So this is my first time writing for the omegaverse AU style so bear with me lol
Also, if this AU isn't what you like then kindly skip it. As I've mentioned before, I don't tolerate hate of any kind.

Todoroki POV-

I'm finally on my way home from work and my phone started buzzing with a calendar alert. It's about that time again, which I could tell just from his smell. I stopped by the grocery store to pick up a few extra things that we would be needing through out the rest of the week.

The house was dark when I got inside. Which was a bit odd for Izuku, considering he preferred to have the lights on while he was home alone. "Izuku?" I went to the kitchen and put everything away in the refrigerator and cabinets. I continued through our house, sniffing the air occasionally. I caught his scent that was laced with the smell of fresh heat and followed my nose blindly.

"Izuku? Where are you at?" I began stripping as I went further through our house.

"Mmmmmm-ahhhhh... Sho-Shouto... Hurry please, I-I need you..." Izuku's voice came out from our bedroom.

I undid my belt and let my pants fall off and I stepped out of them before I even got to the bedroom. I opened the door and lost my ability to control myself. My sexy little mate was a mess on our bed trying his damn best to find some sort of relief from the pain his heat was causing.

Once his piercing green eyes met mine the atmospheres the room changed almost instantly. His eyes pleaded for me to get closer and his mouth was spewing choked back moans and and pained groans. My body shifted to autopilot taking me to Izuku. I couldn't deny him the very thing he was practically begging for.

I grabbed his thigh and ran my hand up as I climbed onto the bed, hovering over him. I was fighting with myself to remain calm and collected, My little omega had suppressed his last three heats but decided it was time to go through with one so his body wouldn't start acting up on him while out in the field.

Izuku was grasping onto me like a needy animal, "Babe, I'ma need you to relax a bit for me. You're going to throw me into a rut if you don't and if that happens, I can't say that you won't get hurt or something you don't want could happen."

I heard an abrupt huff of frustrated air, "Shouto Todoroki, I'm literally leaking slick right now! Fuck me already!" Before I knew what was going on Izuku flipped over on his hands and knees face down, ass up, putting himself on display, fully presenting himself to me. I couldn't handle it anymore.

I let out a deep growl of approval to him and my alpha pheromones seeped from me causing Izuku to mewl and purr in delight. I ran my fingers up his slick soaked thigh and pushed in two fingers, quickly scissoring them inside him.

"Sho- more... I need m-more! FUCK! Please!"

I pulled away from him making him whine. I cut the little sound off, turning it into a gasp, as I shoved my dick deep inside of his tight, throbbing hole. I gripped his hips and rocked myself deeper inside him until I completely bottomed out.

"Is this what you wanted, Pet? You want me to fuck you until you can't walk?" I pulled out and bucked back into him harshly, falling victim to his heat and my rut. "I'm going to fuck you over and over until I've made a complete mess of you and breed you like the good omega you are. Do you understand me Pet?" I could already feel my knot swelling up as I continued to fuck into Izuku relentlessly. The alpha completely taking over my usual relaxed demeanor and even my words.

Izuku mewled in delight at my harsh words and pushed his hips back to meet my rough thrusts. "Fuck me more Sho, please. I need your knot."

I slammed into his tight asshole, my mind spinning in a downward spiral. "Tell me again Izuku. Be my good little omega and tell me exactly what you want me to do to you."

"Breed me, Alpha." My mind went blank and I pushed my growing knot deeper and deeper inside of him the new pleasure caused him to cum all over the bed without warning. "Shouto, please fucking breed me, fill me up until I can't hold anymore."

I shoved my knot deep inside of him and felt it lock into place. If he changed his mind, it would be too late now. I bit down on his neck, right over top of his mate mark causing him to shudder. "Shouto, ahhh... I can feel your cum inside of me. It's so hot."

I carefully pulled Izuku down with me, trying my best not to pull at the knot inside him. He pressed his back into my chest and hummed in approval. Once the knot went down and I was able to pull out of him, I cleaned him up and changed the sheets on the bed while he slept peacefully.

I decided to take a shower while he rested. Once I got out of the shower Izuku was drenched in sweat again moaning with his fingers up his ass, jerking himself off. I of course had spent heats with him but this one seems to be far more intense than the others.

My dick was hard again within seconds of seeing the display in front of me. I immediately pulled his hands away and replaced his fingers with my mouth. I couldn't resist the vanilla and lavender scented slick pouring down his milky legs. I lapped up all of the slick I could and jerked him off at the same time. Izuku was screaming my name like a broken record as I ate my way from his ass to his heart, making him cum again.

I slapped his perky ass cheek and shoved four fingers into his dripping hole while I continued to drink up every last drop of his slick that I could manage. Izuku was a delicacy meant just for me and I fully intend on indulging myself.

"Shouto, fuck me!" His voice came out as a broken purr.

"Lay on your back baby boy. I wanna see your sexy face while I fuck you this time." Izuku rolled onto his back with his legs spread wide. I hooked the back of his knees with my elbows and slammed into his drenched hole, instantly and harshly snapping my hips back and forth.

"Fuck, you're so tight." I groaned, my eye rolling back.

Izuku purred in delight at my praise, which I loved so I began praising him even more with 'good boy', 'my good omega', 'my precious hero'. He squealed in delight at the last one specifically.

I pulled his legs over my shoulders and rock into him deeper than before. "FUCK, SHOUTO!" He screamed my name like a broken record. He came all over our chests and stomachs and slick began pooling under him. "Knot me aga-again!"

"Anything for my number one hero." Tears pricked the corner of his eyes as he came again, panting. My knot slipping farther past his rim and locked in place as ropes of semen filled him up. It was like his ass was sucking it right out of me.

Izuku's body was hyper sensitive at this point. His eyes were clenched shut as he panted and moaned every time he felt my cum shoot deeper inside him.

Once my knot went down and I pulled out of him we both shuddered at the sensation. His heat had plateaued for the time being.

The whole week continued like this; bathing, feeding and breeding my mate.

~a couple of weeks later~

"Izuku what are you doing love?" I stood at our bedroom door watching him pile blankets on our bed. He kept silent as he continued his work, sniffing the air occasionally.

"It's still not good enough." He mumbled to himself. He went to the closet and started pulling my stuff off of hangers, adding them to the pile of blankets. "Still not good enough."

He finally looked at me like he had just now noticed my presence. "Shouto, take your clothes off. I need them."

I raised an eyebrow at him. "They're dirty Izuku."

"Yes, I'm aware. But they have your scent on them very strong and that's what it's missing."

I sighed lightly, "Why don't I just come over there and scent everything for you so you won't need my clothes that I'm wearing."

Izuku looked at me a bit weary. "Um, t-that would be alright... I-I guess."

I approached him cautiously because of his strange behavior and as I got closer to the bed he seemed more tense. "I can't do it Shouto. Please stay over there." He slapped his hands over his mouth.

I stopped dead in my tracks. "It's okay Izuku." I backed up and pulled my shirt off, rubbing it across my scent glands. "Here. But you have to come get it."

Izuku nodded and came across the room to me and took the shirt from my hands. "Thank you. I'm sorry but I'm not comfortable with you so close to it."

"So I take it I'll be sleeping on the couch then?"

"NO! I-I want you to sleep with me but you can't touch it yet, it's not ready." Izuku blushed darkly as he gazed at me.

"Come closer for a second, Pet." He stepped closer and I pulled him into my chest, taking in his lavender and vanilla scent as I release my alpha pheromone to calm him down. I noticed his scent had changed slightly and that's when it hit me.

"Izuku, are you nesting?"

He froze in place with wide eyes, realizing what he was actually doing. "Does that mean...?"

I smiled widely at him and picked him up in my arms, "I think it does!" I kissed him sweetly and deeply.

Sure enough, Izuku was pregnant with our pups.

~~~

Okay so, I honestly don't even know where I was even going with this. I just had the idea and went along with it. Like I said though, I've never written anything in the omegaverse AU but If anyone wants a part 2 just lmk. Also, I cringed a bit while writing this because while I have written plenty of Yaoi smut I've never written it for this ship or AU lmao.
Signing off,
Corporals' Little Brat