XX heavy smut warning 18+ XX

Chapter 2 – Heat

He was utterly screwed.

Katsuki clenched his jaw as Izuku squirmed underneath him, grabbing at his shoulders to nibble at his neck. He leaned back on the couch and the nerd held on, clinging to him with One for All's strength as they sat up.

"Fuck!" He growled through his clenched teeth. The depth of the noise only enticed the smaller man further as he preyed over Katsuki's shaken body. Izuku bit the flesh over his jugular a little too roughly.

His mind was clear thanks to his suppressant shot, but the scene playing out before him was entirely too much even for this sharp Alpha. He must be insane! What was he thinking? The possibility of regret was fleeting with the green-haired man's scent enveloping him. Unrelenting thoughts of fucking the man clung to him. It consumed all of his good intentions. All of the boundaries he placed so neatly were washing away at that moment with Izuku here on top of him.

Izuku squirmed enough to wrap his legs around Katsuki's waist. He groaned at the hot pressure against his throbbing cock.

"Deku, what do you want!?" Katsuki asked seriously. This compelled the smaller man to look up at him.

Izuku smiled, his face flushed, and his eyes completely glazed over with heat. Katsuki could see just how lost he was to his condition. The heat had taken him completely and Katsuki was thoroughly into it. He could barely mutter those words with what little respect was dwindling deep beneath the surface. "Help me… Kacchan… it's too hot…" He ground his erection against Katsuki's and the Alpha moaned in defeat.

His control, finally snapping as he gave in, wrapping his hands under Izuku's ass. He lifted him and swung his legs over the couch and stood up with the man securely in his arms. He started walking toward the bedroom, Izuku panting and mewling with every step.

Katsuki looked down at Izuku as he approached the bedroom, "You better not blame me for this later." He growled, laying Izuku on the bed, and tugged at his clothes while he still clung to Katsuki's frame.

"If you want this Deku… you gotta fucking let go of me." Katsuki was surprised when the Omega easily released him and ripped off his own shirt. "That's a good boy," He hummed in appreciation as he took in Izuku's flushed frame and stripped off his own clothing before helping the nerd with his jeans. He knelt between his legs on the bed, looking up at him, grinning ear to ear. He ran his hands up those toned thighs of his, admiring his strength. "I bet you taste as good as you fucking look." He quietly laughed to himself.

Katsuki took in the sight below him, surprised at just how erotic the fucking nerd was. Naked and panting in need, he began to salivate. He was hungry for every inch of him. He reached out and slid his hand up Izuku's moist chest to his shoulder. He was scorching hot to the touch, further fueling his own fire. Katsuki growled as he leaned down, the scent of Izuku's pheromones pulling him in. He captured the other man's mouth in a rough kiss.

He groaned as he pressed his tongue into the smaller man's mouth, writhing as he tasted how fucking amazing he was. He began to devour Izuku's lips with long strokes of his tongue and sharp nips. "I... wanna' feel you… from the inside," Katsuki growled deeply, his words pushing through their sloppy kiss. He trailed a hand between their bodies and slid his finders against Izuku's opening, already soaking wet with slick. He gently pushed two fingers in feeling the pink of his insides.

His chest rumbled in pleasure as Izuku broke away from his mouth with a loud moan, his hips rocking as Katsuki pumped his hand, twisting and spreading his fingers to the reflexes of Izuku's tight ass.

"Damn, when was the last time you fucked? You're so damn tight, Deku." He growled against the smaller man's cheek as he worked his hand, twisting and pumping at a new angle. He grinned in victory when Izuku arched sharply against him, keening low in a lustful whine.

"N-never…" He whispered his confession between panted moans. It had Katsuki slowing down and pulling back slightly to look down at Izuku. Lust filled emerald orbs stared back at him. He sucked in a sharp breath and added a third finger to stretch the smaller man more thoroughly as his cock throbbed painfully. Why did that fact drive him so hard? It enchanted him further. He would make the man his even if he was utterly taken aback by this evidence.

"Fuck, Deku. You've gotta be shittin' me." He struggled to believe the other Hero had made it to the age of twenty-four a complete virgin, but he couldn't deny it as he pulled his hand free of Izuku's warmth. The Omega whined in confusion, clinging to his shoulders as he shifted on the bed.

"Kacchan… please… don't take it out…" Izuku whined against his neck between ragged breaths. Katsuki moved his hand to press against his thighs, spreading the smaller man's legs. The perfect angle. Just where he wanted to be. He pressed the tip of his cock against his slick entrance, glaring down at the man.

"Shut-up, Deku…" Katsuki growled and leaned on his left forearm, holding Izuku's legs open with his other hand as he pushed the head of his cock past the tight ring of muscle at his entrance. He shook with restraint as he forced himself to thrust gently into Izuku's tight heat until he was seated to the hilt.

He tossed his head back, eyes falling shut as he groaned in pleasure. The Omega's muscles would spasm around his cock, gripping him tightly. He rocked his hips, pulling a bit of his length from him before pushing it back in. Izuku's nails bit into his back as the Omega pulled him down, sealing their lips together in a messy exchange of lips and tongue.

"M-more…" Izuku panted against his lips while Katsuki growled, his grip tightening on Izuku's thigh. He was trying to be fucking gentle, but the Omega's begging had his restraint weak. He pulled back in a long stroke before snapping his hips forward.

Izuku arched off the bed in pleasure, crooning as he rocked his hips to match Katsuki's. The scent of his pheromones spiked. They flooded the air around Izuku purposefully. He smirked upon finding his sweet spot. "Oh, you like that, ah?" he asked in a low raspy tone with hints of teeth and growling as if it were almost too painfully good to speak. Izuku came back with a little whine. It was all he could muster in the heat of his passion.

Katsuki set a quick pace, releasing the smaller man's thigh to slide his hand to his bobbing erection. He curled his fingers around the hot length, pumping in time with his thrusts. He was drunk on Izuku's pheromones and already on the edge of exploding at the feeling of his soaking wet channel. He'd be damned if he came first though. Not this time. He would make him suffer what he had started, giving him what he wanted- what he asked for. Katsuki bent his head down, swiping his tongue across Izuku's nipple before biting down around it roughly, lashing his tongue against the swollen bud.

He closed his eyes as Izuku tightened around him. Liquid heat splashed against his stomach giving in to his own climax. He growled against Izuku's skin as he rode out his orgasm with gentle thrusts. It felt so good and, dare he say it, so right.

Katsuki licked the teeth marks on Izuku's chest as he leaned back and started to pull out of the smaller man. His cock still throbbing in pleasure, but he wanted to give the Omega a break, knowing his heat wouldn't subside for hours.

Izuku's legs wrapped around his hips, locking him in place as he felt a crackle of power forcing their position to shift. Katsuki landed on his back and groaned as Izuku perched on top of him his cock sinking back into the Omega's wet heat as he sat perched on top. "Oh, yeah, nerd?" he laughed and groveled over the sudden change. What was he doing? He wasn't sure, but he fucking loved every moment of it. This man was a prize and Katsuki was one for the chase.

"Let's do that again…" Izuku's husky words were followed by a rock of his hips. Katsuki groaned, complying as his cock quickly filled with blood again. The nerd wouldn't let him be kind and give him a break so he gave up and slammed his hips upwards. "Two can play at this game." Katsuki would be unforgiving and finish what Izuku had started.

Izuku opened his eyes slowly. Sleep fogged his brain for a few seconds before the memories from the night before flew through his thoughts forcing him upright in a panic. His chest heaved as he looked around, relieved to find he was completely alone.

He nervously slipped from the bed and gathered his clothes, pulling them on as he purposefully ignored his aching back. He had to leave and right now! His mind was in a complete panic. He had done something irreversible last night and remembered almost every detail of forcing Katsuki to fuck him while he was in heat.

He choked back the cry of self-loathing that built in his throat. How could he forget to take his suppressant? How could he have sex with his childhood friend? Katsuki probably thought he was a freak after last night.

Izuku grabbed his shoes and stepped out of the bedroom, trying to walk as quietly as possible through the unfamiliar apartment, heading towards the front door straight ahead down the hallway.

He dropped his shoes at the door and stepped into them. A rough voice called out from behind him. He froze in place, looking back over his shoulder.

"I wouldn't leave if I were you, Deku." Katsuki stood behind him in the hallway, still dripping with water from the shower he'd obviously just finished. He was wearing nothing but a pair of grey sweats, staring Izuku down with hard eyes.

He sucked in a harsh breath and turned to face the Alpha, his heart thudding in his chest as panic filled him. "I-I'm going h-h-home… just… d-don't come… any c-closer." He stepped back, his hand searching for the doorknob instinctively.

Katsuki's eyes lit with fire as he stalked forward. Izuku trembled as he was assaulted with the scent of salted smoke like that of a bonfire on the beach. His cheeks heated as Katsuki came to a stop in front of him. He shivered, realizing the scent was coming from the explosion master. Were these Alpha pheromones? He choked on the air, grabbing his throat as the scent made him feel uncomfortably hot.

"Are you a fucking idiot? You smell like sex… and me." Katsuki growled as he leaned forward, inhaling before he continued.

"You're practically advertising to everyone with a nose that we fucked all night." The Alpha sneered. Izuku shrunk against the door and turned to stare at the wall, every muscle in his body twitching as he tried to think of the fastest way to escape.

"Oi! Are you fucking listening? Look at me, Deku." His eyes snapped back to Katsuki's, The Alpha held his gaze as he growled low and dangerous.

"Don't misunderstand, nerd, you're the one that came onto me last night." Katsuki raised his bruised forearm and Izuku's eyes widened.

"Practically broke my damn arm when I tried to leave ya' alone. So take a fucking shower. I'm not gonna' jump you." Katsuki leaned back again, his face serious as he eyed Izuku carefully.

Guilt flooded from his stomach, fighting back tears as his hand finally found the doorknob and swiftly turned it. Full-cowling exploding in a shock of electricity around his legs as he whispered an apology.

"I'm sorry… Kacchan, " before he spun around and yanked the door open, exploding into the air from Katsuki's front door. He ran as fast as his legs would carry him. He was a coward.

Izuku crashed into his apartment, slamming the door shut behind him. He rushed to the shower and ripped off his clothes before stepping in and turning on the water. He didn't care that it came out icy cold against his flushed skin.

He breathed raggedly as he tried to mentally organize just how massively he had messed up his life. He sank to the floor as the reality of everything washed over him. He'd gone into heat; it had actually happened. He had subsequently ruined his longest friendship by forcing Katsuki to have sex with him.

He sat under the spray of water for several long minutes before he finally stood and washed himself. When he was finished, he stepped out and grabbed a towel to wrap around his waist. He needed to take his suppressants. He padded to his bedroom and pulled on an oversized All Might shirt and a pair of knee-length black basketball shorts before heading to the kitchen.

Izuku grabbed a slice of bread and popped it in the toaster, pouring a glass of orange juice before grabbing the forgotten bottle of suppressants. He caught his toast when it jumped up and swallowed it in several bites. He tossed back the medicine and washed it down. He'd never leave the bottle out of his possession again.

He grabbed his wallet and headed for the door. He had a late shift tonight, giving him some time to find his phone and shop for a few things. He cowered at the idea of buying the morning-after pill, but it was even scarier to think of being pregnant with Katsuki's child.

He left his apartment with determination. He was a Hero after all. He could live through some embarrassing shopping. His phone had been picked up by someone from the warehouse bathroom. Izuku tracked Iida down in his sector, doing surveillance from Tokyo Tower. He hoped the old class representative would live up to his reputation.

True to his nature, Iida had found the phone and held onto it for safekeeping, not knowing where Izuku had disappeared to.

"Did something happen last night?" The beta asked as he handed over his phone.

"I wasn't feeling well so I left. I must have dropped my phone by accident." Izuku smiled and shrugged. It wasn't a lie, but it wasn't the whole truth either. He felt another pang of guilt shoot through his gut.

But Iida simply nodded, understanding. "Take care of yourself, Midoriya."

Izuku smiled and jumped from the sky-scraping tower, landing with a crackle of One for All and a dull thud. He headed to the pharmacy next.

The rest of his day became a blur as he took the contraceptive, got ready for work, and spent the evening and night struggling to focus and move his aching body as he chased villains through the dark streets.

Izuku worked like a mad-man through the week, taking extra shifts and emergency calls. Whenever he wasn't working, his mind wandered to what had happened during his heat and he felt like he would break apart. He knew he needed to apologize and explain to his childhood friend, but he couldn't think of how to approach the subject or the man for that matter. He'd ignored all of the Alpha's calls since that night. He just couldn't hear his voice right now.

He ran his usual path of patrol around his sector Saturday night, dressed only in grey sweats and a thin black t-shirt, trying to work out his frayed thoughts, and too anxious to stay at home.

He'd been instinctively avoiding Katsuki's sector again and he was frustrated by his own actions. Why couldn't he just face the man? Why did his heart race every time he thought of Katsuki's snarling face? An image of the Alpha hovering over him flushed and panting flashed through his mind causing his step to falter, slipping off the ledge of a building. He barely had time to twist in the air before landing awkwardly below in a narrow alley.

A low chuckle met his ears. Izuku shivered as his heart jumped into his throat seconds before Katsuki landed next to him wearing his usual grin.

"Well, how the hell has it been, Nerd? I haven't seen you 'round." He growled in a rough tone, but Izuku caught the real tension in his words and swallowed the hard lump in his throat as he took a step back.

"Hi, Kacchan… what're you doing here?" He tried to breathe deeply to calm himself, but a faint whiff of Katsuki's scent registered in his senses. He shivered at its presence. God, he smelled nice.

The Alpha's grin widened as he stepped closer. "I came to talk. Since you've been fucking ignoring me." His truly angry snarl had Izuku snapping out of his daze. Now wasn't the time to be captivated. He finally had the chance to talk to Katsuki. He tried to straighten his back as he spoke.

"I'm sorry. I know I owe you an explanation." He spoke quickly as Katsuki watched him with angry scarlet eyes.

"You're damn right! Start with why you've been lying to me for our entire fucking lives." Katsuki's words stunned him. He'd never outright lied to the Alpha. Anger rose up to take the place of his anxiety.

"I never lied! You and everyone else labeled me on your own." He shouted at the Alpha as Katsuki stepped closer, his face twisting in frustration.

"Fine! How the fuck did you end up like that at round face's party? You've been so good at hiding your heats till now." The words cut through Izuku's anger and all his courage left him as heat filled his face in embarrassment.

"…I haven't…" He mumbled quietly. Katsuki clicked his tongue in annoyance.

"Speak up, nerd!" The Alpha's shouting had him turning back to meet his scarlet gaze with embarrassed tears forming in the corners of his eyes, a hot blush staining his cheeks.

"I haven't been hiding it! That was my first heat!" Katsuki's eyes widened and he leaned back out of Izuku's face as his face flashed with several emotions before settling on anger.

"Bullshit! You're fuckin' twenty-four, Deku! How is that even possible?" Katsuki looked at him in disbelief. It was clear in his stare. Izuku felt another pang of guilt shoot through his gut. The Alpha wouldn't believe anything even if he tried to explain.

"It doesn't matter… I'm sorry about what happened Kacchan, but can we just forget it? It was an accident." Izuku was tired and he wanted this conversation to end so he could go home and cry, but Katsuki was blocking the exit from the alley he'd landed in.

"Tch, Fine! Fuckin do what you want, Deku!" Katsuki snarled and Izuku finally stepped forward, pushing past him. He was going to run.

As he brushed past the Alpha, his hot angry scent curled around Izuku's senses. Thick, his eyes widened as he felt the flush on his cheeks spread across his face and down his neck. His heart beat heavily in his chest and his knee's buckled as heat rushed through him.

This couldn't be happening. He'd just had a heat less than a week ago. He had been taking his medicine religiously. He gasped as his mouth went dry and another wave of heat rushed through his body. A low growl rose from behind where he was kneeling on the ground and he looked back, meeting furious scarlet.

"Are you fucking serious?!" Katsuki snarled, his face was flushed, his nostrils flared as he panted. He was shaking as he clenched his fists at his sides.

"I-I've been taking my m-medicine… don't k-know what's…" He struggled to speak as his body continued to heat up. Katsuki's scent swirled around him and his mind narrowed until he could practically taste the Alpha's pheromones. He moaned as he bent over and clutched his stomach, he was too hot, it was painful.

Katsuki had been trying to talk with the damn nerd all week. He had so many questions and he wanted answers. He fucking deserved them! But the damn punk was straight-up ignoring him, he'd been stalking the border of their sectors at night. He couldn't sleep. He was constantly on edge. Deku was a fucking Omega. He was plagued with images of their heated night together and his mind swirled with thoughts.

Then he had finally appeared, racing across the rooftops well after midnight. He'd moved in the moment Deku slipped and fell into an alley, knowing he'd finally get the answers he was looking for; the nerd was trapped.

But he hadn't expected it to end up like this.

Katsuki stared down at the Omega in front of him in horror. Was this fucking real? They had just finished talking about forgetting this shit and here this fucking nerd was, going into heat right in front of him for the second time.

The sweet scent of a thick forest washed past him in waves and he struggled not to jump the smaller man. Why were his pheromones so strong? The pull of his lust surged and Katsuki clenched his fists, forcing his mind to clear with massive willpower before he was able to reach into his pocket and pull out his suppressant. He shoved the needle into his leg.

He groaned when the drug surged through his body, clearing his mind of the animalistic instincts but his body stayed hot and he grimaced. He was fucking hard.

"Shit… Deku. this isn't fucking funny." He reached out with a steady hand and turned the smaller man to face him. He bit back the growl building in his throat when Izuku's eyes met his.

The same heat glazed emerald-eyes from his dreams staring up at him. "K-Kacchan…" Izuku turned where he was kneeling on the ground, panting heavily, and reaching for his waist.

His eyes widened when the smaller man wrapped his hands around his waist and One for all crackled against his lower back as Izuku yanked him into a bone-crushing hug.

"Fuck! You're gunna break my back, nerd!" Katsuki shoved his palm against Izuku's face, pushing it away from where the smaller man had buried it against his stomach.

Izuku loosened his grip slightly but didn't let go as he smiled up at him. Katsuki groaned out loud at the image. Even with the suppressant shot, he was painfully hard. The nerd was fucking gorgeous kneeling in front of him, flushed and panting, the smaller man licked his lips. Katsuki's hand fell from his face as Izuku pressed his nose against his stomach once more and inhaled deeply.

"…you… smell good… Kacchan…" The smaller man pushed forward and Katsuki grunted as he fell back, still tangled in Izuku's grip. His mind struggled to keep up with what was happening, this was crazy. Katsuki was torn. He should push Izuku away. The nerd was just reacting to his heats, but he was so fucking strong.

He shivered as Izuku crawled up his body. One for All crackled across his skin, struggling to sit up as the Omega sat in his lap, wrapping his shoulders in a bruising grip.

"Deku, fuck, I'm not going anywhere. You can ease up, nerd." He tried to placate the Omega who was nuzzling his neck and whining in needy sighs as he ground down into Katsuki's erection.

He wrapped his arms around the smaller man's waist and tried to release a soothing scent. They were in a god damn alley. He needed to get Izuku to calm down, but he'd never tried to soothe an Omega before. Especially not one as frenzied as Izuku was. He growled out of frustration as the smaller man got even more restless.

A thick chuckle broke through the air and Katsuki's instincts spiked. He tightened his grip on Izuku, turning slightly to shield him from the unknown disturbance. He snarled into the air, smoke curling off his skin as sparks lit up in the air around him.

"Calm yourself, Bakugo." The familiar voice of All Might startled him before he relaxed, the man stepping into view.

"The fuck, old man?" He barked, embarrassed as the older blonde-Alpha stared down at him. All Might, amusement clearly shining in his sunken eyes as he took in their predicament.

"I'd heard from Recovery Girl… that young Midoriya was finally developing… and come to check up on him." The older man chuckled before coughing into his hand. "I did not expect this though."

"You fucking knew about this?!" Katsuki snarled as he tried to push Izuku off of him, but the smaller man clung tight and continued to rub against him. His pheromones spiked and Katsuki swallowed thickly as he was drowned in the sweet scent.

"It's not my fucking fault." He growled at the older Alpha as the man continued.

All Might stopped his soft laughter and his expression turned serious as he met Katsuki's gaze. "I can see that. You are unusually calm, so I can only assume you injected yourself with suppressants." Katsuki growled as he stated the obvious.

"No shit." Izuku shifted in his lap and he winced. Fuck, he was painfully hard.

"It's obvious young Midoriya has chosen you as someone he trusts to help him, whether he's aware of it or not. Heats are tough for Omega's and he's experiencing it late in life." All Might's words hung in the air and Katsuki narrowed his eyes at the older Alpha as he tightened his grip around Izuku's waist. He pulled his legs underneath him and stood.

All Might moved to the side as he stepped out of the alley. He went to take off into the air, but a hand on his shoulder stopped him. He narrowed his eyes on the older Alpha and snapped at him. "What now?!"

"I bought these as a celebratory joke… but it seems you may actually need them." Katsuki eyed the white shopping bag the older man held out and he choked slightly when he looked inside as he took the offering. Condoms, All Might had bought Izuku condoms.

"Don't get him pregnant." The serious warning had Katsuki's face exploding with heat. He exploded into the air in a blast of smoke and fire. Hiding his embarrassment as he clutched at Izuku's shivering frame, once again, headed for his apartment.

Whew! Chapter 2 down. As a warning now if you plan to keep reading be ready for the smut, and all the smut. Shout out to Mewraray for the awesome Beta-read. Leave a comment please and look forward to the next chapter!