We're Just Friends! (Omega!bakugo x alpha!reader x omega!Izuku) pt. 4/5
Pt 1 // 2 // 3 // (to b linked)
Lore: Once an Alpha reaches 21 they get their first rut, they’d either already have their mates or the rut will act as a push for them to get together and bond.
Summary: Reader and Katsuki have been friends for years, and everyone expects them to get together, until reader rescues an omega that lives in their building, and things get a touch more... complicated
“I think we should move in together, as a trial ya know! See how things go?”
“There’s no way I’m moving into your shitty fucking apartment, Deku.”
The three of you were on the couch in your apartment, you were stuck in the middle, literally, with Katsuki’s head on your shoulder and Izuku’s legs thrown over your lap. It was uh… interesting! That was for sure! You’d kissed Katsuki without thinking after he’d agreed, and tripped over yourself apologising once you’d realised what you’d done. He’d told you to shut the fuck up and had then pulled you back in, and everything seemed to fall into place. Then you’d texted Izuku saying Katsuki had agreed, and told him to come over so the three of you could talk. It… could be going better, truth be told.
“Izuku, would you be open to staying here? The three of us can stay in my room, I think that’s more of a neutral ground?”
“Oh I would love to-!” Izuku grinned, leaning forward and gently grabbing your face to pull you into a kiss. You had to pull away when Katsuki growled, although it turned into a purr when you quickly pressed your lips to his. This wasn’t going to be easy, was it?
Moving Izuku’s stuff in had taken most of the afternoon, and Katsuki had insisted on moving some of his clothes and blankets into your room too. You didn’t really get it, but you were just trying to make this go as smoothly as possible. For the moment, however, it was peaceful. Katsuki was cooking dinner, he’d threatened to only do it if you were in there with him, so you were standing behind him with your arms wrapped around his waist and your head on his shoulder. Izuku was in the shower, and Katsuki was using every ounce of willpower to not completely melt under your touch, especially when you’d let your nose brush against his scent gland. You had no idea what you were doing to the omega, the content feeling that filled your being emptied your mind of anything except Katsuki’s warmth and how perfectly he fit against you and you really should have done this sooner, shouldn’t you?
“Wow Kacchan, that smells great!” Izuku entered the kitchen, and Katsuki was too calm to do anything but let out a half assed growl.
“How was your shower? Did you work out the water okay?” You tilted your head to look at him, he was wearing your shirt that fell to mid thigh, and you felt yourself blush as you reached out an arm.
“Yeah it was like a dream!” He chirped, wasting no time cuddling up to you, one arm going around you and the other resting on Katsuki’s waist. The blonde tensed for a moment, but it was still so comforting, he couldn’t bring himself to complain or tell Deku to fuck off.
“No, the right side has always been my side, you can sleep on the fucking left!” Katsuki hissed, trying not to wake you up. The three of you had watched a movie after dinner, (getting into a position on the couch everyone was happy with had been a struggle) and you’d fallen asleep halfway through, so Katsuki had carried you to the room, managing to not wake you up, although his attempts were futile as you stirred in his arms.
“Guys- m’tired can we just… sort it out tomorrow? Please?” You were still half asleep, too tired to even open your eyes when you spoke.
“There you go, Deku, you get to sleep on the left.” Katsuki was far too smug, and Izuku had to push down a growl. You needed to sleep, and what kind of a mate would he be if he got in the way of that.
“Fine… but Y/n goes in the middle.”
“Obviously! Like I would want your clingy ass all over me while I tried to sleep.” Katsuki snapped back, although the it lacked any real venom as he was pulling back the covers and gently setting you in the middle. You shuffled around a bit to get comfortable, letting out a purr when your mates got into bed and turning to the right on instinct. Katsuki smirked at Izuku, you were facing him! But Izuku only rolled his eyes, pressing his entire body up against yours and tangling your legs together before he threw an arm over your waist. Then it was his turn to smirk when you moved your hand down to meet his, sleepily doing your best to intertwine your fingers , and Katsuki could only huff. Still, he snuggled close to your front, gently lifting your head so his arm could go underneath it and then putting his head as close to your scent gland as he could get. Then he threw his leg over yours, and Deku’s -who was already out like a light-, and closed his eyes, feeling far more comfortable than he’d expected.
“Thank you, Katsuki, I know this isn’t easy for you.” He barely made out what you mumbled, to be honest he wasn’t even sure if you’d remember, but it had him blushing nonetheless.
You woke up to rather insistent nipping at your scent gland, so much to the point that it was slightly swollen, and Izuku was so drenched in your scent you couldn’t even tell that he was an omega.
“’Zuku what’re you… ‘s sensitive…” you couldn’t bring yourself to push him off, it felt… good- but with one last kiss Izuku was pulling away and you couldn’t help but pout.
“C’mon Y/n! We’ve got class, I don’t wanna find out what Mr. Aizawa is like when he’s mad!” How was Izuku this awake in the morning?
“Five more minutes- please…” You whined, burying your face in Katsuki’s shoulder to try and block out the light.
“Nope, we gotta get breakfast on the way, and I need to scent you before we go, plus you need to get dressed!” God he was persistent, and you were surprised how easily the omega hauled you out of bed, seriously- he has to work out, right?
“Alpha, c’mon, please!” That had you wide awake, and judging from the way Izuku grinned at you the omega knew exactly what he was doing.
“Fine, but you owe me.” You groaned, although you went over to your closet to pick out an outfit even as you grumbled, glancing back at Katsuki occasionally. How the fuck was he still fast asleep? You’d have to leave him a note.
“Okay, you ready to go?” You zipped up your backpack, hefting it over your shoulder before you turned to Izuku.
“Almost, I want to scent you before we go, so people know we’re together.” He mumbled, eyes fixed on the ground and you almost dropped your backpack as a flush spread over your face. You didn’t think you’d be hearing that today, and it wasn’t a question, the way he stated it made a shiver run through you. It made sense, though, you were still unmarked, and your scent drenched him so heavily he smelled like an alpha, it was only fair you let him repay the favour.
“O-okay- do you want me to sit on the couch-“
“Yes please.” Izuku finally had the courage to meet your eyes, he was so scared you were going to say no, but you just nodded, placing your bag on the table before you took a seat on the couch. He almost fainted when you bared your neck, although your eyes were fixed on the ground he couldn’t help the power he felt, you already trusted him enough to submit like this? He was on cloud nine.
“Thank you.” He sat right on your lap and you squeaked, your face on fire as the omega only giggled.
“That’s my good alpha, don’t worry, I’ll make it quick so we can still grab something to eat.” Izuku grabbed your wrists, and you had to bite the inside of your cheek to stay pliable for him, especially when he brought your wrists up to his neck, humming quietly as he rubbed them over his scent glands. Soon your scent was completely mingled with his, but that wasn’t enough, and Izuku leaned forward, pressing a kiss to your scent gland before he rubbed his scent gland directly over yours. Your vision blacked out for a second, and you couldn’t hold back a whimper as he pulled back, finally satisfied and pressing a kiss to your lips before he got up, offering a hand to you.
“There! Now everyone will know who you belong to!”
“Congratulations bro! Bakugo told us everything that happened!”
“So when’re you gonna like- you know- your birthday is less than a week away!”
“Oi! I told you to shut the fuck up with that bullshit!" Your friends bombarded you with questions the second they saw you, and Katsuki was already fed up with their enthusiasm, especially after they’d grilled him about it all through class.
“Oh hey guys! What happened to asking how I’m going before you bombard me and my mates with questions?” You clicked your tongue at your friends, who didn’t even look guilty, truth be told.
“Did you find the note I left?” That was directed at Katsuki, who only nodded as you pulled him into a hug, his nose wrinkling when all he could smell was Deku. Izuku was making conversation with Kiri, the only one of the group not asking inappropriate questions, and Katsuki grumbled to himself as he pulled you closer to rub his scent gland against yours, letting out a low growl when Mina and Denki cooed.
“Wake me up so I can scent you too next time, okay dumbass?” Katsuki snarled when he was finally satisfied and sure you smelt more like him than Deku.
“You’re impossible to wake up, but I’ll try!” You beamed at your mate, pressing a kiss to his forehead before you turned to your friends.
“They wanna throw us a party.” Izuku slid under your arm, his hands resting on your waist like you’d been together for years.
“No. Absolutely not.” Katsuki shook his head, and Denki let out a disappointed whine at the refusal, turning his puppy eyes to you instead, with Mina joining him.
“C’mon man, this has been in the making for years, please let us throw you guys a mating party! Please!”
“Never leave the house without me scenting you, okay? Or people are gonna think you’re just with him.” Katsuki wasn’t one for PDA, so he rushed you and Izuku home as soon as he could, pushing you down on the couch and yelling for Izuku to close and lock the door behind him.
“I want you to promise, promise me, Alpha?” Katsuki never cooed, or used your title like that, he must’ve been more upset then you thought.
“I promise, I’ll wake you up next time.” You nodded, brain completely short circuiting when Katsuki sat himself on your lap and went right to kissing your neck. Your head tilted back and your eyes fluttered closed of their own accord, your hands resting on the omegas hips and squeezing when he nipped a bit too hard.
“What about me, Kacchan?” Izuku piped up from beside you, when had he gotten there? Katsuki let out a growl at him, but ultimately just clenched his jaw and rested his head on your shoulder, taking deep breath’s until he was calm enough to talk.
“Fine, shitty deku, I’ll scent you too-“
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