.
They didn"t leave the room until Izuku"s heat and Katsuki"s rut ended… 3 days later.
[End]