A/N: There are too few ereri omegaverse fics out there. In fact, I've only ever read one, so I decided to write my own! Also, I don't know football or high school very well. Do not hesitate to point out an error, and I will fix it accordingly.

To you, the reader, if you don't know what omegaverse is, please search it up. I believe it may help you to further grasp the fundamentals of this AU.

This fic is based off a prompt I found on Tumblr.

Original Prompt:

modern/ Omegaverse AU where Levi is an alpha school gym teacher and Eren is secretly an omega pretending to be an alpha trying to get in shape for the football team so he gives him 'private' training. About a week in Eren goes into heat and forgets to take his shot that morning resulting in his hormone level being wild and Levi ends up fucking him senseless in the shower room.

Enjoy~

Friday, August 29 2014

"We only did a few drills, but you're tired already?! Are you guys even Alphas? At least run a mile without stopping, Jesus Christ!"

Shit, I got to keep myself together, Eren thought. He was in the vast field of Trost District High School (TS for short), desperately trying to keep up with the males ahead of him. The booming voice of Hanji, the assistant coach, dug into his skull but only further increased his determination to succeed. Eren was trying out for the football team, but the more drills they did the more his doubts increased. Everyone here was faster, stronger, and built. The exact opposite of him. Eren wasn't too scrawny, but not muscular. He wasn't slow at running, but wasn't very fast either. He could bench press ninety-five pounds, but that was only on a good day. So how the hell am I supposed to compete with these super humans? Even their tails were longer and more flexible.

"Okay, everyone, we're done for today. Go to the locker rooms and take a shower. Tomorrow at 1 PM, I'll post the list of who made it on my office door. Regardless of if you did or didn't, I'm glad you all gave 110%." The assistant coach smiled hugely and began to walk away. "Oh, before I forget, is Eren Yeager here?"

Eren stopped at the sound of his own name. Hanji looked at him expectantly, and pointed towards the building.

"Why are you all standing there? I said go and take a shower. Eren, hurry up."

In a few minutes, Eren was inside Hanji's office. It was quite spacious, so much so that it should be called a lounge instead. Leather couches lied perpendicular to the door. A large wooden desk sat directly in front of a huge window adjacent to the entrance. Potted plants were in every corner. It was also impeccably clean. Not a single piece of garbage or dust was in the room. Hanji motioned for Eren to take a seat on a chair at her desk. Of the many objects on the desk, there were two plaques. One read 'Hanji Zoë, Assistant Football Coach' and the other read 'Levi Ackerman, Head Football Coach'. There's a head coach? Then why wasn't he here at tryouts today…?

Eren's ears twitched nervously. "Um, Miss Hanji, why am I here?"

"Just Hanji is fine. Also, you're an Omega, aren't you?"

Eren almost didn't hear it at first. Slowly, the realization hit like a sack of lead. "Huh? W-what are you talking about?"

Hanji grinned in glee, resting her chin on interlocked hands. "I knew it! So you are an Omega! Trost District High School hasn't had one in while. But you know that only Alphas are allowed to be on the team, right? But I think you already knew that, so why'd you come?"

She knows, damn. Here goes nothing. "I love football. I live for the sport, practice every day, and follow the NFL like a religion. I know TS has one of the best teams in the area, and even though I'm not an Alpha I just wanted to see if I'm good enough. I-I understand if you kick me out now." Eren took a much needed breath.

"I see. But wouldn't being an Omega deter your desiries? Not to be rude, but you're at the bottom of the hierarchy. Alphas are undeniably physically superior."

"I get that. But I'm a hard-worker, and people say I have a lot of determination."

Silence filled the room like a dense gas. Eren looked anywhere but at Hanji, her fingers tapping against the desk.

"So Eren, do you go into Heat?"

"What?! Umm. I ah-"

"So you do. Tell me, when does it happen? How do you deal with it? Is it triggered by something or does it just happen naturally?" Hanji's voice grew more and more curious with each question.

"What does this have to do with football?"

"Oh, nothing at all. But I'm very curious, all scientists are."

"Okay, well, it…it only started a few weeks ago, so I don't know a lot. I live alone with my sister in an apartment, so there's no one to ask for help. I know I'm not the only one, but I've never met another Omega before."

"Wow, that's early. Usually, Omegas start going into Heat when they're 17-18 years old. You're what, 15?"

Eren nodded uncomfortably. Hanji noted with great interest that his cat-like ears were flat against his head and his brown tail curled around the leg of the chair.

"Um, not to be rude, but why are you asking me about this? And why didn't the guys notice I'm not…one of them?"

Hanji got up and started pacing around the room. "See, all males a specific scent that determines their place in the hierarchy. Alphas smell like Lavender cotton candy, Betas smell like pistachio air freshener, and Omegas smell like Lavender candy. Alphas and Omegas smell almost identical, but the difference is noticeable. As for the other guys, it appears that their sense of smell is diminished if their bodies are exerted."

Hanji stopped pacing and stared straight at Eren. "As for why I'm asking you this, I've only ever come across a couple of Omegas during my career. Since I teach chemistry at TS, naturally I'm inquisitive about the mechanisms of musk that males have. Too bad females don't have cat ears or tails, it would be so interesting!"

Eren stayed silent the whole time Hanji explained about things. He knew about the different scents to some degree, but he didn't know that smelling power could decrease during exercise.

"Anyways, back to you. Could you please answer a few questions I have about your Heat? It's rare that a chance comes along like this!"

Eren didn't see any way out of this situation. He didn't want to make a bad impression as he would be starting school as a freshman next week. "Fine, I'll try to answer as best I can."

"Thank you. First, when do you go into Heat and how many times does it happen?"

"It happens every week, and on Friday."

"I see. Wait, isn't today Friday! What time does it happen?"

"I don't know, the past few times it was really random…"

Hanji wondered if Eren knew how cute he looked like right now, his face tinged deep red. "Has it happened today yet?"

"No, but I can feel it coming soon…"

"Yes! So what exactly happens when you go into Heat?"

Eren felt like his face was on fire. "D-do I have to say? It's kinda embarrassing…"

Hanji begged silently with her eyes.

"Fine. My, um, t-thing gets y-you know, and I have to touch it or else it doesn't go down… I look at porn or something like that." Hanji looked so rapt with attention, he was almost afraid to continue talking. "Are we done now?"

"Almost. Tell me, what are you thinking while it's happening?"

"Thinking? Nothing, it's like my mind goes blank and all I can think about is making the feeling go away…it's more uncomfortable then pleasurable."

Hanji paused in thought. There was another long silence. "Y'know, I think I have something that might help. In fact, I developed it myself!" She walked to a discreet drawer partially hidden by a plant. Reaching into the bottommost compartment, Hanji pulled out a medium sized cardboard box. Inside the box were six syringes filled with bright magenta liquid. They were packed in Styrofoam, and each was wrapped in clear plastic. "After studying the Omegas I've had the fortune to come into contact with, I knew that some didn't like it when their Heat came. To combat this problem, I developed an elixir called Heat Prevention Serum, or HPS for short. It contains chemicals that supress the Pituitary gland when it makes the hormones that cause your Heat. Just inject it into your arm every Friday morning. When you run out, come to me in Lab 224 and I'll give you some more."

Eren gazed in awe as he was handed the box. He never would've imagined in an eternity that someone could actually understand what Omegas went through, and even offer help. No words came, but Hanji seemed to understand his thanks when she saw his smile.

"One more thing. When you make the football team, Levi will do the actual coaching. I know I'm the assistant, but he was just too busy to come in today. Something about doing a full-house clean, I think. But Levi is an Alpha, and a really dominant one at that. He could make the senior boys piss themselves if he wanted to." Hanji laughed.

"He can't find out you're an Omega because only Alphas are allowed. So, I'm giving you this cologne. It's artificial Alpha musk. Spray it on yourself every day and nobody will know you're not an Alpha. You have to remember to do it though, since you'll have football practice almost every day. The most important thing is to not let Levi know! Who knows what he'll do to you. Maybe get you pregnant or something." Eren's face said it all. "I'm only joking though, don't worry! Although Omegas can get pregnant, I'm sure you and him aren't gay. Right…?"

"Y-yeah, I'm not and I doubt he is either from what you've been saying. I never knew that I could get pregnant, that's…sickening to say the least. And wait, did you say I'm going to make the team?!" His tail swished back and forth, gaining momentum like a grandfather clock.

"Yes, of course! This opportunity is just too rare to pass up. I really want to compare and contrast Omega physicality with Alpha physicality. Think of all the research that would result in this! And about pregnancy, you'd go through all the normal stages like a woman would. It's really quite fascinating, even though men don't have any female reproductive organs. Omega's have a special sac that can act like a –"

"Hanji, thanks for all the info and I'm ecstatic I made the team, but Stop. Talking. I've been here almost an hour, so can I have the cologne please?"

"Sorry, I guess I got a little carried away! Here it is."

She handed him a large clear container with a nozzle at the top. It looked like a normal cologne bottle. He sprayed a minuscule amount into the air and sniffed. Oh Lord, this smells…intoxicating. It's aromatic and sweet at the same time. If lavender cotton candy existed, this would be exactly it. I could literally get drunk off this stuff...

"Smells good, right? Thanks, I made it myself!" Hanji beamed with pride.

"Thank you so much, Hanji. Words can't really describe how grateful I am. Well, I'll be leaving now.

"Bye!"

Eren opened the door to find a short male scowling up at him. His arms were crossed, black ears twitched. His tail menacingly stood still. Eyes as cold as steel glared past him at Hanji.

"Hanji, why do you have brats in here this early in the day?" The older man's voice was deep and flowed smoother than raindrops down glass.

"Levi! You're here. And it's already past 3 PM, what the hell are you talking about. I was just talking to Eren here. He's part of the football team. Cute, isn't he?"

Levi's eyes narrowed, and his frown deepened. "Adorable. Eren, is it?"

Eren nodded slightly. His words died in his throat. There was something about this guy, something other than the fact he was attractive as hell and had a really nice ass.

"Although she's not much good for anything else, I trust Hanji's judgement for picking members for my team. I expect to see you immediately after school next Friday. September 7th is our first practice. If you're late, don't bother coming. Understand?"

Eren nodded weakly and flew out the door.

"So Levi, what are you doing here? I thought you were going to be cleaning the whole day."

Levi sighed and sat down on the couch. He leaned his head back and draped his arms across the top. "I just finished. I still don't fully trust you to not make a mess in this office. Surprisingly, it looks okay."

Hanji grunted and sat down to work, making the list of the lucky members. A comfortable silence enveloped the two. The clacking noise of a keyboard was all that could be heard.

It was Levi who broke the silence first. "The kid that was just in here, Eren…he's one of them, right?"

"Ahh, you noticed! Yes, he is. It's going to be fascinating while he's here. Trost School hasn't had an Omega in what, five years? Six? Aren't you the least bit excited?"

Levi lifted his head and stared straight at Hanji. "Super." He deadpanned.

"I know that voice! You're actually really attracted, right?

Silence.

"I knew it! But Levi, try not to prey on the students. I told Eren you weren't gay, but you'll ruin it all if you make a move. And what's the age difference, like seventeen years? That's pedophilias."

"Shut up, Hanji. I'm not interested in him like that. I just haven't met an Omega in a long time. That's all."

"Sure, sure. Whatever you say, Mr. Super Gay. Haha, it's too perfect, it even rhymes!"

"Shut the hell up before I destroy your precious lab."

Her laughter died immediately. Clearing her throat and trying to hide her giggles, Hanji got back to work.

Levi sighed again. I don't like him, who'd be interested in a brat? But shit, his eyes. You could get lost in an ocean like that…

I know I don't like him, but the brat's eyes could be the end of me…

A/N: I knew I'd love writing omegaverse! If you guys want some more ereri, then check out my other story He Loves Me, He Loves Me Not. And also, in this fic Levi will be the one topping. Personally, I hate it when he bottoms, it doesn't feel right to me. Just putting it out there. Thanks for the reviews and favs, they're basically my life force.

Follow for the next chapter coming in the next few days!