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Double Eggs

Summary:

If two alphas are able to share an omega, why not share a womb and kids?

Notes:

As promised, here I am with Double Mess's last chapter! With this chapter, the series is completed! Thank you so much for all the love, comments and kudos, I'm suuuuper happy you enjoyed this fanfic, since it was literally an excuse for writing double penetration! I hope you all have a good day celebrating our baby boy's birthday! Enjoy~~

(See the end of the work for more notes.)

Work Text:

– Levi, we need to talk. – Rivaille entered the kitchen, brushing his teeth with his towel wrapped over his neck. He headed to the coffee machine and began making his own coffee, the sweatpants he wore protecting him from the morning breeze. 

Levi, who looked at him with an arched eyebrow, followed his brother's entire movements with his gaze. The older would bet his money that this "talk" was related to Eren and, like everything involving the omega, he immediately took a more rigid and serious stance. 

During the last few months, Levi tried to bury his own feelings so as not to harm the relationship the three of them cultivated. He tried to ignore his silly jealousies and insecurities that probably affect the two alphas in that relationship. 

And even though he avoided the day the "talk" came, he knew it had been delayed for far too long. 

– About what? – The black-haired one said, watching the coffee get ready and his twin brother sit on the other side of the bench, both face-to-face and alone in the kitchen.  

Eren was absent since the boy had been increasingly tired in recent days and was resting in his bedroom. They both had been trying to convince him to go to the doctor, but the omega always shook his head and said he was already feeling better and, despite worrying about him, the alphas being alone was fundamental to that dialogue.  

– About the jealousy and insecurities you and I have over Eren. – As always, Riv was the most open with his own emotions and seemed to have no problems pointing out the whole issue that had been brooding from the moment they knew they had the same omega. 

Levi, as expected, frowned, assuming a defensive position and putting his teacup aside to cross his arms. 

– Are you accusing me of something, Rivaille? 

The blonde rolled his eyes and then gave his brother a deadpan look before speaking what he knew bothered the two in that situation. 

– No, I'm saying I know you feel bad about me being the most extroverted one, just as I feel bad about you being the most romantic one. - He admitted and Levi raised an elegant eyebrow, as he did not remember having demonstrated how much he deemed to be the one who had the most difficulty being social around Eren.  

Riv continued. 

– And if we can't stop arguing while we're both inside our omega, it means we obviously have some differences. – He was careful to emphasize the word " our ", which helped to calm the tension in the air, both alphas ready to try and snatch the lovely omega.  

There was a moment of silence when both the blond and the brunette tried to reign in the restless instincts making their blood run faster in their veins. 

– I still personally think we're doing well for two possessive alphas ... – Riv added, realizing that they both were trying to control their breathing and prevent that peaceful conversation from turning into a disaster. 

Levi huffed. 

– Yes, because wanting to rip your head off when you're inside Eren it’s completely acceptable. – He smirked while Rivaille rolled his eyes. Despite this, both seemed to let their guard down a bit with the joke and the blonde decided to take a few sips of his coffee. 

– But, in our current situation, I don't think it's that unexpected... – Riv added and this time who made a noise of agreement in his throat while taking a sip of black tea was Levi. 

Of course, it was normal for an alpha to feel possessive about their omega and two sharing one was to insure there would always be some competition to have Eren’s attention. Which wasn't such a big problem when the competition was balanced and didn't burden Eren. At that moment, the alphas’ intention was to leave things in clean waters, and although both didn’t feel the need to expose all the negative points they often saw in themselves, they needed the communication channel established. 

– I love him. – Levi, surprisingly, was the first to relax his shoulders and speak up. – He's the most perfect person in the whole world in my eyes.  – He said, knowing that Eren being perfect was one of the reasons he did not feel worthy of the boy. 

–  And I'm sure he loves you the same way. – Rivaille said, catching his brother’s surprised gaze and then smirking pretentiously. – Just like he loves me, too. – The blonde stated, because, unlike his twin, he had no problem accepting how much his omega showed them affection. His insecurity laid on the fact he would never be as successful and romantic as Levi. 

Levi opened his mouth to protest how full of himself Rivaille was, but his brother soon interrupted him. 

– Because of that, we have to shout truce since none of us is leaving Eren. – And that was as obvious as the sun shining every day. It was obvious that neither of them would give up the one who made their heart beat faster.  

– I hate you for having the same omega as me. – Levi made it very clear since he knew that, throughout their lives, they never had to share anything except the person most important to them: the omega with emerald eyes so unique and kind. 

– It's a mutual feeling, brother. – Riv agreed because he often wanted to take Eren in his lap and run away with him to some place where they could stay just the two of them, alone. And he was sure Levi had that impetus, too. 

– But if we're really human mirrors, I know you love him as much as I do. – Levi concluded, because even though they were essentially different, the 100% compatibility was real, and even though their selfish alpha nature struggled to prevail, Kuchel had raised them well enough for the brothers to not cause each other pain. 

– So much so that sometimes I question whether it's possible for all this love to fit inside me... –Rivaille muttered and the black-haired one couldn't agree more with the statement. 

– Hm.... – Nodding their heads, they let a comfortable silence arise between them, while they ate what was left of their breakfast.  

– I propose a truce. – Levi spoke again, pleased with him for being able to show his own opinion and to be able to put his emotions into display. – And when these fuzzy feelings get too big, we can sit like schoolgirls on the couch and talk about him all day.  

Riv chuckled and added. 

– And we're always going to keep this conversation open so I can know what's bothering you and vice versa. 

Levi nodded because even though he had trouble dealing with his own selfish desires, that was very fair. He soon questioned: 

– And how are we going to include Eren in this? 

The blonde then pressed his lips, this time with a more naughty connotation while thinking of how to include the omega in their agreement. 

– At night, we can talk to him and then convince him to take us in a double penetration again. – Riv offered it and that was not a proposal Levi would ever refuse, loving the feeling of having a breathless mess of Eren over him. 

Stretching his hand like in a business agreement, the businessman who lived inside Levi said: 

– A deal?  

To then have his brother shaking his hand like two children who had just made a deal about placing a plastic spider inside the rice cooker and scare their mother. 

With a smile and almost childish animation, they both returned to sit together and in silence, the mood between them settling down like the rain that relieves the hotness of a sunny day. 

That is, until the peace was broken with the sound of vomit coming from Eren's room.  The two alphas were standing in a second, grunting and going to the boy’s bedroom. 

--------------- 

– Mama, Eren's been sick for two weeks. – Levi said on the phone, exasperated and running his hands through his hair. He walked back and forth in the omega’s room, not knowing what to do while said omega was hunched over the toilet and throwing up everything he ate that morning. 

–  What is he feeling?  – Kuchel asked in a worried tone and the alpha imagined his mother stopping the watering of her plants, wiping her hands in the apron she always wore, and paying attention to her son. 

In the two years, Eren was with the twins, Kuchel started to absolutely idolize the boy, forcing him to call her mother and always inviting him to lunch on Sundays.  

And Levi, Rivaille, and Eren relationship got better and better, especially when, months ago in Eren's last heat, the three had spent it together. 

And now, after the twins sat down and talked about their feelings and situation, things were finally on the tracks and going in the exact direction. Except that Eren got sick and, for weeks, had no sign of improvement. 

– Vomiting, malaise and-what else, Rivaille? – He pulled his phone out of his mouth to ask his brother, who was inside the bathroom with Eren. It was a Saturday so the two said enough when they heard Eren vomiting again. Levi heard what his brother said from the bathroom and passed it on to Kuchel. – Riv says Eren doesn't want to eat either. 

–  Well, then take him to the hospital!   – It was the woman's obvious answer, and Levi rolled his eyes, grunting when Eren began complaining from inside the bathroom that they were “fussing over it too much”. 

– He hates hospitals. – The alpha massaged his eyes, but it had already been decided he was taking the boy to the hospital whether he likes it or not and so Levi began to open the drawers and select a change of clothes. 

Eren, by some miracle, could hear the alpha and screamed from the bathroom, his voice being heard by Kuchel on the other side of the line: 

– Mama, it's just some virus!! – And Kuchel laughed when Levi mumbled impatiently. 

– He may be right, but I'm hoping this vomit is my little grandchild saying hi. – And as if he had never stopped to think about the possibility, Levi simply stagnated in the middle of the room, surprised with Kuchel's blatant answer. 

The next instant, his pupils dilated immediately and his alpha forced a growl out of his throat. 

– I'll call you back, Mama. – And turning off his cell phone in the middle of his mother's laugh, he trotted into the bathroom and stopped when he saw Rivaille rubbing the pale omega's back. – Eren. 

He practically commanded, getting a look of Rivaille, who, in a second, realized his brother's intentions. Eren looked at the two with frowning eyebrows and a sick expression. 

– No. – He said looking at Levi and then looked at Riv to finish. – And no. 

The alphas looked at each other and, a second later, set out in motion. Levi left the bathroom door to pick up the change of clothes and the blonde helped Eren get up, as nausea and vomiting left him without strength. 

– It's no use. You have two alphas and you’re going to the hospital. – Rivaille took the reins of the situation, carrying the boy out of the bathroom and ignoring his pouty face. 

– But I don't like hospitals! – Eren complained but breathed a relieved sigh when the blonde helped him sit on the bed. Just realizing the boy's condition and slightly thinner cheeks, the alphas wondered why they even waited so long to take him to the doctor. 

Levi, however, decided not to mention the hypothesis given by Kuchel, since he didn’t want to disappoint Eren and Rivaille; it was not true and therefore caused them pain if the result came negative. 

– You've been sick for two weeks. – Levi said, handing Eren a baggy blouse and a legging for the boy to wear. Gesturing to Riv to remove Eren's sweaty pajamas, he took advantage of the little one's arms and tucked his shirt into him without giving him time to protest. 

– It's a virus! I'm not going to the hospital, Levi! – Eren screamed as soon as his head went over his shirt collar, not realizing how much his messy hair turned the scene comic. Levi rolled his eyes, putting both hands on his waist and watching Riv dressing Eren in the leggings. 

– Eren Jaeger Ackerman-Ackerman! – The older one said, and the joke made the boy giggle and cover his mouth, the two alphas letting out a small smile and already eager to see Eren healthy again. 

The distraction of having him laughing was enough for Rivaille to take the boy in his lap and follow Levi into the living room. The older alpha was already carrying Eren’s documents and the car keys. 

– Come on, babe. – The blonde said, kissing Eren's forehead while carrying him in princess style. Levi, the smartest of them, stopped by the kitchen and picked up a grocery bag, following the other two out of the apartment and hearing the omega’s tantrum. 

– No! I'm not going! You can't make me! – Eren said, shaking his legs madly and almost hitting Levi in the face as he passed by them to call the elevator. 

– Stop moving your legs, brat, you will go to the hospital. – The alpha ordered in a playful tone and Eren whimpered loudly. 

– I'm going to get an infection if I go there!!! 

Levi rolled his eyes, knowing how clean hospitals were. And by the way, if they went to the ward he hoped they would, the chance of having hospital infections was low. 

– Hold his legs, Rivaille. – Levi said when he saw the elevator door open and entered first in order to hold the doors.  

– Nooo! Bad alphas! Bad alphas!! – Eren closed his eyes, moaning piteously even though he knew that once in the arms of the twins, nothing would take him away from them. 

– To the hospital we go, princes- 

But before the blonde could finish his sentence, the elevator went down and Eren paled even more, wide-eyed as his hands flew to cover his mouth, a muffled phrase snapping through his fingers. 

– I think I'm going to- 

Fast as an eagle, Levi opened the plastic bag he had in Eren's direction and sighed as the boy continued to vomit inside it, Riv purring in order to calm the omega down. 

While the road to the hospital had been hell because of the rush hour, the entry in it was frighteningly easy, especially when, on each side of the omega, there were two alphas with equally scary and worried expressions, which made everyone in the hospital work even faster to stay on their good side. 

Eren, in turn, was in a terrible mood since his ride had upset his stomach so much that the simple scent of the twins was giving him shivers. With green eyes full of fury and two alphas fussing over him, the omega was about to get up from the chair where he sat and turn around out of the hospital. 

And he had actually told himself that the next time Levi asked how he was feeling, he would leave. He was almost wishing the alpha would say it again only for him to have an excuse for his impatience and horrible humor, but then when thin lips opened and Eren focused his eyes to hear the worry in the hoarse tone, a nurse interrupted him: 

– Eren Jaeger-Ackerman? – She asked, raising her eyes from the clipboard she was carrying and rummaging through the room to find out who the next patient was. Rivaille and Levi got up in a second, each one holding Eren's arm as if he were incapable. 

The brunette rolled his eyes, a pout on his lips, as he was guided to the nurse. The woman, in turn, looked at them confused and opened her mouth a few times when she noticed two identical alphas next to the omega. 

– Ahn... forgive me, but only close family can enter. 

The twins frowned at her and Eren said in a tone that showed how tired he was of explaining that, yes, he had two alphas and, no, it wasn’t your  goddamn  business. 

– They're my alphas. – And as if to prevent the question he knew would come and the request for documents and blablabla, the omega just twisted his neck to both sides, showing the two bite marks while the brothers smiled proudly. 

It took a few seconds for the nurse to finally process the information and, despite thinking twice about asking for a document to justify it, her 48-hour shift tiredness made her let out a resigned sigh and gesticulate to them to follow her to the doctor’s room.  

And this is where Eren was, three seconds after sitting down, his two alphas by his side while being scrutinized by the doctor. 

– Eren Jaeger? – The boy nodded and the doctor looked at the twins. – And those two gentlemen are... 

– My alphas. 

The man, different from what was expected, just hummed and wrote the information on the electronic record, as if he had seen worse than that. 

 – Okay. You’re an omega, 21 years old, and mated to two alphas, Levi and Rivaille Ackerman. Is that correct? – The omega confirmed and the doctor went on. – What brings you here, Eren? 

And, interrupting the poor boy, his alphas began to hurriedly explain what they had been noting in the omega's behavior during the weeks, pulling out an arched eyebrow from the doctor when one completed the sentence of the other in perfect sync. 

– So what you say is that Eren feels tired easily, had been sleeping excessively, showing aversion to strong smells, with nausea, constipation, and feeling short of breath? – The twins confirmed, both with their arms crossed and shaking their heads solemnly like two bodyguards next to the brunette. 

The doctor, who until then was typing the symptoms of the computer, seemed to think of something obvious and stopped writing, looking at Eren and squeezing his eyes at him. 

– You look a little pale, Eren. Do you confirm what your alphas are saying?  

Eren pouted and confirmed with his head, even if he hated to admit that he was feeling that bad and refused to see a doctor for weeks. 

Humming softly, the doctor turned to Eren, giving him all his attention and crossing his hands above the table. Eren looked at him and swallowed dry, since that was the same posture that Grisha, also a doctor, used to discipline him about something. 

– It seems to me that you have some typical symptoms of anemia, Eren. – The man said and Eren sighed in relief, prepared to take the vitamin supplements recommendations and get out of there. – I know it's a personal question, but I also need to know...when was your last heat? 

The omega then blushed red quickly as he thought of what he was doing with two dicks inside him a few months earlier and, as if instinct were to guide him, he felt cold sweat run through his forehead and hugged his stomach with both arms. 

–...three months... 

The doctor then nodded and Eren kept his head down, looking from the corner of his eyes when the man returned to write on the computer and proceeded to print the sheets that Eren would need. Stretching them across the table, Levi and Rivaille frowned at the documents, but none of the three had to ask anything when the health care professional smiled sweetly and added: 

– Considering you're sexually active... – And he noticed the proud smiled on the alphas’ faces along with a blushing Eren. – ...it’s indispensable to order an ultrasound when you have all the symptoms of a pregnancy. Please, just take this sheet to the nurse and she'll take you to the ultrasound room.  

A shaky breath was all Eren let go, before two alphas with huge smiles guided him lovingly to the examination room. 

--------- 

With his blouse raised, Eren held his fingers tightly on fabric curled up on his chest, refusing to hold the twins' hand when his were shaky, cold, and sweaty. 

With eyes fixed on one of the television rooms – this one was directly facing him as if designed to help his observation – he tried to hold on the burning feeling in his urethra after being forced to take at least six glasses of water before the ultrasound. 

It was hell, he had to say. Feeling the urge to urinate and having to hold on as someone pressed his belly down was so terrible that at times he held his breath and pressed his thighs to avoid wetting himself. 

Who performed the exam itself was a woman with an impassive face, thin and square glasses, and short blond hair. She was wearing a lab coat with the name "Dr.Brzenska", but had presented herself as Rico when the three entered the room. 

What made the situation worse was that neither she nor the twins seemed interested in talking to ease the tense mood and he could perceive the similarities between his alphas and the doctor. And to be honest, he just wanted some distraction from the anxiety he felt and the urge to pee! 

– All right. – The woman said, saying some low numbers to herself and typing something on the keyboard. Eren and the twins' eyes stuck to her when the woman paused the device into Eren's belly and took a print of the screen. – This right here... – She used a dotted arrow to trace a ball Eren saw on television. – ... It's one of your babies while this other... – And she ran the equipment quickly, not realizing the shock the omega was in. After a few clicks, one more print, another dotted arrow, and two Ackerman with shimmering gray eyes, she talked again. –... It's your other baby. 

–...what... – Eren whispered softly, eyes bulging and still glazed on the screen where two prints were exposed, two white masses pointed out on the television. Without much thought, one of his hands stretched out towards his alphas and it was soon held by two larger hands, while the other still kept squeezing the fabric of his own blouse. 

– It's rare, but considering you have two alphas... – Rico said and kept writing on the computer. Although Eren wished she could speak with a more excited tone or something, he was glad the doctor wasn't throwing information at him and was as easy to deal with as his twins. – If you look closely right here, you can see that, instead of an egg split in half, we have two distinct gestational sacs with fetuses of the size of a plum. This means that you ovulated twice at the same time and each baby is of a different egg and sperm. Considering they're both the same size, I'd say the fertilization happened at the same moment. 

Eren turned his head to look at Levi and Rivaille with eyes the size of a plate, mouth open in surprise while his mind struggled to understand. Did he ovulate two eggs at the same time? What do you mean two eggs?! And twins? From different sperm? What the hell!? 

Rico arched an eyebrow at the omega and soon after looked at the two alphas who seemed eager for more information. With a sigh and adjusting the glasses on the bridge of her nose, she continued. 

– Since two eggs were fertilized, it means the babies will not be identical twins, like Mr.Levi and Mr.Rivaille here. In your case, it’s possible that each of your alphas has fertilized an egg, but we can’t prove it since they are identical twins and share the same DNA. That means the fetuses are children of both alphas at the same time, independent of who’s sperm fertilized the eggs. 

– You mean there’s a chance of me fertilizing one egg and Levi fertilizing another? – Rivaille asked, the three ignoring the shock state in which Eren. Rico nodded and Levi soon asked. 

– But they're both still our babies because we have the same DNA and the paternity test would be positive for both of us? 

Rico nodded. 

– Levi... – Riv turned to his wide-eyed brother, seeming dazzled by the answer, but was completely ignored when the black-haired alpha seemed to stare at the television with eyes shining as if everything in his life began to make sense from that moment on.  

–... Ahn... – Eren blinked several times between his alphas’ excited questions. 

The doctor spoke again. 

– In your file, Mr. Eren, it says you've been with them since your 18th birthday. I'm surprised you were able to postpone the pregnancy for three years even with two alphas... - She admitted, but Eren just looked at her with glazed eyes, his inner omega so agitated and excited he was starting to feel dizzy. 

– Levi... – Riv poked his brother again and both twins stared at each other, haunting features opening up like the clear sky with rainbows after a storm. Even though they continued to hold the omega's hand, they both seemed lost in their own world of "we’re gonna be parents". 

While Eren, poor Eren...  

All that came out of his mouth was: " I think I'm going to throw up."  

And all three were leaving their places to help the twin’s omega pregnant with twins... I mean, did you get it? Mated with twins and carrying twins? Because Eren.exe has stopped working. 

Fucking 100% compatibility.  

 

The End  

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