A/N: Thank you so much for requesting!! I wrote this all in one sitting, lol I was suddenly hit with inspiration. I hope you like it!! Also, I hope this comes off as a poly relationship. I’ve never written one before, but I tried!
Word Count: 3,059
Warnings: Always cursing lmfao
It was wrong. You could feel it. You knew what you wanted. But it was wrong. You scolded yourself over and over. This had been going on for months. Far too long and more than you’d like to admit.
“I shouldn’t want both of their scents in here,” you groaned, flinging yourself into your nest.
After the nesting conundrum that took place in your apartment just seven short months ago, your everything had changed. Kirishima had become a very big part of your life. After scenting him to spite Katsuki during a fight, he now seemed determined to win you. Even if he didn’t notice. Eijiro basically lived in your house now.
He made you feel safe. His scent soothed you in just a whiff. You almost felt like you were falling in love all over again. You didn’t love Katsuki any less. But you were falling in love with Eijiro. You wondered if maybe you’d always been. He was so easy to fall in love with, after all.
The intrusive thoughts you’d had about your new house guest had been growing. Before, they were peppered in. Just an occasional thing. Easy to brush off. But now you’d been properly fantasizing about how he tasted. About how his hands would feel against the skin that only Katsuki and yourself had ever touched.
You wondered how he’d fit in with your family. How they’d react to you having not one, but two Alphas. You wondered if you were being greedy, wanting them both. But you did, vehemently so.
This was not good.
How could you explain that to your mate of a year and a half? The man you’d been talking about marrying? How could you tell him that you were still head over heels for him - while also loving Kirishima the same way? What would he even think about that?
“I could never ask Katsuki….” you muttered. “He would never….”
But the fact that your boyfriend had had a little crush on Kirishima was never a secret. Not to you, at least. He claimed it was because they were best friends. But you didn’t act like that with normal friends. Maybe Katsuki wouldn’t be opposed….but would he be willing to share an omega? That was the kicker.
Alphas were possessive. They wanted what they wanted, and who was theirs was theirs. The two had been at each other’s throats over you. Alpha vs Alpha. Could you really ask them to share you?
Kirishima was a near permanent fixture in your home now. He had never been in the way. In fact, it felt like a piece clicked into place. Your home had felt brighter and been filled with more laughter. Everything was amazing - when the two were behaving.
But the tense air between the two alphas was choking. There were times they both let their guards down. Times when you already felt like you had a dynamic. Those times were amazing. You leaned on Katsuki and Kirishima cuddled against you. Katsuki and Eijiro would act couplely, even when they hadn’t meant to. You wanted to just smother them both in kisses.
But you couldn’t.
What were you going to do?
You groaned loudly and threw a pillow at the door. A burst from your quirk made it hit harder than you intended. In a flash the door was open and the warm, delicious mixed scent of Katsuki and Eijiro flooded in. They were very alert. Their eyes were wide, scanning for danger.
“The hell is going on?” Katsuki snapped. His shoulders were tense, the tendons in his neck standing out. He was a coiled snake ready to pounce.
Eijiro hesitated in the door. You caught as he stepped forward then immediately retreated. “Are you okay?”
You sighed heavily. “I’m fine. Just…having some issues. - Katsssuuuu….”
You held your arms out and he went to fill them. He kneeled and took you tightly in his arms. He hid his face in the crook of your neck. You relaxed your arms around him.
“Something isn’t right,” you muttered. Then locked eyes with Eijiro. “My nest is missing something important, it isn’t complete.”
Eijiro froze, you could see it. Every muscle tensing. His face grew red. But he didn’t break your gaze. He swirled his own pheromones in with Katsuki’s, as if testing the waters. You had a feeling he caught on. You smiled, reclining your head against Katsuki’s shoulder in response and taking in a large sigh.
You were going to have to talk to Eijiro about this later. Maybe, if you could get him on board, talk about your feelings, then it would be easier confessing to Katsuki. Maybe he’d even do it with you.
Eijiro bolted off and out of sight. While Katsuki held you tight. Your eyes lingered a moment longer on the door frame. You had wanted them both in your nest so badly. You wanted them both to hold you, to protect you, to tell you they love you. But it wasn’t that easy.
You gave Katsuki a tight hug in return. Your nerves soothing surprisingly well, despite how conflicted you were. But this was Katsuki. The last few months, he’d been verging on an Apex Alpha. He was very conscious of everything you felt. He’d some how figured out how to turn his pheromones into the most relaxing, lulling, mouth-watering mixture. You didn’t know what he’d done, but you became absolute putty in his hands in one whiff.
You always wanted to be putty in his hands. But you wanted to putty in Eijiro’s too.
Katsuki relaxed you to sleep. You’d been up early anyway. You napped for a few hours. Your dreams were laced with the most potent caramel scent. But soon, a musky, warm scent invaded. And your body felt like water. You were on cloud 9. Everything, everyone, you wanted was bottle up in those two scents. You wanted this delicious mix in your life forever.
When you woke up, you heard the TV on. Along with the faint sound of sizzling. Giving a whiff, you could tell Katsuki was cooking. You tottered out , still stumbling on your slumber legs. You smiled to yourself as you looked into the room.
Katsuki stood with a pan and an apron in the kitchen doorway. He was completely absorbed in whatever Eijiro was watching, even standing very close to where he was sitting.. The red head was sitting in the chair you’d occupied for your little tantrum. He had his knees to his chest, totally lost in whatever was on.
It was adorable.
After a minute you yawned loudly and went in. Both of their eyes snapped to you. Eijiro grinned, but looked away quickly, his face staining red again. Katsuki smiled that in love, puppy dog smile he got when he thought no one was looking.
“There’s my Omega,” Katsuki cooed. “I’m making dinner, since Shitty Hair can’t cook.”
“I can too!” Eijiro tossed back.
Katsuki rolled his eyes. “[Name] likes my food better anyway.”
They both looked at you expectantly. You felt like you shrank. You wanted to dive back into your nest. All you could think was, please don’t give me those eyes!
“I like you both,” you said, awkwardly laughing as you tried to fix your statement. “I think you both are really good cooks.”
“Osha. Whatever,” Katsuki scoffed. “Oi, you two run to the store. Get some dessert, whatever you two want.”
“But you want vanilla - something, right?” you asked, more teasing than anything.
Katsuki gave you a seductive smirk, then licked the end of the spoon he was holding. “I want anything that tastes like vanilla. The sweeter, the better.”
Heat coursed through you. Damn him. Katsuki gave you a wink then went back to the kitchen. You turned back to Eijiro. You saw his jaw clench, and his eyes take one desperate drag up your body. You’d never seen him do that before. You turned quickly, going to throw on some actual going out clothes.
Eijiro was bouncing anxiously by the door when you got back. He caught your eye then darted through the entry.
“We’re going Katsuki,” you called. “Love you, be back in a bit. Text me if you remember anything!”
“Don’t you two miss me too much,” he called back. “Don’t make me wreck the supermarket because you idiots.”
That was Katsuki for I love you too. Please be safe, I will protect you til my dying breath.
“We’ll try,” you laughed and shook your head.
“Oh, and ask Shitty Hair if he wants anything else in this. I already know what you’ll want. Fucking predictable.”
“I will. I’ll text you.”
Then you were out the door. Eijiro was waiting in the street below for you. His hands were stuffed into his pockets and his head was ducked. You’d really messed up, hadn’t you? Maybe you should’ve taken it slower….
“So,” you started, bumping his shoulder with yours. “What do you want for dessert.”
Eijiro’s eyes flicked to you then the ground. He shrugged and headed down the sidewalk. It was quiet as you walked. Tensely quiet. You hated it. Eijiro should’ve been his usual self. Talking happily about whatever. He couldn’t even look at you.
It was wrong, but you were glad to be this close to him. To his scent. Even if it was weird right now. You’d smelt that turmoil once before, months ago as you sat on his lap and scented him. Eijiro smelt like that now.
What was he thinking?
Eijiro still hadn’t said a word as you read he’d the store. He’d nearly walked into the door he was so distracted. He followed blindly by your side as you walked through the aisles.
“Uuuhhh,” you mused. Trying to think of what to say. “Do you like bed we set up for you? I know it’s not the newest mattress but -”
“What did you mean?” Eijiro asked, coming out of stupor. “About your nest?”
You were quiet. A little too ashamed to admit it out loud. What you’d meant. What you were trying to say in one longing look. You kept your eyes forward, going down one aisle then the next.
“[Name], please….it’s been bugging me all day. I have a theory, but….I want you to tell me.”
You stuttered and stumbled. Trying to put together a semblance of a sentence. He watched you and those crimson eyes, so much softer than Katsuki’s own rubies but just as gorgeous, made you nervous. You felt like a kid with a crush who’d been called out. You supposed you were, in a way.
“I,” you finally managed. “It’s hard to explain. Can you feel the exact same way about two people?”
Eijiro’s mouth flattened into a line. “I guess that depends on the feeling.”
There was something in his scent that changed then. It egged you on. Made you braver. Something that made you think he knew exactly what you were talking about.
You slowed your pace. “Can….Can you be in love with two people at the same time and love them an equal amount?”
You saw Eijiro swallow. His whole body seemed flushed. His eyes on you intently. You met them with equal intensity. Everything felt like it balanced on a delicate scale.
“That’s a very serious question,” he said, his voice a low murmur.
You nodded. “It’s a very serious feeling.”
Eijiro grabbed your wrist, tugging you a few aisles. And then there, right in between Chex Mix and the Honey Graham’s - he kissed you. You could actually feel his heart thrumming against his chest. Yours met his pace. Then quickly your mouths found their rhythm. It was hot and needy, and he tasted just like you’d expected him too. Only better.
A slight bit of shame chewed at you as you separated. You wanted this. You wanted him to be your Alpha, along with Katsuki. Honesty, Eijiro could probably teach him a thing or two about being an Alpha.
“Do you really mean this…?” Eijiro asked, and his face was more serious than you’d ever seen.
“That’s been my issue,” you muttered. “I love Katsuki. To absolute bits and I’d be lost without him. But I’ve fallen in love with you too. I love you to bits. I’d be lost without you. I’ve been happier these last couple months, and I think Katsuki has been too.
"But I’m worried. An Omega isn’t supposed to have two Alphas. I’m not supposed to love two people, not so deeply, anyway. And I don’t know how to tell Katsuki any of it. What if he thinks I don’t love him as much? What if he thinks I want to leave him?”
Eijiro chuckled, then kissed your forehead. “Who said you can only love one person at a time? And who said it was illegal to have more than one Alpha? There’s a lot of amazing people in the world. You can love as many of them as you want, with as much of yourself as you want. - Maybe it’s a bit unmanly to admit, but I’ve kinda had a thing for you both for a while. If Katsuki’s down for sharing you, having it be the three of us, then so am I. I just want you both to be happy. Even if that’s without me.”
You shook your head, you could barely stomach the thought. “I don’t think I could be happy without you both now. It’s hurts to much to think of either of you leaving. I think I’ve been falling in love you while I was also falling for Katsuki. So don’t think it’s just because you’re around more.”
“So….what do you want to do?” Eijiro was serious again. He held you closely, as if you’d always been like this. You caught as he momentarily warned an Alpha who was eyeing you up. A little change in scent was all it took for them to turn tail.
You groaned. “I don’t know. I need to tell Katsuki. If I keep this secret in, I’ll burst. And it’s not like I want to cheat on him with you. I want it to be the three of us. My two favorite people.”
“We could sit him down tomorrow, if you want. I’ll wake up early, make breakfast. And we could talk.”
You nodded, Eijiro made it sound so easy. “It’s as good as any. - Now we better hurry before he calls asking where we are.”
You two began towards the dessert section, then silence much more comfortable now.
Eijiro knocked your shoulder. “Oh, and Katsuki was right. You know? About the vanilla.”
You groaned and momentarily his your face in your hands. If things went too, you’d now have two people embarrassing the hell out of you.
You quickly fetched your desserts and the two of you went halfsies. Mostly because Eijiro left his wallet in his other pants and could only pay with what he had on him. You’d given him another kiss for how cute he was. You remembered to ask about Eijiro’s garish on the way back.
You and Eijiro were all smiles as you got back to the apartment. You worried. Would Katsuki think something was wrong? Or that something was going on behind his back? He didn’t say anything, even if he did. Dinner was amazing, as you were expecting. Every bite was an absolute thrill to the taste buds.
Maybe Katsuki should give up heroing to a full time professional chef!
After dinner, you and Eijiro offered to do dishes. It was the least you could do since Katsuki cooked. You were washing and Eijiro was drying. Katsuki leaned on the doorway between the living room and kitchen for a while.
“Hey,” Katsuki started awkwardly. The dishes were nearly done. “You don’t have to worry about cooking breakfast tomorrow, Ei. Butt dial here basically told me everything themselves.”
The plate in your hands clattered into the sink. You and Eijiro both stared at Katsuki. He didn’t look mad or anything. More amused. He held up his phone and pressed a button. The entire conversation in the cereal aisle played out, right up until the vanilla comment.
“Katsuki,” you rushed. “I promise, I still love you all the same -”
He came and pushed a gentle kiss to your lips. Katsuki’s puppy dog smile came back as his eyes bounced between you and Eijiro. He grabbed the back of Eijiro’s head and pulled him to kiss his forehead. Then left wordlessly out the door.
Eijiro put a hand on his forehead. A little grin coming. Then he laughed and grabbed you, pulling you close to him. He planted a few sloppy kisses on your cheek.
So it was a yes. Everything was fine. Katsuki wanted you both like you wanted them. There was nothing wrong with you. Nothing about this was bad. It was a possibility you hadn’t thought of, with a better outcome than you could’ve hoped for.
Later that night, after Eijiro fell asleep on you for the millionth time, you finally talked to Katsuki.
“You really don’t mind?” you asked. “About sharing me? About the three of us -”
“If I was going to be stuck with any idiots forever,” Katsuki started. “I rather it be you two than anyone else.”
You leaned up to give him a kiss. He put a hand on your cheek. That sent butterflies raving through your stomach.
“And you may have been fucking right,” he admitted hesitantly against your lips. “I….might have a stupid thing for Shitty Hair. But that doesn’t mean I’ll ever love you any less.”
You shrugged. “Lots of love to share.”
“I’m not fucking sharing you with anyone else but him,” Katsuki growled. “You’re still my Omega. And it doesn’t matter how I feel about him, if he even thinks about hurting you -”
You shushed him. “You’ll wake up Eiji.”
It took you both to carry Eijiro to your bed. You figured now was as good of time as any jump head long into this. Eijiro immediately clung to you, and Katsuki squished you in between. This felt amazing. This felt right. This is where you were supposed to be. In the arms of the Alphas, of the men, that you loved more than anyone else in the universe.