Actions

Work Header

1095 days with you

Summary:

In a world where your second gender determines your life, Atsumu is lucky that his twin brother and Alpha guardian Osamu supports him chasing his dream of becoming a pro Volleyball player although he presented as an Omega. After Atsumu meets the sharp tongued, but understanding Alpha Sakusa at the All-Japan Youth Training Camp, the young Omega is quick to fall in love. But when Atsumu’s heat doesn't come as planned another problem arises. Suddenly, it seems like Osamu might not be as open to the idea of Atsumu going Pro right after school, as the Omega initially thought.

Notes:

Hello my darlings, I am back with my first Omegaverse series starring the couple Sakusa and Atsumu. In comparison to my last fic, this one will contain more serious themes like Alpha-Omega politics, Alpha supremacy, Mpreg as well as some Angst (not between the main couple). However, there will be a lot of fluff, found family and LOVE. I’m really excited for your thoughts, I hope you’ll enjoy the first chapter
(ノ´ з `)ノ

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

Chapter 1: Presentation

Chapter Text

Chapter one: How to keep your Omega healthy

Every Omega until the age of 25 is required to be part of a pack or family pack in order to be under the protection of an Alpha. Alpha’s have to provide and protect their Omega’s in accordance with the first Alpha-Omega Act. Omega’s must follow their Alpha’s orders to stay healthy and happy. A healthy and strong bond between the Alpha and the Omega is vital in order to keep their inner Alpha and Omega satisfied. If you feel like your Omega gets more anxious after spending time apart (Symptoms: souring and/or lighter scent, irritated scent glands, fatigue, digestive problems, constant fidgeting), consider the following options in order to prevent your Omega from either dropping or going feral:

  • Heavy scenting: Bathing your Omega in your scent calms them down. Let the Omega nest with your clothes so they get the feeling of your protection in their sleep. Scent their whole body daily with the scent glands on your wrist. If a stronger scent is needed, use the scent glands on your neck to scent your Omegas neck, hair and face.
  • Collaring your Omega is not only one of the legal forms of identification, but it also helps Omega’s to feel more calm and grounded since the collar applies constant pressure on the Omega’s scent gland. Furthermore, a collar is a visible form of protection, especially recommended for family Omegas that have no mating mark. Even if the Omega voices their dislike of the collar, it’s still a preferable measure to keep them healthy.
  • Another way of calming down your Omega is to tend to their instinctual urges of a safe home and a family to take care of. Consider forbidding your Omega to leave the safety of your home. Get them to follow their instincts in order to take over the carework and consider finding them a Mate to fulfill their urge to reproduce and get pupped. Some Omega’s need multiple Alpha’s to satisfy their needs which deems building a pack outside of your family’s pack necessary. Having multiple Alpha’s to care for a pack Omega also heightens the chance of pups and litters which is in accordance to the fourth Alpha-Omega Act.
  • If the aforementioned options are not enough to make your Omega feel safe, consider giving them a claiming mark on the neck. While normally used by mates, a non sexual bite mark will not only satisfy your Omega’s urges, but also makes them submissive to your Alpha. It is important to know that a family Alpha bite mark can only be overridden with a mating mark. Marked Omega’s have it harder to find a Mate since some Alpha’s are turned down by the idea of getting to claim an already used Omega. Furthermore, since the Omega is imprinted on you through the mark, they won’t be able to decide on a mate themselves. It is essentially your duty to help your Omega find an appropriate mate who takes care of them.

From the book: On being an Alpha. How to take care of your Omega according to their biology and the law

 


 

The day Atsumu presented as an Omega, was a dark day. It had been shortly after his first spring tournament with Inarizaki where they managed to place fifth. Osamu had already presented half a year earlier, slowly growing into his second gender and taking over the role of the caretaker of the family. As the law mandated, every family that contained at least one Omega or Alpha, needed a dedicated head Alpha. Their Alpha father had abandoned them when Atsumu and Osamu were still pups, their beta mother raising them alone. Until their presentation, their mother was responsible for them. But as soon as Osamu presented, he had to take over the role of the head Alpha. And while Atsumu was the older twin by seven minutes, since Osamu presented first, he was legally head of the family. At this point, Atsumu had been sure that his Alpha presentation would soon follow.

Following Osamu’s presentation, Atsumu had sulked for a few days, but as soon as he had seen how much paperwork Osamu had to work through, he stopped his complaints in an instant. The week that followed the Alpha had cooped himself up in his bedroom, trying to get his newly developed urges under control. As mandated, their mother had officially changed Osamu’s status at the Second Gender department. Not a week after, the paperwork had been delivered to their home.

Atsumu and their mother were prohibited from reading it as it only concerned the head Alpha, who had to decide which information he wanted to share with his pack. That reading about all the rules, that he had to follow in order to accordingly care for his family, had been hard, was an understatement. Everyday, Osamu woke up with red rimmed eyes since he tried to comprehend what was expected from him, trying to memorise every regulation and duty until the middle of night.

Suddenly, he was the one responsible for his small family pack. He was the one to sign contracts, he had the last say in the decisions concerning his mother and twin brother. But he was also responsible for the wellbeing of his pack. And Osamu took Atsumu’s and his Ma’s wellbeing very seriously. So he read. He read a lot. With the help of Rin, who he started courting shortly after he presented, he tried to get through all the mandatory and recommended paperwork of the government including additional books specifically designed for head Alphas.

Osamu wanted to be prepared for every possibility. While yes, Atsumu could stay a beta like their mother, since their father was an Alpha, there was a high chance that Atsumu would present as either Alpha or Omega. And while everybody, including himself, already thought that Atsumu would follow his own Alpha presentation, Osamu still researched the first steps of what he had to do if Atsumu presented as an Omega. In retrospect, both Atsumu and Osamu were glad that Osamu had taken so much time to read up on all the provided material, because the days that followed Atsumu’s presentation were hard on the twins.

At first, Atsumu just felt like he had a cold. His body was hotter than usual and he was sluggish during training, constantly sniffling since his nose clocked up, so Kita-san had sent him home with a small care package, which surprisingly made Atsumu cry like a small child. In hindsight, this should have been the first clue that his hormones were starting to act up. 

At home, he made himself some camomile tea in order to calm down his grumbling stomach before he laid down in his bed. But Atsumu was unsettled, he tossed and turned around his bed like something was missing. So he got up again, something drawing him to his brother's room. Firstly, he only stole Osamu’s blanket before he returned to his own room. But soon after a second trip followed, and Atsumu took every single pillow he found on the Alpha’s bed. 

But it wasn’t enough.

Atsumu restlessly roamed the house, his instincts screaming at him to get more soft pillows and blankets into his bed. So he raided his Ma’s bedroom and additionally took all the couch cushions with him. He organized everything he got on his bed in a daze, before he was content with the small nest he created. His body slowly relaxed as his instincts took over, finally feeling safe enough to calm down. It didn’t take long before Atsumu fell into a deep sleep.

He was roused hours later as Osamu barged into his room with a bowl of soup in his hands. The Alpha instantly stopped in his tracks, taking in the nest on the bed and sniffing the air.

“Oh Tsumu, ya got yer first heat,” he sighed as the sweet scent of his brother permeated the air.

No, that couldn't be. Atsumu was going to present as an Alpha, like his scrub of a brother did. But as Atsumu sat up, looking at the nest he had created a few hours prior out of pure instinct, his stomach dropped. He shivered as panic settled in. Combined with the upcoming wave of his heat, Atsumu started to sweat profusely.

“No, Samu, nonono!" he wailed. “I’m not an Omega, that can’t be possible.” Another tremor shook his body as an intense pain shot up from his groin to his stomach. Instinctively he clutched his belly with his hands, body curling into a tight ball. At this moment, Atsumu felt like his life was over. Writhing in pain, he saw his dream of being a professional volleyball player slowly drifting out of his reach.

Without a second to spare, Osamu placed the bowl on Atsumu’s desk before he crawled into the nest, pulling the freshly presented Omega close to his chest. He started releasing his calming pheromones, trying to comfort his brother. Atsumu looked so small as he trembled in Osamu’s arms, wailing in pain. In this moment, Osamu swore that he would protect his brother as best as he could. He would do everything so that Atsumu would live a happy and healthy life, no matter the consequences. Even if he had to make some decisions that Atsumu would despise. 

“What about Volleyball?” the Omega sniffled after his first heat wave subsided. 

Osamu simply held Atsumu’s body closer, stroking his sweaty hair to provide the Omega as much comfort as possible. “Everything will be okay Tsumu, yer still a fucking incredible setter, yer being an Omega ain’t changing that. And I’m not …” he swallowed hard “I’m not gonna force ya ta quit volleyball, alright? Imma support ya as much as I can Tsumu, so uh stop worrying and focus on getting through yer heat.” he awkwardly petted Atsumu’s head who had stopped crying and slowly drifted back to sleep.

While Atsumu slept with the comfort of his family's Alpha scent, Osamu tried to figure out his next step. He had to inform the government and the school of Atsumu’s presentation. They had to get a doctor's appointment to discuss heat suppressants, scent patches, and (Osamu had to cringe at the thought) contraceptives. And, he had to start scent marking his brother in order to keep him safe until he got him scent patches. What Osamu didn’t expect, that it was incredibly hard to find Omega scent patches that were suited for the application during physical work. In the first weeks, the twins had learned it the hard way that normal Omega scent patches would fail as soon as Atsumu started sweating during practice. But the medical grade sport patches were far more expensive. Soon, the expenses piled up on top of each other, and their Ma started to struggle with the additional costs of the suppressants, contraceptives and medical grade patches.

And while Osamu was just in his second year of high school, he knew that he had to find himself a job in order to support his Omega brother and his Ma. Because he was the head Alpha, he had to provide for his family.

A week after Atsumu’s presentation, Osamu started working in a small, family owned restaurant after volleyball practice and on weekends that was located close to school. He kept the real reason a secret from Atsumu, instead telling him that he always wanted to work in the kitchen, stating that it was his dream. While it was true that Osamu loved to cook, and it had been his hobby for years at this point, he definitely hadn’t planned to start working that soon. But they needed the money, and it was in his Alpha to be the one to provide. He even kept it a secret in front of Sunari, not wanting to look weak in front of the other Alpha.

After the scent patch debacle, Osamu went to the next bookstore and bought a few Alpha-Omega guides to help him figure out his and Atsumu’s new roles. If he had to provide and protect his family pack, he was gonna do it the right way.

 


 

Certificate of Protection

Hereby, we, the department of Alpha and Omega affairs, declare that Atsumu Miya, male, Omega, stands under the protection of Osamu Miya, male, Alpha, until he reaches his 25th birthday, or is being claimed and mated by an Alpha who officially takes over the protection. With his presentation, Atsumu Miya is part of Osamu Miya’s family pack. Osamu Miya is in his right to override the decisions of Atsumu Miya, if he deems them a threat to the health of the Omega and his ability to reproduce. Simultaneously, Osamu Miya has the obligation to protect the purity of his Omega Atsumu Miya. 

Both the Alpha Osamu Miya, and the Omega Atsumu Miya must fulfil their duties in accordance with the guidelines of the Second Alpha-Omega Act in order to take their rightful place in society as full members. If the Omega Atsumu Miya fails to comply with the law, his Alpha Osamu Miya has to take accountability for the Omega’s action. If the Alpha Osamu Miya fails to protect and provide for his family pack Omega, Atsumu Miya has the right to seek out a new Alpha guardian. If he fails to find a new guardian within the standard period of a week, the department of Alpha and Omega affair will provide Atsumu Miya with a legal binding guardian.

Both parties have to carry identification and legal proof of their protection status with them at all times. Both the Alpha Osamu Miya and the Omega Atsumu Miya have a grace period of a month in order to get one of the following items which are considered valid legal proof:

  • For the Alpha: Certificate of Protection, Alpha Protection Card, Alpha bracelet
  • For the Omega: Certificate of Protection, Omega Protection Card, Omega collar

Department of Alpha and Omega affairs, April 2012.