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An Alpha's Mating Pack

Chapter Text

“Come back here Deku! I’m gonna kill you!”

“I’m sorry Kacchan! I was just trying-”

“I don’t give a damn what you were trying! You. Are. DEAD!”

“I’m sorry!”

Unusual though it may sound, everyone at Aldera Junior High were used to such episodes. It was a well-known fact that Katsuki and Izuku had been friends since early childhood. Once the two of them presented their dynamic, it was all but guaranteed they would form a pack. Which was part of the reason no one ever tried to bully Izuku for his quirklessness. To attack him in anyway was treated as an attack on Katsuki himself, and that never ended well. The only time Katsuki would not immediately come to the other boy’s rescue was when Izuku would get himself involved in something. The only reason he wouldn’t immediately save the green boy then was because “Damn it Deku! Don’t start it if you can’t damn well finish it!”. Another part was because their mothers were also very close. So, if one got involved, the other often did as well, and Mitsuki Bakugou didn’t have to show any of the respect or restraint Katsuki did when adults got involved. All the teachers and most of the other parents were terrified of that demon masquerading as a human. So, although they have been best friends for as long as either of them could remember, it wasn’t unusual for Katsuki to beat Izuku up every so often. Especially when Izuku would invade his friend’s personal space. The green boy had absolutely no sense of personal space. It also appeared to be something that he would never have. If he hasn’t learned boundaries after a black-eye, two bloody-noses, and countless bruises, there wasn’t much hope that he ever would learn them.

Even though Katsuki would beat Izuku up, the teachers never worried about him doing severe damage. Or being late for class. Which is why their teacher and the school nurse were not worried when they walked into the classroom, Katsuki furious and Izuku sporting a new bruise. It was best not to talk about it. The nurse did fortunately have some bandages on hand for the green boy.

“Alright class, as you all know, in a few weeks, we will be heading into the next school year which will be your last year here at Aldera. Now, some of you may think that that gives you plenty of time to think about your futures, but it’s never to early. Be sure you give it some thought if you haven’t already. Today however, will be spent learning about your future dynamics. Any questions before we start?”

At the class’s silence, their teacher continued.

“Alright then. Nurse Mizuki, if you would.”

Taking their teacher’s place at the front of the class, their nurse began the lecture on the dynamics.

“Now, as you all know, there are three different dynamics an individual can present as. Omegas, the nurturing caretakers; Betas, the level-headed peacekeepers; and Alphas, the protective leaders. Omegas are by far the most common dynamic, making up roughly seventy percent of the population. Statistically, most of you will present as Omegas.

The signs most commonly reported with an Omegan presentation are lower abdominal pains; especially for male Omegas as they begin developing the proper reproductive tract, and what is colloquially referred to as slick being released from the vaginal cavity in females and the anal cavity in males. You will also begin feeling incredibly aroused.

For most Betas, you will feel an overwhelming urge to organize anything and everything. Males and females both will also begin to experience abdominal pains, especially in the lower abdominal region, as the other set of reproductive systems develop. It will not be as severe as the lower fertility rates mean your bodies are not undergoing as many changes. About twenty-five percent of the population are Betas, so maybe a quarter of you will present as such.

The remaining five percent, though it is most likely less, will present as Alphas. If one of you do actually present as an Alpha, you will need to take the most care. You will feel incredibly aggressive and will want to force your peers to submit to you. This can be especially bad if there is a presenting Omega nearby. There have been several cases of rape occurring under such circumstances. For female Alphas there will also be extreme pain in the vaginal cavity as the proper intromittent organ develops.

The first signs of any presentation come from your scent glands. There have never been any cases where the scent glands have not finished developing before the full presentation begins. This means you will each have your own scent roughly six to twelve hours before the rest of the process begins. After the presentation has begun, it is very important that you stay at home for the first ninety-six hours. By then, your hormone levels will be low enough you will have regained full awareness of your actions.

This is all the basics about presenting. Each person will go through it differently, so once you notice your impending presentation, schedule an appointment with your doctor for as soon after the ninety-six-hour period as possible. This is especially important for Betas, male Omegas, and female Alphas as you may require assistive surgery to make sure everything develops properly and in the right spots. I understand this must be a rather embarrassing topic, but any questions?”

The nurse was met with a room full of blushing teens. A few of them seemed like they were unfazed, but most were blushing. The nurse decided to move on.

“Alright, let’s take a short break from the embarrassing aspects and talk about packs.

A given individual will usually have three packs in their lifetime. The birth pack which comprises of parents and siblings. You all should remember this from when your parents explained it.

 The general pack which usually form during the latter part of junior high and throughout high school. The general pack, usually just called a pack, will typically select a leader unconsciously, most often a Beta or an Alpha if there is one. A pack is about five or six members, though there are cases of non-packs and packs of ten or more.

The final is the family pack. Usually formed within a pack when a mating occurs, it is comprised of mates and offspring. While it isn’t unusual for children whose parents are in the same pack to bond, there is an understood difference, so they are not considered to be a part of the same birth pack. An important thing to keep in mind is if you decide on a mate outside of your pack. Fights can break out between packs because of outside mating. Make sure introductions are done before any mating. The reverse can also be true though. If two pack get along well, they may merge into a single pack.”

By now, the blushing had gone away.

“Ok then, let’s move onto cycles.”

The blushing returned.

“Omegas will have what we call heats. Now, there can be some individual variations and general exceptions, but they will typically occur bi-monthly for three to five days. During this time, you will feel the urge to nest. As you all are of reproductive age, there will also be the urge to find a mate and bring them into your nest to either mate you or simply cuddle and scent you. Now, be aware that being around an Alpha in rut will most likely bring about heats in unmated Omegas with the reverse also true. A heat can trigger an unmated Alpha’s rut. This is part of the reason why all heroes and first responders, must go through special classes. They must be able to identify if they are being triggered. Any of you who go on to those professions will get the actual details there.

Betas do not have cycles like the other two dynamics. Instead you will go into pseudo cycles. This means your response is entirely dependent on the dynamic of your mate. If they are an Omega, you will experience a minor rut in response to the heat. An Alpha’s rut will trigger a heat. Now for those of you who are thinking that it sounds better than having your own cycles, keep in mind that it also means your body will not start adapting to the spiking hormone levels until you’ve been mated for a while. In cases where two Betas are mated, the first one to place a claiming bite will be the ‘Alpha’ with the other the ‘Omega’. This usually triggers bi-monthly pseudo-cycles.

Alphas have ruts. Now, I won’t be able to go into as much detail on this because ruts have the most variation in how long they last and how often they hit. This is a major reason why Endeavor is the only known Alpha hero in the top twenty. An unmated Alpha will experience a week-long rut monthly. During this time, you will be aggressive and extremely territorial of anything you perceive as yours, such as your packmates. During the first three days, you will also want to exhaustively search out those of other dynamics who are unmated. The next two or three days, depending on when a potential mate was found, will usually follow one of two paths, but we will talk about that a bit later one on one if any of you present as such. It is strongly recommended to stay at home during at least the middle forty-eight to seventy-two hours when the hormones are highest.

Lastly, something you should all be aware of is that due to the low fertility rates Betas have because of their spilt reproductive systems and the inability of Omegas to impregnate others, the government has allowed for Alphas who meet a certain requirement to take multiple mates to combat the falling birth rates. The requirement is the cycle the Alpha has after taking a mate. If nothing changes in the Alphas cycle, it’s taken as a sign they can handle more, and they may take another mate. This continues until the Alpha’s cycle shortens and finishes the syncing process. Bi-monthly cycles lasting a full week. If any of you present as an Alpha, I’ll give you more details later.

Now, I’m sure your all too mortified to speak up, but any questions?”

A student tentatively raised a hand.

“Yes?”

“Aren’t there suppressants?”

“There are, but they are generally only safe to use to stop a single natural cycle or shorten a triggered cycle. Using them constantly can cause irreparable damage. Anything else?”

Again, embarrassed silence reigned.

“I’ll take that as a no. I hope you all have a nice rest of your day.”

Bidding their teacher goodbye, the nurse left the classroom.

“Now, let’s begin classes, shall we?”