Eren heard Levi whine over his own snarling, an Omega's cry coming from that throat with traces of fear in it, and it took him a few moments to figure out why. The Alpha forgot about whoever was at the door, pushing his aggression back to focus on his Omega, who was trembling now. He was calling out in answer, growling, rubbing his face against Levi's as he soothed him with those deep vibrations. It was not impossible to pull out of an Omega you had knotted, but it was extremely painful for them, while an Alpha felt little to no discomfort. Usually only a bonded pair would knot, so it wasn't really a concern for most Omegas. If they were close enough with an Alpha that they knotted, they did not need to worry about their mate carelessly hurting them. But Levi thought Eren was going to force them apart, pull out of his Omega to face what his instincts were interpreting as a threat. The Alpha's hands were on Levi's face, thumbs brushing over his cheekbones as he made soft shushing noises, pushing his hips up flush against the Omega to draw them closer together.

"Shhh, no, Levi, I'm not going anywhere. I wouldn't hurt you like that." Levi looked confused, and when his eyes went wide Eren knew that the Omega hadn't even realized he was making any noise. The sound cut off abruptly, and Levi bit his lip, brow furrowing. The cry had come out automatically, seeking to protect himself from the agony of a forced unknotting. He looked embarrassed, gaze dropping down and a flush painting his cheeks. There was another round of loud knocking, door rattling under the impact of an angry fist. The Omega looked up to Eren with a question in his eyes, and the Alpha was easing those dark strands out of his face, expression soft and affectionate. "They can bang on that fucking thing all they want. I'm not answering it until the knot releases." Levi buried his face in the Alpha's chest, arms curling into himself as relief flowed through him. He hadn't even known he was afraid, yet this Alpha was soothing him.

"How long d'they last?" Those hazy, slurred words made Eren smile. Levi had no personal experience with knots, nor did any of the Omegas he knew. It was impossible to knot an unwilling Omega, and those he dealt with were all unbonded. Mating was not something that Alphas or Omegas tended to discuss openly with people they were not close with, and Levi had no interest in it anyway. Now he wished that he'd paid a little more attention. The Alpha was still stroking Levi's dark locks, his other hand rubbing slow circles on the Omega's back. When he spoke Levi could feel the words, hot and breathy where Eren had his face pressed in close to the Omega's hair.

"It's different for everyone, I hear. Never dealt with it myself, obviously. Anywhere from thirty minutes to an hour. Supposedly if an Alpha senses a threat when he is knotted, it will release faster. Maybe this qualifies. Either way, they can knock until their knuckles bleed. Or they can break down the door, and I'll take that knife on the table and cut them open."

Eren said it calmly, without any venom or rage, and somehow that made it more threatening. Levi did not doubt for a second that he would turn that blade on anyone who tried to separate them. More pounding on wood, louder now. The Alpha felt his face freeze into a scowl as he tried to figure out who would be stupid enough to come knocking at his door. Mikasa was aware he was in rut, would know better than to come here unless she specifically wanted to fight him. Not that such a thing was impossible, but he had not pissed her off lately. If she felt like throwing punches, she would wait for him to return to the dojo and they could bash each other's faces in then. Armin might stop by if it was an emergency, but he would call first, would not be trying to smash his way through the door like whoever was outside right now. Jean always knocked like that, everywhere he went, as though you had personally wronged him and his ancestors and he needed to defend their honor, but there was no reason for horse face to show up. Mike would've had to tell him about Eren being in rut so Jean could take over some of his classes until he returned. Eren could only think of two people it could be, and he found himself growling again at the thought until Levi began to tense in his arms, scent going sharp with nervousness. The Alpha resumed his easy motions, combing his fingers through the Omega's hair, tracing them gently up his back, silencing the vicious sounds that wanted to escape.

"Sorry. Just... Pissed the fuck off right now, at whoever thinks it's a good idea to come fuck with me while I'm knotted in my Omega." Levi snorted, nuzzling in closer to Eren's skin. Not correcting the Alpha when he said

my Omega,

and Eren wanted to shout in triumph even though it meant next to nothing.

"S'not like they know we're tied up." His voice was still a little mumbly, and

God,

Eren wanted to listen to him talk all day.

They.

They could only be one of two people. Ymir, there to fight Eren for scent marking Historia.

Or Erwin, the Alpha that was friends with Levi. The one whose very name made Eren's Omega tighten with stress, smell faintly of fear. Eren was wrenching his eyes shut, head tilting to the side, teeth cutting into his lip as he bit back a growl. Ymir, he could handle without violence, most likely. The other Alpha? There could very well be bloodshed, and Eren couldn't find it in himself to care. The Alpha wasn't sure how Erwin would find this place unless Hange told him the location, which didn't seem very likely considering how excited she had been for Levi to be with Eren. Suddenly the knocking ceased, and Eren could make out two separate voices shouting. He cocked his head to listen, trying to pick out the individual sounds when suddenly he felt a shudder between his legs as the knot released, faster than he had expected even with an Alpha's rage flowing inside. Levi was sighing, easing off of Eren and pulling his hips back, feeling empty where he was previously too full. Something inside him mourned the loss, and Levi brushed the feeling aside with a frown. The Alpha laid him down on the blankets, snatching up his discarded boxers to clean the Omega a bit before he tucked the covers around Levi like he was putting a child to bed, wrapping him up tight. Eren sat down next to him, staring, unmoving. Wanted to throw his arms around the Omega and just lay on top of him, feel his small form underneath. Levi smirked up at him, wry expression on his face.

"Are you going to stare at me or go see who's outside?" Eren smiled back, listening as the voices outside increased in volume. One of them was louder than the other, definitely female, but it did not sound like Ymir.

"Stare at you." He pressed a chaste kiss to the Omega's forehead, bringing a blush to those cheeks again before he grabbed the other pair of boxers from the floor and tugged them on. Eren strode across the room, only to hesitate before opening the door and turn back to look at Levi where he lay in the Alpha's bed. It didn't seem safe, somehow, leaving his Omega in bed with just blankets to cover him. Only walls around him, instead of Eren's embrace. He had the absurd urge to go scent mark Levi again, even after Eren had just come inside of the Omega, his smell so thick that he could taste it in the air. Was worried he would leave and come back to an empty bed, this Omega just a phantom, a figment of his imagination. Punishment for all the things he had done wrong in his life. His brow was furrowing tight, lip back between those teeth. A screeching sounded out from his front yard, and he tried to pull his eyes away from Levi to no avail.

"What?" The Omega was twisting under his stare.

"Don't... Don't disappear on me." Levi looked at Eren like he was a fucking moron, then laughed.

"What am I going to do? Crawl out the fucking window? I can't even walk." The Alpha did not have an answer, could not tell Levi that he thought he was a creation of his mind, some wondrous lucid dream.

Eren sighed, shaking his head at himself and closing the bedroom door as he padded towards the front of the house. Now that he was not in the presence of his Omega, who had been stressing in the face of Eren's aggression, he felt it rising again. Felt his eyes flashing gold, teeth bared in a growl before he even went outside, fury swelling and shifting. He might not have wanted to frighten his Omega, but he certainly planned on striking some fear into whoever would dare to come between them. The Alpha threw the door open, slamming it shut behind him before he even looked to see who was on his porch.

No one. His porch was empty.

His yard however was not. There was a tall blonde Alpha standing in it, looking furious as he clawed at a woman who was clinging to his back, legs wrapped around him like he was giving her a piggy back ride.

Hange.

It was Hange, smacking the Alpha in the side of his head with her open palm and tugging viciously at those blonde strands. She was shrieking at him, right in his ear, and it took Eren a minute before he could understand anything she was saying.

"God damn it, Erwin, you are literally being a murderous cockblock right now! Do you

want

Levi dead? Just go the fuck home! He'll call you when he's ready you nosy shit! Who the fuck activates GPS on someone else's phone, anyway? You're a fucking stalker, is what you are!" He was prying her fingers out of his hair, pawing uselessly at her face. It was clear he really didn't want to hurt her, but his patience seemed to be waning. Such a large Alpha could have the Beta on the ground and weeping in a few seconds. The blonde was exercising an impressive amount of restraint, really. Or it would've been impressive, if he was not in Eren's yard, too close to his house, too close to Levi. Causing a fucking scene that he was sure to hear about from his neighbors, though that was the least of Eren's concerns. Right now he was trying not to rush at the pair, take both to the ground and paint them red beneath his fists.

"Christ, Hange, get off! I have it in your phone too, you know! Everyone who works with us has it! It's a safety precaution!" Erwin was trying to shake her off, reaching around to pull at her arms, attempting to dislodge her legs. Failing, miserably. Hange snaked one arm over his eyes, the other under his neck to try and choke him.

"It's not for creeping on your friends because you want to follow them around! Stupid fucking eyebrows! Get back in the car you blonde bastard!" The Alpha opened up his mouth, angling it down to bite her. Hange did not move, did not scream, did not even react. Just started kicking her legs wildly into Erwin's gut, making him let our a sharp breath before he snatched her ankles and held them out from his body.

"I don't want to hurt you, you crazy Beta fuck, but I will roll around in the fucking dirt until you let go, and then I swear I will bash those damn glasses in, if you do not GET THE FUCK OFF OF ME RIGHT NOW HANGE!" It would have been comical, under normal circumstances. Eren would probably laugh about this later with Levi once he had calmed down. If he did not kill them both, that is. Right now, with the rut bearing down on him, his Omega alone in his bed in heat... He wanted to rip them both into pieces and leave their corpses in his yard as a warning to anyone who even thought about walking up his goddamned driveway. His growling had been slowly increasing in volume as they grappled closer and closer to his house, and they both seemed to hear it at once, heads snapping up to look at him. Eren knew he must have been a fucking sight, dressed only in a pair of boxers, hair as just-fucked as he was, sticking in every direction from Levi's clutching and tugging. Face and neck smeared with the Omega's blood from the bites Eren had given him, still sweaty and wet with scent. Hange would not have a keen enough nose to sense it, but the Alpha would be able to smell things that could not be seen. The scent of Eren's rut in the air, his seed drying on his skin, Levi's slick mixed with it. Any Alpha who had encountered it from an Omega before would catch it. It was be unmistakable. Eren knew that the sweet smell was burned into his nose forever. The scent was both dangerous and appetizing for an Alpha, depending on the situation. Erwin's nostrils were flaring, and Eren could tell the other Alpha caught everything coming off of him, mingling together, making the blonde's eyes flash bright for the barest of instances. Eren's were already glowing steadily, had been since before he even opened the door, but watching Erwin's light up had him baring his teeth. Their heads were cocked to the side in opposite directions, jaws tense, body's strung tight with instinct. Then Erwin was relaxing his posture, trying to ease off without averting his gaze. Hange climbed down from his back, putting herself between him and Eren with her hands raised briefly in a placating gesture. Her voice was high and manic when she spoke, reaching back to tug on Erwin's arm, trying to pull him towards the car they'd come in.

"Eren! So good to see you again, my friend! It seems you and Levi have been busy, I'm glad! Now, me and Erwin over here were just leaving, so-" The blonde interrupted her, shaking off her arm and taking a step towards Eren.

"No, we weren't." Eren's growl shot louder, everything in him wanting to jump at this Alpha infringing on his territory, tear him open, leave him bruised and broken.

His Omega

was inside in heat, waiting for him. Still suffering under the strain of his hormones. Needed Eren there to give him relief from it, yet here was this Alpha he did not know. Keeping him from Levi. Looking at Eren like he owed him something.

I owe you nothing, Alpha. Everything here is

mine.

He tried to tell him that, tried to get words out over the animal noises he was making, but found he could not. That was okay. Those bestial sounds said all Eren needed to say. "I'm not here to fuck with you, Alpha. My friend is in there. Once I make sure all this is okay with him, I will leave. But not until then." Hange spoke before Eren could make another attempt to, her words laced with irritation.

"Erwin I fucking told you already-" The blonde's voice was dark, cutting her off with cold finality

"I need to hear it myself! You lied to me, Hange, put Levi's life in danger. Your words are worth absolutely nothing." Hange was cringing, eyes full of shame. Part of Eren wanted to beat this Alpha just for putting that look on her face, and he didn't even know why, barely knew her. The defeat in that gaze just seemed

wrong.

Erwin was walking up towards the porch, and Eren moved down to the bottom step to meet him. The blonde met his eyes, and Eren felt his instincts surge up bright and hot, clouding his eyes in red. The words came then, low, laced with his rage.

"Get the fuck out of here, Alpha. Levi can call you himself, if he wants to talk to you."

"I want to see him. I need to be sure he's okay. He's my friend." Eren took a step forward, and the blonde did not retreat from him. They were only a few feet away from each other, the air between them tense and electric.

"He may be your friend, but he smells like fear when he hears your name. Until he is out of his heat, you will stay the hell away from him. I will make sure of it. Now you need to go, while your legs will still carry you." A shadow crossed over Erwin's face at those words, but still he faced Eren down, mouth a grim line.

"I'm not trying to mate him. I just want to know that he wasn't forced into this. I don't know you, Alpha. Move aside, or I will move you myself." Eren was hissing, nails cutting into his palms as his fists clenched tight. His breaths were coming fast, eyes promising violence.

"Just you fucking

try it.

"

Something snapped in both of them at once, walls of control crumbling into dust as they lunged at each other. Erwin moved to throw a punch, but Eren was already ducking down under it, grabbing him around the back of his thighs and shoving his shoulder into the blonde's stomach. He lifted the larger man up just slightly to get him off his feet before taking him down to the ground, back slamming into the dirt with an audible thud. Hange was shouting at them, words incoherent in the background. Neither one was paying her any attention, all of their thoughts focused on the the fight before them. Eren was alight with righteous fury. This Alpha wanted to get to

his Omega.

Wanted to go into

his house,

lay eyes on

his Levi.

Wanted to look at his Omega wrapped up in his sheets, covered in his scent, filled up with his seed. Still sweaty and slicked and aching for Eren. That sight was not for Erwin, was for Eren alone, and if he had to pluck this Alpha's eyes from his skull to ensure that he would do so with a smile on his face.

Erwin was moving, pushing against the earth with his feet to try and turn them over as his hands tried to find purchase on the smaller Alpha's arms. Eren shifted his knees up, wrapping those long legs around the blonde's waist to hold himself in place as he started raining down punches. He felt his anger like a tangible thing, climbing up the back of his throat, spilling from him like fire. The blonde was blocking most of the blows, a few hitting home and making his head spin. He was caught off guard by the sheer ferocity of the Alpha on top of him. Eren was smaller than him, by a significant degree, and he had not expected to be brought down so quickly, let alone be struggling under the weight of the fists flying at him one after another. In the back of his mind he was thinking that this was no normal Alpha, that he was unlike anything Erwin had seen before. He was primal. Savage. They were both growling and snarling, a sound that would cause anyone who heard it to shrink back in fear, two beasts out for blood. Hange had gone silent now, not that either of the Alpha's noticed. Erwin shook off his surprise, trying to pull his head together. He couldn't just play defense against this rut crazed Alpha. The blonde dodged one of the strikes instead of blocking, throwing himself to the side and knocking Eren off balance enough to turn over beneath him. He shoved his feet underneath himself, standing and trying to shake the Alpha off, only to feel one of Eren's arms snake under his neck. He held it tight to the blonde's throat, closing the elbow of his other arm over his wrist and tightening his grip until Erwin could not breathe under the pressure of the chokehold.

As black spots started to swim into the blonde's eyes he clutched at the arms on his neck, the brunette a deadweight on his back, sealing off his lungs. Erwin tossed himself backwards onto the ground as he had threatened to do to Hange before. The larger Alpha landed on top of Eren, his weight and the strain of the impact knocking the air out of the brunette's lungs and causing his arms to go slack for a fraction of a second. It was long enough for Erwin to pull out of his grasp, and then he was turning over to straddle Eren, trying to pin his arms at his sides. He would hold this fucking

boy

down and make him submit, watch those eyes drop from his in defeat. Would bare his teeth in triumph before walking into his house, make sure Levi-

Erwin's world flashed black as a fist struck his face, right on the temple, followed by another that landed on his jaw. Suddenly his mouth wouldn't close right, and then he was listing to the side, Eren pouncing on him, knees on his shoulders to hold him still as those fists fell like rain. The blonde tasted copper in his mouth, and he began to wonder if his teeth were still all there when he heard a familiar voice cut through the air.

"Eren! Stop, it's enough! You fucking won, alright?!?"

Everything stopped at once, a switch flipped, and Eren was flying off of the blonde in an instant.

Levi.

Hange was there on the porch, a wobbling Levi wrapped in a sheet, supporting himself with an arm over her shoulders while she had one wrapped around his waist. Eren was growling louder now, racing across his yard and up the stairs to snatch the Omega from Hange's grasp. He picked him up like a bride, clutching Levi tight to his chest as he shoved Hange viciously down into the yard with a hiss. Eren wasn't thinking straight. All he could think was

'she's touching my Levi.'

The Beta stumbled, keeping her feet somehow as she moved over to where the blonde was sitting up, weaving back and forth, hands pawing at his face. Eren rubbed his throat on the Omega everywhere he could reach, over Levi's face, his hair. The Alpha grabbed his Omega's wrists and shoved them into his glands, pulling the sheet tighter around Levi, teeth bared at the pair sitting in the dirt. Levi made a sound, his Omega's cry, and Eren found himself calming as it washed over him, his growl transforming. No longer vicious and aggressive, now it was directed at the Omega, soothing, comforting. Not

the

Omega.

His Omega.

Those small hands were threading through his hair, stroking his cheeks, thumbing over his lips.

"Shhhhhh, Eren, it's okay, it's okay. They're leaving, I'm staying, it's fine." Eren's eyes were closing, breathing still ragged from fighting, muscles tight. They began to relax under the Levi's touch, the tension draining out of him bit by bit. Hange was helping Erwin to his feet, and when the blonde was upright he spat gore from his mouth, clutching at his head with a curse. His voice was rough when he spoke, raw and not his own.

"Levi. Tell me you're here of your own free will. I just need to hear it, from you, in person. Then I'll leave."

You'll leave either way.

The smaller Alpha didn't say it, didn't have to. Eren had finally fallen silent, and it took every ounce of his self control to remain that way. Watching the blonde sway with blood dripping from his nose did not hurt matters. Those fumbling steps, face swelling before their eyes, hand clutching at his wounded temple... It sang out Eren's victory in a way that words could not, and some savage part of him was howling at the rightness of it. His enemy, his rival, a threat to his Omega. Bleeding, and bruised, and broken. Defeated underneath him, helpless and beaten. Levi made an irritated sound, glaring at the blonde with eyes made of steel.

"Damn it, Erwin, will you please just go? I know you're worried, but now isn't the time for this bullshit. I will call you, when I go home."

"I'll come see you, when your heat is over. I need to talk to you. There are some things I've been meaning to tell you." That was the exact wrong thing to say, and Eren was growling again, vicious and hostile. Only Levi's fingers reaching up to run over the glands on his throat kept Eren from putting the Omega down and attacking the blonde again.

"I said I'll

call you,

Erwin. Get him out of here, Hange." She was wordless for once as she drug the sluggish Alpha to the car, shoving him into the passenger side before climbing behind the wheel. The car disappeared into the distance, and Eren finally pulled him eyes away to take his Omega back inside, locking the door behind them and carrying Levi to bed. He unwrapped the sheet that was coiled around him, discarding it on the floor along with his boxers, leaving them both naked again. After the Omega was settled in the center of the mattress Eren moved over him, pressing their foreheads together with a sigh, eyes closed tight.

"I'm sorry. I lost it." He could feel Levi's head shaking, those perfect fucking hands in his hair again, threading through it, stroking, calming. Eren felt his rut rising up, ready to stake his claim on Levi again. Ready to mark and take and own. Ready to dominate and control. He fought down his instincts, not wanting what was blossoming between them to be brought on by rage and jealousy. It was something precious, something sacred. Eren would not have it tainted by this dark emotion. He needed a few moments to relax, to breathe in Levi's scent, to feel that skin on his. He reveled in that warmth, that touch, those soft breaths.

"Hange said it was Erwin's fault, I know how he can be sometimes. He thinks he knows what's best for everyone, but he means well. I should've just called him back, maybe he wouldn't've come here." The Omega put his arms around Eren, tugging him down to the bed, laying his head on the Alpha's chest.

"It's not your fault." Levi was shifting next to him, heat coming back to the fore now that the adrenaline had faded. The Omega was aching, needy, arousal shooting hard, scent filling the air around him. He rutted up against Eren, a whine coming out of his throat as waves of lust assailed him. The heat seemed even stronger now that he had mated once, his body seeking to claim what it wanted by any means necessary.

"Eren, I... I

need

you." The Alpha was smiling then, and he coiled his arms around Levi and pulled the Omega on top of him. Eren gripped his hips, grinding his cock up against Levi ass, pulling a wanton sound from him. He looked up into that gray stare with eyes that were on fire.

"I'm yours, little Omega. Take what you need."