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When he'd offered, pretending at nonchalance, to help Byleth through her heat, he wasn't sure what to expect.
She'd presented late, in rather spectacular fashion, after her strange transformation. He can still remember the Sword of the Creator tearing the sky and Byleth emerging, light-haired and glorious, an unholy harbinger of their coming rebellion. Afterwards, when she took her retribution for the death of her father, covered head to toe in blood, she had dropped like a stone. Edelgard was the first to her side. She drew her beloved teacher up into her arms, and listened desperately for a heartbeat that would not appear, despite the laboured rise and fall of her chest. As Hubert caught up to them, the change in their Professor's scent became more obvious. Gone was the plain nothing-smell of a beta, replaced with something cloying and sweet, the rich syrupy scent of an omega.
Weeks later, it was easy to see she was struggling to cope with her pre-heat. Trailing off during lectures, staring into space while Rhea listed off their mission for the month, and in one case, Edelgard had found her face down in the library, red faced and heaving in breaths.
Hubert was also struggling with the situation. It was difficult for him to stay on task when she was wandering around smelling so sweet and inviting. The only other omega attending Garreg Mach was Annette from the Blue Lions house, who was happily mated and constantly smelled of Mercedes, so it was a rare thing indeed when Byleth had presented. In a quiet moment of weakness, he found himself hoping with a sad edge of desperation that Edelgard had judged their Professor accurately, and that she would join them truly in the coming month. He gave up on the thought almost as soon as he had it; it was not like him to hope fruitlessly. All he could do is help Edelgard carve out her path.
Her Majesty had caught him staring a hole into the back of their Professor's head one afternoon and had suggested frankly that he could do something to lessen the burden.
"Sharing space helps with heat, does it not?" Edelgard had pressed. "Our professor needs assistance from an alpha, without necessarily mating. You could offer your company during her heat." As if it were the most matter-of-fact thing in the world.
He could not help the blush that rose unbidden across his sharp cheeks. Her Majesty couldn't possibly understand the intimacy shared between an alpha and omega during their heat. It would not do to accidentally mate the Professor before their true intentions had come to light. As the only Alpha within the Black Eagles house, it was his duty to mate only if it would be of benefit to Lady Edelgard.
Since his embarrassing conversation with Edelgard, the idea of spending Byleth's heat with her had wormed its way into his daily thoughts. It didn't help that Byleth was being propositioned by almost every available Alpha in the monastery.
So far, he'd seen her turn down courting gifts from Claude, and smile away the blushing Prince of Farghus. Sylvain had been showing up at the end of every lecture to walk the Professor to her next destination, and even Catherine was not immune to the change in Byleth's status, flirting mercilessly while they sparred.
With further needling from Lady Edelgard, he'd found himself in front of the Professor. Red-faced and embarrassed out of his mind, he'd tersely offered to help her with her coming heat, being sure to place emphasis on the fact that he would be there platonically and he was really only offering out of duty to their class and Lady Edelgard, of course.
Byleth had the nerve to give him an amused smile back, before flooring him by accepting. She'd asked him to come by her quarters that night, and he'd nodded hastily before escaping as quickly as his feet would carry him.
Hubert felt entirely unprepared that night as he took the steps down to the first floor of the dormitory. The cool air of the night helped to ease his anxiety only minutely. He had dressed down in his softest white shirt and black slacks, hoping that the fabric wouldn't irritate Byleth if she needed him close to her. It was his hope that the Professor would only need him for an hour or two. Surely, she would just need to scent him a little, maybe require him to provide some clothing to help during the night, and he could be on his way with his pride intact.
The second he'd knocked, she had whipped the door open so fast that it bounced off the wall with a resounding thwack. Her scent had been steadily becoming more pronounced the closer she was to her heat, and now it was rolling off her in waves, the heady smell resting heavy on his tongue. His cock twitched in anticipation, but he tamped down on the feeling as quickly as he could.
Hubert opened his mouth to greet her, but snapped it shut when she gripped his shirt in her little fist and dragged him inside her quarters with surprising strength. She swung the door closed with her foot, and then yanked him down by the collar and pressed her mouth against his in a searing kiss. He stiffened. Kissing was certainly not what he'd expected.
Byleth was insatiable and feral, nipping relentlessly at his mouth and diving in with her tongue when he parted his lips in surprise. Her fingers dug into his shirt and she clawed her way up to his neck, pressing herself as close to him as she could. Hubert shook off his initial shock; if physical contact is what she needed during this heat, that is what he would provide.
Byleth was almost a head shorter than him, so he graciously bent down to assist her. She let out an appreciative moan into their open mouthed kiss, raking her hands up to fist into his dark hair. She switched gears quickly, moving her kisses down to graze his chin. His hands snaked down her sides, coming to rest at her generous arse. The fabric of her chemise bunched under his fingers as he squeezed her, the scorching heat of her core inches away from his touch.
"Thankyouthankyouthankyouforcoming," she babbled, heaving in breath by the lungful, and laving heavily at his throat.
Without ceremony or warning, he was thrust onto her bed, straight into the nest she'd hastily constructed. Pillows were stacked around him, and she'd done an admirable job of finding as many blankets as possible to soften her bed. Pulling himself up onto his elbows, he could take in the first proper look at her since he'd arrived.
Byleth clawed at her shift, tearing pearlescent buttons as she ripped it over the top of her head. She was flushed head to toe, her breath coming in ragged stutters as she struggled with the offending piece of clothing. Her emerald hair was wild. Without the chemise, he could follow the soft lines of her body. She was truly built like a warrior, he thought, all in spite of the delicate nature of her secondary gender. Her pale skin was marred by dozens of scars, crossing the expanse of her toned stomach, littering her limbs with tales of hard-won battles. The soft patch of curls at the crux of her slicked thighs was enough to make his mouth water.
It felt unreal, hazy like a dream, to be here in her quarters, thoroughly ruffled and awaiting her next move. He had not expected such a turn of events. Seeing her wild and untamed, taking her pleasure from him, was eroding his carefully crafted control. Idly he wondered if the strength of her heat was pushing him into his rut. It was certainly not unheard of.
With her task completed, she launched herself at him, landing with barely a sound atop of him, her lips pulling into a smile. Her scent swirled around him, with no smallclothes or chemise to dampen it. He drew in an aching, deep breath and itched to touch her.
"Professor.." he groaned as she ground her molten body against his. Even through his layers, the heat rolling off her was almost searing.
"Byleth, Byleth, please call me Byleth," her voice was slurred, as she dipped her head down to mouth at his scent gland. A frisson of arousal ran through him. It had never occurred to him that their Professor would be affectionate during her heat. It was well known that omegas were desperately needy during heat, but Byleth rubbing her overheated body on his and licking greedily at his gland was definitely more than he had imagined. He was quite happy to let her take the reins.
Somewhere in the back of his mind, a little voice was screaming for him to put a stop to this ridiculous display. His hands landed soundly on her hips, but lightning quick, she had his wrists pinned above his head. Hubert jerked his head back in surprise. Her face was very close to his, and he could easily pick up the playful light in her half-lidded eyes.
She reared back, the flat expanse of her stomach pulling taut. The sight was driving Hubert wild, and he bucked against her. Although she wouldn't make it easy, he could overpower her and flip them, but having the Professor take charge and pin him was its own sweet torture. He could not bear to deny her anything.
She rolled her hips over him, and all thought promptly cleared out of his head. He had never been so hard in all his life. The wet feel of her slick was coating the front of his slacks; they would be thoroughly ruined after this.
"Oh, I can't wait for you to fuck me, Hubert," was not what he had ever thought he would hear from her, but there it was. His sharp green gaze caught her eyes, and she stared him down, mind-addled and crimson-faced as she was. Grinding her slick cunt across the front of his breeches, she continued her lewd proclamation.
"Going to fill me right up with that big alpha cock of yours, right?" Another roll of her hips pulled a groan from him. "I'm just aching for it."
Byleth gave his wrists a hard squeeze before releasing him, and he caught the silent instruction. A bubbling laugh escaped her as she dragged her nails across his still covered chest, slowly making her way down. Quick work was made of the laces of his slacks, and before long, she was running a hand across the length of him, only his smallclothes separating them. His hips rocked up of their own volition, desperate for the contact.
The heat must really be getting to her head, he thought distantly. He had never heard such vulgar language from the professor, despite her mercenary background. In fact, she was a woman of so few words, he was genuinely surprised she could curse so much.
"Yeah, I can't wait, I can't wait," she babbled on and on, dipping her hand into his smallclothes and finally, finally, pulling him out. The groan he let out at the contact was only mildly embarrassing.
Byleth was almost drooling. Her scent felt like it had doubled in the space, and he was drawing in lungfuls of the heady scent, driving him wilder with lust for her.
Pinning him down with her muscled thighs, she dropped down fully and starting to roll her aching cunt on his length. The noise of her slick against him was sinful. He drove up against her, desperately trying to find relief, but she pressed him down into her nest with a hand at his navel.
"Oh, yes, yes, that's it," her breath was coming in pants, as she coated him with her slick.
"Byleth, please," he hated to beg, but not being inside her was just as painful. She looked glorious and debauched astride him, heaving and sweat slicked, rolling her delectable cunt over his throbbing cock.
"Wanna be inside me?" The question felt almost innocent coming from their professor. She hummed. "Yes, yes, I'm ready for you, so ready, want you to breed me."
Her body lifted from him, and he ached from the loss of contact. Lucky for him, she wasted no time, taking him in hand and sinking delightfully onto him. The feeling was indescribable, a chorus of sensation as she slowly took him in. Her sweet cunt was gushing slick now. When she sank all the way to the hilt, a long deep moan ripped out of her, the noise eliciting another spike of arousal through him. She held still, head drooping to her chest, while she adjusted to the size of him. Despite the slick, it must still have been difficult to take him in with no preparation.
"Soo.. hah.. so deep… oh fuck."
The sight of his professor, usually so calm and collected, absolutely out of her mind with heat, speared on his cock and babbling profanities at him was as close to a transcendent experience as he was ever going to get. Fire licked within his veins. He shifted his hips up a fraction, experimenting with her boundaries, and she ground herself down in response, drawing out fresh expletives in its wake. Her cunt felt like a vice.
Byleth set a bruising pace, gliding upwards until he was almost slipping out of her before slamming her weight back down. His fists were curled so tight in an effort to keep controlled that he was digging half-moon shapes in the meat of his palms.
"Hubert," she whined, drawing his gaze from where they were connected to her face. "Does it feel as good for you as it does for me?"
Insecurity, at a time like this? "Really, professor," flashing his teeth in a wide grin, "you are exquisite. Let me show you my appreciation."
With that, he gathered her up in his arms and rolled them, pinning her almost tenderly to her soft nest. She squeaked in surprise, tensing slightly, but the look on his face had her relaxing within moments.
He smiled, enjoying being back in control. It wasn't nearly so easy to pin his professor down during training, and he reveled in the feeling. Though her heat had made her pliant, her body was still tight coiled muscle and rippling power.
Drawing her leg up gently over his shoulder, he pressed himself to the hilt within her, drawing a gasp from her lips. Her thighs were glistening in the low light. She looked good enough to eat.
Ever so slowly, he pulled almost entirely out, and gently rocked all the way back in, pressing gently but insistently against her cervix. He could tell her frustration was mounting, her whines growing louder and needier, her leg curling harder against his hip. He pressed a kiss against her calf in apology and drew his hand down the line of her body to the crux of her thighs. His fingers, darkly marked with cost of his magic, threaded gently through the soft, wet patch of curls there, before dipping down, just above where their bodies met.
Hubert brushed his thumb at the top of her cunt. She bucked up into his hand with a curse. Ah, there we are. He pressed firmly down with the pad of his thumb, tracing small circles. Byleth's moans turned to wails, punctuated with a litany of affirmatives.
"Oh yes, oh fuck! Right theeere.."
He picked up the pace, determined to have her rush off the edge before him.
She dug her claws desperately into his shirt, pulling the fabric taut towards her. He acquiesced, whipping it overhead with one arm, without disrupting the rhythm. Byleth purred her approval. The sound called deeply to his alpha hindbrain.
Delicately, she traced the line of his iliac furrow with one hand, and swept the length of his torso with the other, dragging through the soft light hair at his chest. He knew he was far from conventionally handsome - his frame too slender, only a hint of broadness at his shoulders, and his skin sallow and pale from lack of sunlight. The way her gaze raked over him, like she was ravenous, almost made him falter. She had her pick of all the alphas in the monastery, and yet she had chosen him to accompany her through her first heat. It was a question for later, but the thought had kindled something within his chest.
"Ohh, so good," she warbled, drawing him from his thoughts. "You're going to give me your pretty knot soon, right?" She ground herself down hard on his cock as she spoke, "fill me full to the brim.. pump me full of pups, ah, I want it so badly!"
Hubert slammed into her, gripping her leg and fucking into her so hard she wailed. Where is her brain, he thought ruefully, talking about children when war was about to break out over Fodlan? Regardless of the reality of their situation, imagining the future - Byleth's toned warrior body softened from carrying his child, his mark at her neck and a ring on her finger, letting everyone see who truly owned her, body and soul - was enough to send a shiver of pleasure down his spine.
He snaked his hand up to grip her neck, as he continued his assault on her clit with the other. How many times had he imagined her orchestrated death at his hand, and here she was, bouncing so prettily on his cock, unaware of the danger she could have walked herself into. Despite himself, he couldn't see how he would be able to finish the job if it were required of him. He cursed inwardly, and moved his hand to cup her face instead.
Her hand found the back of his neck, and she pulled down rather insistently, until they were pressed, chest to chest, his face so close to hers that there wasn't a breath he took without it coming from her first. She was bent almost completely in half but showed no sign of fatigue, so he kept up his pace.
Byleth's lips sought out his, gentle and coaxing this time.
"So close," she breathed into the kiss. He could feel himself swelling in response, knot beginning to press against the rim of her. He lent down to mouth hungrily at her neck, where her scent was sharpest. The blunt threat of teeth against her gland was enough to send her rocketing into her orgasm. Her legs shook with the force of it, and she wailed her praises until he was sure half of the monastery had heard her.
Her pussy clamped so tight around him that it didn't take long of fucking her into delirium for him to follow. Hubert aimed his bite, not at her scent gland, but at her shoulder, as he growled out his climax buried to the hilt inside her.
They lay, tied together and panting, for minutes, until he released her shoulder from his teeth. Byleth whimpered, pain likely returning after she had come down from her orgasm, so he ran his tongue diligently over the wound as an apology, lapping away the blood and soothing the wound as he worked.
She clung furiously to his front. After cleaning her bite as best he could, he rolled them back over, with Byleth on top so he didn't crush her while they waited for his knot to recede. Her purr had started up again. He looked down at her wild mop of hair, running a gentle hand down her back. He wondered if they were going to talk about this.
"Stay?" she asked in a quiet voice.
"Of course," was his reply. Fatigue had started to seep into his bones. "Your nest is very comfortable." She hummed her approval, and buried her face deeper into his chest.
"Besides, you may require my service in a few hours." Byleth finally raised her head, and looked him in the eye. Her smile was content.
"You'll stay the whole time?" Her smile grew. There was a playful light in her otherworldly eyes. "And.. you'll help me in the future? Don't feel obligated," she added hastily.
His arms circled tighter around her, and he bent to press his lips to the crown of her head. "If you'll have me."