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HIS SHADOW

Summary:

SEBASTIAN X FMC ONESHOT
MATURE ADULT READERS ONLY

Eva and Sebastian were both away from Hogwarts and now need to return as 18 year olds to get their remaining credits. They run into each other in the Slytherin Common Room and all of their pent up desire is unleashed.

Notes:

A/N - THIS IS A MATURE ONESHOT FOR ADULT READERS ONLY
CW: Graphic Descriptions of a Sexual Nature
TW: BDSM Type Activities

Work Text:

One year, two months, and thirteen days. That was how long she had been away.

Funny the way things could change in such a short amount of time. Were the halls of Hogwarts smaller now? Or was her world just bigger?

Classes were set to begin tomorrow, but she had been required to meet with the Deputy Headmistress early due to her unusual circumstances.

Unusual circumstances. The story of my life, she thought.

She wore a light heel today, causing soft echoes of her footfalls to fill the air as she walked through the empty towers. She still knew the way, like the pages of her old field guide were burned in her mind. Up the Grand Staircase, past the trophy room, and behind the enchanted gargoyle. "Toujours Pur", she uttered, so that the beastly statue would permit her entrance.

Unsurprising that someone as dim-witted as Headmaster Black would neglect to change the password to his office after three years.

Her fingers trailed across the stone wall as she rose the narrow staircase to Black's office. Here, behind the desk of polished ebony, sat a witch with a shade of red hair that was undeniably Weasley.

"Professor." She called out, announcing her presence.

"Ah, if it isn't our own Evaline Winthrop." She stood, gesturing for Eva to sit down across from her. "We are pleased to welcome you back this year." She said with a smile.

"I'm pleased to be back, Professor." Eva replied.

"That is good to hear. Now, down to business." Professor Weasley summoned a few documents and turned them so that Eva could read. "You will have our standard seventh-year schedule, with a few exceptions." She pointed at marked up dates with her quill. "Mondays and Wednesdays you have a free period in the afternoons. You will spend this time studying for your remedial N.E.W.T. pre-exam. You will need to prove you are up to speed by the end of the fall semester so that we can schedule your assessment."

"I'm not taking my exams with the rest of the seventh-years?"

"No, dear. You will be assessed on an adjusted scale. There will be a single proctor assigned to both of you."

"...both of us, Professor?" Eva questioned.

Professor Weasley furrowed her brows. "I would have thought he would have told you. You were so close in your fifth year." She shrugged. "Mr. Sallow has returned as well, and the two of you will share much of the same study and lab sessions - what with you being from the same house and all."

That took her by surprise. Professor Weasley couldn't have known, but she hadn't spoken to Sebastian since the end-of-school feast that year. He hadn't returned her letters all summer afterward, only for her to find out that he had been transferred to an in-home program due to his delinquent behavior and lack of guardianship. It hadn't occurred to her that he might be returning as well; now that he was of age, he would not need a guardian and would no longer be able to stay at the group home.

"Speaking of which," continued the Headmistress, "We do not allow adults to live in the same quarters as the rest of the house, unless they turn of age during the middle of a semester."

"Oh, I'm sorry, I didn't know. I didn't -" Eva scrambled.

"No need. You will house in the Prefect quarters. They each have an individual bedroom within the suite. In fact, you will also be taking on Prefect duties." She sighed. "For you, I imagine that is an easy task. For Mr. Sallow...well I warned him not to try my patience. As an adult, you would hope he has gained some good sense but...we shall see." Eva didn't respond, she knew Professor Weasley's concerns were not ill-placed. "Well then, take your schedule and your first-day agenda for Slytherin Prefects," she handed Eva the small stack of documents, "and check-in with me after your classes tomorrow so we can finalize your accelerated curriculum." She stood - a polite dismissal. "Welcome back to Hogwarts, Miss Winthrop."

"Its good to be back, Professor." Eva walked out and descended the stairs with papers in hand. The castle house elves had already taken her luggage, and now that she knew where to find it, she made her way to the dungeons.

She stood in front of the entrance to the Slytherin common room when she realized she did not have the password. Shuffling through the items Professor Weasley had given her, she found a scribble above her schedule.

"Emerald Reign." She spoke into the air. The marble snake that slithered against the door frame disappeared, and she was able to enter, finally, into her favorite place in the world.

The common room was just as she remembered. Chilly, dark, and luxurious. Some might find it too sparse or depressing, but any Slytherin at heart would know where to find the perfect spot for relaxation between studies.

The main hearth was near the center of the room, a fire already roaring. A beautiful glow emitted from within, warming everything around it.

As she approached, she realized that a familiar tuft of brown hair was poking over the edge of the couch. Her stomach did a small flip as she approached.

"Sebastian?" She asked, incredulously. Despite having just been informed by Professor Weasley of his return, it was another thing entirely to see him face to face.

That face...

Somehow even more handsome than before - clean shaven, neat but effortlessly tousled hair, and a lean but broad shouldered frame - he disarmed her with just a smirk.

"Well, look who it is." He closed the book that had been sitting on his lap and put it to the side, patting the cushion next to him as an invitation.

There was a time where Eva had been too shy, too insecure to stand too close to him. But she was older now, more experienced. And Merlin, how he could convince her to do anything.

He looked her up and down, assessing her. "There you are." Sebastian spoke, his tone light. "I was beginning to think you wouldn't show." He taunted, lifting a condescending brow.

"You knew I would be here?"

He shrugged. "Ominis told me."

She nodded, not wanting to pry. The last she had heard, Ominis hadn't spoken to Sebastian either.

"How was your year abroad?" He asked.

"Enlightening, I suppose."

"Is that right?" He laughed. "Do tell."

"Well," she began, taking a breath, "I met with some of the best minds in the study of ancient runes, to start. You would have loved that."

"I bet." He agreed.

"And," She continued, "I was able to look at some of the recovered writings from the Library of Alexandria."

"Okay, I don't want to hear anymore. You're just trying to make me jealous. Leave me to my entirely un-recovered book."

They both laughed.

"Sebastian...I've...I've missed you." She confessed.

He relaxed into the sofa, hanging an arm across the back of it. "Have you now?" Sebastian replied, his tone light and teasing. "Well, I suppose I should feel flattered to have been the object of your yearning." He smiled, but there was a sharpness to it. "Though I must admit, I'm surprised you didn't rush in here the moment you arrived at Hogwarts. Not eager enough to see me, I figure." His gaze raked over her, a hint of challenge in his eyes as he awaited her response. The firelight cast long shadows across the room, the sound of the crackling flames a comforting background noise.

Eva lowered her gaze. "Professor Weasley demanded I go and see her as soon as I returned." Eva scooted closer to Sebastian, until his arm grazed her.

Sebastian tensed slightly at Eva's touch, his muscles flexing involuntarily. For a long moment, he simply regarded her in silence, the firelight casting shadows across his handsome features.

"I confess, I missed you as well. More than I care to admit." His tone was playful, teasing, but there was an undercurrent of sincerity beneath the words. Sebastian's eyes held hers, searching almost desperately. It was rare to see such raw honesty from the usually guarded Slytherin.

Eva gazed up at Sebastian through long, dark lashes, her chocolate-brown eyes shining with an intensity that threatened to consume him. Unconsciously, her tongue ran across her lower lip. It grabbed his attention immediately.

The air between them felt charged, electrified. They could both feel it. He found himself shifting closer to her, his own body seeking out her warmth, her nearness, and Eva would not push him away.

"Do you want to know what I've thought of, every moment we have been apart?" He asked in a low voice. He raised his free hand to cup her cheek, his thumb brushing her lower lip in the place her tongue had just been, tracing its soft, inviting curve.

Eva was suddenly, embarrassingly aware of how flushed she was becoming beneath her clothes. She saw him cast a furtive glance towards the door, straining to hear any sound of approaching footsteps or voices in the corridor outside.

But as he looked back into Eva's dark, inviting eyes, he felt his resolve begin to crumble. The temptation of her touch, the promise of the passion that had always simmered just beneath the surface of their friendship, was simply too great to resist. Without another word, Sebastian surged forward, closing the remaining distance between them until his lips crashed against hers. His arm curled around her waist, pulling her against him as he plundered her mouth with hungry kisses that spoke of all the pent-up longing that had accumulated during their time apart.

"Eva," he gasped against her lips, one hand caressing the nape of her neck while the other roamed the curve of her waist, mapping the dip and swell of her figure. "I've missed you... I've missed this... I can't..." He trailed off, his voice rough and raw, as he peppered her face with hot, open-mouthed kisses.

Sebastian's hands left a burning trail across her flesh as they roamed her curves. He could feel the way her body trembled beneath his ministrations, the way she arched into his touch, silently begging for more.

Eva cradled his face with her hands as he kissed her. He bit her lip, her tongue, and moved down to nibble at her ear and chin. Each bite became more and more aggressive until she was sure he had drawn blood. Every stab of pain from his teeth sent blood rushing straight to her core. "Eva," he growled against the shell of her ear, his hot breath fanning across her flesh and sending shivers down her spine. "I want to devour every inch of you." She could almost hear the strain in his voice, as if pained. "Can I do that? Will you let me devour you?"

There was nothing in this world she wanted as much as Sebastian Sallow. His face, his hands, his smell, and even his words excited her. She needed him, craved him, and she couldn't deny it any longer.

Sebastian's gaze raked over her face, taking in the flush of her skin, the way her chest heaved with each labored breath. He could see the desire written plainly in her dark eyes, the desperation that mirrored his own. It only fueled his hunger.

His hands tightened their grip on her, his fingers digging into the supple flesh of her hips as he held her against him. "Tell me you want it," he demanded, his voice rough and commanding. "Tell me you need me as much as I need you." His thumb brushed over her swollen lower lip, smearing the blood and her saliva, a perverse mix of pain and pleasure. "Because Merlin knows I've been going mad with it, with wanting you... Ah, Eva..."

He shuddered against her, his hips rocking forward in an unconscious parody of the act he so desperately craved. The evidence of his arousal strained against his trousers, an insistent throb that couldn't be ignored. Sebastian wanted her to feel it, to know the effect she had on him.

"Let me take you to bed," he urged, his voice a low, seductive rasp. "Let me show you what I've been dying to do since the moment I first met you." His eyes bored into hers, blazing with fevered heat.. "Say yes, Eva."

Eva gasped every time he pressed his hard length grind up against her, the layers between them driving her wild with frustration. "Yes, yes. Please." She whimpered, no longer caring how desperate she sounded. In that moment, Sebastian knew she was his.

"I'm not going to be gentle, you know that right?" He replied, smiling but serious.

"Yes." She confirmed.

"And you're okay with that?" He asked, seeking assurance that she understood.

She hesitated, ashamed. "I like it." She affirmed, coquettishly. "I like it when you're cruel."

That surely ran deep, a wound from their past history that festered inside her until she couldn't remember what it was like before she had it. But there was something about him, about his darkness, that thrilled her. 

"Good girl," he purred, his voice a low, approving rumble in his chest. "Because I won't be gentle with you. I can't be, not now that I know how much you need it." A feral grin spread across his handsome face, revealing the points of his teeth. He could feel the heat between her legs pressing urgently against his straining arousal, separated only by the flimsy barrier of their clothing. The teasing was almost unbearable.

His hands slid down to grip the curve of her ass, squeezing as he ground his hard length against her core with deliberate, punishing force. He wanted her to feel every throbbing inch of him.

Sebastian's fingers tangled in her dark hair, fisting the silky strands as he tugged her head back, baring the slender column of her throat to his hungry gaze. He leaned down, his teeth sinking into the tender flesh where her neck met her shoulder, biting down hard enough to leave a vivid purple bruise in the shape of his mouth. He sucked and licked at the abused skin, his tongue tracing the angry red marks, relishing the taste of her flesh beneath his lips.

"Keep quiet, Eva," he commanded, his voice a low, guttural rasp against her skin. "Don't make a sound, no matter how much you want to scream for me." His fingers deftly worked at the fastenings of her bodice, popping the buttons one by one until the garment hung open, exposing the creamy swell of her breasts. He could see the way her nipples strained against the confines of her corset, the hard little peaks begging for his touch.

"If you can stay silent, I'll give you what you want." He punctuated his words with a sharp thrust of his hips, the hardening bulge in his pants rubbing up against her. The friction was maddening, driving her wild until she let out a pent-up moan.

Sebastian laughed. "You're not a good listener. Never have been." He goaded. "I may have to shut that pretty little mouth of yours before you ruin this." He began fumbling at his belt. "You want this? I'm going to give it to you." He threatened. "Get on your fucking knees."

Sebastian began to work at the fastenings of his trousers, his deft fingers making quick work of the belt and buttons. He could feel the relief of cool air against his overheated skin as he shoved the fabric down, freeing his throbbing erection from its confines. It sprang forth, long and hard and already glistening.

"On your knees, Eva," Sebastian repeated. "Now." He pointed to the floor in front of him, his eyes flashing with a dangerous intensity that brooked no argument.

As she sank to her knees, Sebastian yet again fisted a hand in her hair, gripping the strands and holding her head steady. With his other hand, he grasped the thick length of his cock, stroking it slowly, teasingly, as he brought the swollen head to rest against her parted lips. He could feel the heat of her breath ghosting over his sensitive skin, the way her mouth wanted so desperately to accept him.

"Is this what you want, Eva? To be used like a cheap whore, to be fucked in every hole until you can't take anymore?"

On her knees she stared up at him, his fiery eyes and starry freckles somehow more captivating than the thick appendage throbbing above her. Her eyes didn't leave his as she spoke against the tip of his cock. "Yes." She whispered.

"Open wide, sweetheart," he purred in a seductive rasp. "I'm going to fuck this pretty little mouth of yours until you cry. Until you're gagging and sputtering and begging me for air." He pressed forward, the fat head of his cock pushing past her lips, stretching them wide.

Sebastian's grip tightened in her hair as he began to fuck her face with long, deep strokes.The wet, obscene sounds of his cock plunging in and out of her throat filled the room, mixing with the harsh pants of his breath and the desperate whimpers that were dying on Eva's throat.

"That's it, take it all like a good girl," he encouraged, his voice a low rumble of approval. "Take every fucking inch of my cock down your greedy little throat." He could feel her struggling to breathe through her nose, could feel the way her throat convulsed and clenched around him as he used her mouth for his pleasure.

"Fuck, I can feel you gagging on it..." he panted.

With each thrust, he drove himself deeper. He could feel the head of his cock pressing against the back of her throat. Eva gagged and sputtered around the thick intrusion, tears streaming down her face as Sebastian fucked her face with single-minded intensity.

"Fuck, Eva, yes... I should have done this ages ago. If I had known how bad you wanted it..."

Eva, despite his relentless assault, continued to suck and lick as he used her mouth. She wanted to respond, to tell him that she wanted him from the first day they met. The fact that he was finally using her as she fantasized was as satisfying as it was humiliating. 

Sebastian's eyes darkened with a possessive hunger as he saw the tears streaking down her face. He could hear the desperate, choking sounds spilling from her mouth, but he didn't let up. If anything, the knowledge that he had her so far gone, so desperate for his touch, only spurred him on to fuck her face harder. The feeling of her nose pressed against his pelvis, the way her neck bulged obscenely around the thick girth of his cock, was almost too much to bear. 

"Fuck, Eva, I knew you you could be dirty, but this... I didn't realize how badly you craved my cock, how desperate you were to be used like a cheap whore." His grip tightened in her hair, forcing her head back as picked up in his brutality.

"I'm going to fill your slutty little mouth with my cum," he warned, his voice a low, breathless growl. "I'm going to feed you every last drop, paint your throat white, and you're going to swallow it all like a good girl, or else."

With a hoarse cry, Sebastian slammed his hips forward one last time, burying himself in Eva's convulsing throat as his climax overtook him. Thick, hot ropes of cum erupted from the tip, flooding Eva's mouth and throat, forcing her to swallow quickly around the relentless spurts. She could feel the heat of it, the weight of it on her tongue and in her throat, even as Sebastian's grip on her hair tightened, holding her in place as he rode out the waves of his orgasm. It was odd - the taste was unpleasant but there was still something undeniably Sebastian about it that she couldn't help but lap it up like the finest ambrosia.

Sebastian slowly withdrew his still-twitching cock from her mouth. He watched with a satisfied smirk as she gasped and choked, tears streaming down her face as she struggled to catch her breath. The sight of his own release smeared across her lips and chin, dripping down onto her heaving breasts, filled him with a deep sense of pride and possession.

"That's a good girl," he praised, his voice a low, approving rumble. "You swallowed every drop like I told you to." He reached out and wiped a stray glob from the corner of her mouth, pushing it past her lips so she could savor the musky, salty essence on her tongue.

Sebastian's eyes raked over Eva's disheveled form, taking in the way her hair had come loose from its careful styling, the red marks on her neck and the obscene flush of her skin. He could see the way her corset had been pushed askew, her breasts heaving above the lace trim. The sight of her like this, debauched and desperate and still eagerly lapping at the evidence of his desire, sent a fresh surge of lust coursing through his veins.

"I think it's time we took this further," he murmured, "It's time I showed you just how badly I've wanted to ruin you, to fuck you until the only thing you can think about is me."

With a sudden, sharp motion, Sebastian hauled Eva to her feet and swept her into his arms. He captured her lips in a searing, plundering kiss. He could taste himself on her, the lingering essence of his release mingling with the sweetness of her own saliva.

As he kissed her, his hands roamed her body, squeezing and kneading the soft flesh of her breasts, her hips, her ass, until he threw her to the sofa and crawled on top of her. She arched her back, pressing against him so that his already stiff cock rubbed against her.

"You're absolutely dripping, aren't you? I can feel how soaked you are." He rolled his hips to meet hers, "Tell me, my greedy little slut, have you always been this way? Have you been walking around Hogwarts with your cunt aching for my cock, your body screaming for me to fill you up?"

He slid one hand up her side, his fingers brushing teasingly over the swell of her breast before circling her nipple that had been thrust above her corset. He could feel it stiffen under his touch, could see the way it strained against the material, begging for more.

"I want to hear you say it, Eva," he breathed, leaning in to nip at her throat, his teeth grazing the sensitive skin. "Tell me how obsessed you are, how devoted you are to the feeling of my body against yours. Beg me to fuck you." He could feel his cock throbbing against her, hard and heavy and aching to be buried inside her.

"Be a good girl and say it, Eva," he commanded, his voice rough and demanding. "I want to hear you beg for it, darling." 

"I - I -" She stammered. "I want you, Sebastian. I need you."

He had her right where he wanted her - needy, aching, and begging for his cock like the wanton slut she was. In a flash, he had her skirt bunched up around her waist and her soaked panties ripped away, baring her glistening folds."Since you asked so nicely," he purred, his eyes glinting with a feral hunger as he loomed over her. "Spread your legs for me, Eva. Show me that pretty pink cunt that's dripping for my cock."

The scent of her arousal was thick in the air, making his cock throb and jerk. He palmed himself as he watched her, his eyes roaming hungrily over her body. "Beg me for it again, slut. I want to hear how badly you need me to fill you up, to stretch this greedy little fuckhole until you're screaming my name." He rubbed himself harder, more pre-cum leaking from the tip.

She whimpered. "Please, please." She cried.

"As you wish, my greedy little whore," he snarled, gripping her thighs hard enough to bruise as he yanked her hips up and forward. Her pussy lips parted obscenely, revealing the glistening pink flesh within, the tight entrance clenching around nothing. He notched the broad crown of his cock against her opening, and with a brutal thrust of his hips, he buried himself to the hilt inside her.

"FUCK!" Eva screamed, her back arching off the couch as Sebastian split her open. Pain and pleasure short-circuited her brain, making her see stars as he stretched her beyond what she thought possible. He barely gave her time to adjust before he pulled out almost to the tip and slammed back into her. 

"Yes, yes, yes!" she babbled incoherently, her legs coming up to wrap around his waist, her heels digging into his ass as he began to piston in and out of her. The obscene sound of skin slapping against skin filled the room, coupled with the wet, squelching noises of her pussy being pounded mercilessly.

Sebastian set a brutal pace, fucking into her with long, deep strokes. He could feel her walls squeezing and fluttering around him, trying in vain to adjust to his size. But he didn't let up, just kept pistoning into her, grunting and growling with the effort, his eyes dark and wild as he used her like a plaything.

"That's it, take it, fucking take it," he growled, one hand coming up to wrap around her throat, squeezing just hard enough to make her light-headed. "This is what you were made for, isn't it?" He punctuated his words with a sharp thrust of his hips, grinding his pelvis against hers. He could feel her cervix yielding under the force of his assault, could feel the way her body shuddered and trembled beneath his own. "Fuck, you feel incredible," he groaned, his breath hot and heavy against her ear. "So fucking tight, so fucking perfect. This cunt was made for me, don't you think?"

Sebastian captured Eva's scream with his mouth, crushing his lips against hers as she came apart beneath him. He swallowed her cries of ecstasy, drinking down each desperate moan and whimper as her orgasm crashed over her in wave after wave of intense pleasure. He could feel her cunt clenching and rippling as she gushed around his cock.

With a final, brutal thrust, Sebastian buried himself to the hilt inside her and erupted, flooding her womb. He grunted and growled into their kiss, his hips jerking and shuddering as he emptied himself inside of her.

As the final pulses of his release subsided, Sebastian remained nestled deep inside Eva, his softening length still buried to the hilt in her cum-filled cunt. He kept a possessive hand splayed across her lower belly, as if he could somehow feel a life he'd planted growing inside her.

"Mine," he murmured, his voice a low, satisfied rumble against the skin of her throat. "This body, this cunt, this womb... it's all mine now. You belong to me, Eva." His voice began to drift off, as if he was falling asleep right there on top of her chest. "Forever."