Chapter Text
The end of seventh year was fast approaching and for Sebastian it couldn’t come soon enough, he was ready to escape from Hogwarts, Feldcroft, all of it. He’d had enough of being trapped in a cage, after having a taste of dark magic he wanted to pursue it.
After everything that happened in fifth year, he’d started to lose most of his close friends and family. Ominis never forgot Sebastian’s use of dark magic and began to gradually distance himself, eventually not speaking to him at all. He couldn’t forgive Sebastian for using it, not after everything he’d been through as a child.
The last thing he heard from Anne was a letter that she’d left for him in their late uncle’s home, informing him that she could never forgive him for what he’d done and that he’d gone too far. She never wanted to hear from him again. In his mind, he hadn’t gone far enough.
The only person who he felt truly understood him was (Y/N), you’d been friends with him since fifth year and in a relationship since sixth year, he thought you’d always be there for him. But a few days ago, he spotted you in the library alone. Sebastian walked over to you and pulled out the chair on the opposite side of the table, making a horrible scraping noise across the floor. You almost jumped out of your seat, pulling your gaze from the book in front of you and locking eyes with him.
“(Y/N). How are you?” Sebastian asked, looking you up and down. You tried to smile at him, but it faltered, you just had to hope he didn’t notice.
“What’s wrong?” He asked, his brow furrowed. You pursed your lips, trying to think of how you could explain what you were thinking.
“I know what you’ve been doing Sebastian, torturing and killing poachers. Are you insane?” Sebastian knew that if you weren’t in the library within earshot of the librarian (Y/N) would have been yelling at him.
“They deserved everything that they got.” Sebastian stated firmly, he knew he was right. He was doing what other people wouldn’t dare do.
“Not that Sebastian, you swore to me you wouldn’t use dark magic again.” (Y/N) spoke slightly louder, your patience with him was slowly being ebbed away. Sebastian rolled his eyes and slouched back into the chair, he thought you’d understand.
“I’m sorry, ok? I wanted them to pay.” He stated bluntly, without a single ounce of remorse. You huffed and gathered the books that were on the table in front of you. Sebastian just stared at you as you walked away from him.
Later that evening, Sebastian walked back towards the Slytherin common room alone. He’d normally have you by his side wherever he went, but you’d been giving him the cold shoulder all day since your conversation in the library. As he headed down the final staircase to the common room, he heard voices talking in hushed tones which made him pause on the last step to listen, just out of sight of whoever it was.
“He’s using dark magic again; I don’t know what to do Ominis.” (Y/N) confessed sadly, tears streaming down your cheeks. Ominis pursed his lips, not knowing what to say.
“He won’t listen to anyone (Y/N), I don’t think there’s anything we can do to help him anymore.” Ominis replied.
Sebastian saw red, his old best friend was speaking to you but wouldn’t speak to him. His breathing grew heavier, feeling himself get angrier every moment that he listened to your conversation. As much as he wanted to hurt Ominis for so much as speaking to you, he knew you’d never forgive him for it. He’d lose you too. With that in mind, Sebastian crept away, only returning after curfew when he knew everyone would be in their own common rooms.
The next morning, Sebastian rolled out of bed, a red haze still surrounded him, not able to let go of what he’d heard the previous night. He released a loud sigh, glancing around the dormitory. He needed to come up with a plan to keep you with him and away from anyone who might try and steal you away.
He stood up sharply, grinning to himself. He had the perfect idea. He quickly gathered his books from where they were discarded on the floor next to his bed and made his way towards his first class of the day, charms class. As he entered the room, he spotted you sat in your usual seat, the one next to his. He walked over and sat down next to you.
“Hey.” He said cautiously, not wanting to ruin his plan by scaring you off straight away. You glanced over at him, giving him a small nod before turning back to your book. Sebastian sighed; this was going to be harder than he thought.
“Can we talk later? Please (Y/N). Will you meet me near the defence against the dark arts classroom?” He almost begged, you sighed turning to look at him.
“Ok, but later. I’m busy right now.” You responded, somewhat harshly. It hurt you to treat him this way but he needed to understand that what he was doing was not ok. He looked dejected, causing you to sigh.
“I’m sorry Sebastian, I’m just frustrated right now.” You said calmly, watching some of the tension leave his body. His shoulders dropped.
“It’s ok, I understand I’ve been an arse to you recently and broken your trust, I want to make it up to you.” Sighing again, you agreed to meet him at seven, regardless of what he’d done, you still loved him.
Just before seven you made your way to the corridor outside of the classroom, waiting for Sebastian to arrive. You were missing dinner to meet him, hoping that whatever he said would be worth it. As you approached the end of the corridor you felt an arm wrap around your waist and drag you backwards into a small room. You went to scream but a hand clamped down over your mouth, the door slamming closed so you were locked inside. You struggled until you heard a laugh that you’d come to recognise well.
“For Merlin’s sake Sebastian!” You fumed, turning on your heel to face him, trying to calm yourself down. He smiled sweetly at you, managing to apologise in between his laughter. You shook your head but smiled at his antics, for a moment he seemed to be back to his old self.
“So, you wanted to talk?” You asked after he’d stopped laughing so much. He nodded, leaning back against the wall.
“I wanted to apologise for how I’ve been lately, I’ve not been myself. Maybe because of what’s happened with Ominis and Anne. I’m not sure. But I’d never want to do anything to hurt what we have.” He said softly. Doubt still lingered in your mind about whether he was being truthful, you hoped he was but after everything that had happened, you couldn’t be sure. You mulled over his words for a moment, his gaze never left you. His eyes gave away what he was thinking about.
“Something else on your mind?” You quipped, able to tell from how dilated his pupils were, he wanted you.
“Maybe.” He replied. You glanced down to the floor, debating whether the storeroom was really the best place for this.
Sebastian backed you into the storeroom door, roughly placing his hand around the base of your neck, forcing you to look up at him. You stared into his eyes, quickly flicking your gaze to his lips and back again.
“Is there something you want (Y/N)?” He smirked, immediately noticing the look you’d given him. You went to reply but he stopped you, pressing his lips against yours in a hungry kiss. Your eyes fluttered closed as he removed his hand from your throat, pinning you to the door by pressing his hips against yours. He nipped at your lower lip with his teeth before attacking your mouth again.
You could feel him getting hard, your hands had naturally gravitated to his back when he started to kiss you but slowly you lowered one and began to touch him through his trousers. Feeling your touch, he quickly undid his belt and whipped it off, discarding it across the room. Pulling away from you, he took hold of your shoulders and pushed you to your knees. Looking up at him through your eyelashes, you saw him smirk at you as he unbuttoned his trousers, shuffling them down slightly along with his underwear, exposing what you wanted.
Placing your hand around the base, you slowly wrapped your lips around the tip and began bobbing up and down, swirling your tongue around his tip each time you came back up. He moaned quietly at your motions, lacing his fingers through your hair to push your head down further.
“I need you (Y/N)” He groaned, you continued your movements, taking your time to tease him. You could see that he was becoming more and more frustrated, he gripped your hair, pulling your mouth away. You knew what he was suggesting, seeing how badly he needed you.
“I’d never hurt you, tell me if you don’t want this.”
“Please, I want this.” You practically begged.
“Are you sure?” He asked cautiously, he didn’t want you to agree to something you didn’t want.
“I’m sure. Please Sebastian.” You replied earnestly, you wanted him, regardless of what he’d done. He stared at you for a moment before pulling out his wand, your eyes widened.
“Silencio.” He murmured, sparks shooting out of the tip of his wand. You tried to speak but no sound could be heard. He smirked again before pulling you into the centre of the room and laying you on your stomach.
“Can’t have you making too much noise now, can we?”
You could hear Sebastian shuffling around behind you, making you wonder what he was doing until he grabbed your wrists and placed them in the middle of your back, quickly wrapping his tie around them and tying it into a tight knot. He pushed your skirt up around your hips and grabbed your underwear, slowly pulling it down your legs. You wanted to let out a moan but couldn’t, you needed him now.
“Is all of this for me?” He asked, running a finger between your folds. You were soaking wet, ready for him. He hummed in amusement, toying with you while you squirmed underneath him, trying to push down on his finger. Noticing your neediness, Sebastian pushed two fingers inside of you, stretching you open and placed his thumb on your clit, rubbing in small, firm circles. Your eyes rolled back at the sensation, the stretch and the stimulation to your clit was making you wetter by the minute, but Sebastian was in no rush. He wanted to draw it out and make you plead for every orgasm that he’d give you.
He slowly withdrew his fingers to the tips and removed his thumb from your clit causing you to squirm, feeling your orgasm slipping away every centimetre that he pulled out. Frustration took over and you began to wriggle, trying to get back his fingers. Sebastian laughed at your neediness.
“Sorry love, did you want them back?” He asked, pushing his fingers back in quickly, curving them inside of you. Your mouth hung open; you were gasping for relief.
“You can cum if you want to. But it won’t be the last one that I get out of you tonight.” He teased, slapping his hand down onto your bare arse, leaving behind a bright red handprint. Sebastian continued tormenting your clit until you tensed up around his fingers, your walls spasmed around him as you orgasmed. Barely a moment after your orgasm had subsided and Sebastian had removed his fingers, he flipped you onto your back and crawled on top of you, placing his hands either side of you.
“Are you ok? Do you want to keep going?” He asked sincerely. You nodded intently, eyes pleading with him. He licked his lips, gazing at you hungrily. He lifted your knees up to bend your legs and placed his tip against your entrance, toying with you as you tried to move down onto him. You knew he was completely in control.
He started slowly, teasing you as he pushed the tip in, taking his time as he stretched you open. Gradually, his thrusts got deeper and harsher.
“Arch your back.” He commanded, you did as asked and he hit something deeper inside of you that made your mouth fall open. He placed his thumb back on your clit and rubbed harsh circles, making you thrust up into him.
“Shit, (Y/N). I’m going to cum.” Sebastian moaned, his thrusts became erratic as he was chasing his orgasm. With him inside of you and the pressure he was putting on your clit, it didn’t take you long to fall over the edge into another orgasm, your walls fluttered around him pushing him to orgasm, his moans echoing off the walls in the small room. You could hear your heart beating in your ears and the sound of Sebastian’s laboured breaths as he pulled out of you and leant back onto his knees. Taking a breath, leant forwards and grabbed your shoulders, pulling you up into a sitting position. He made quick work of the knot he had used to tie your hands together.
“Sonorus.” Sebastian murmured, undoing the silencing charm he had placed on you.
You met Sebastian’s gaze as he searched for his trousers and underwear that had been thrown across the room at some point. He smiled at you as he slipped back into his clothes. You realised that you were still sat on the floor, so you quickly got to your feet, retrieving your underwear which had been discarded, pulling your skirt back down and adjusting it to make it look like nothing had happened. Sebastian was putting his belt back on as you approached him.
“I should have used this on you.” He mentioned in passing, making you blush. “Maybe next time.”
“Sebastian, I-.” You started to speak but he held up his hand.
“I know what you’re about to say, I’m truly sorry for everything I’ve done (Y/N). I don’t want to lose you. I – I love you.” His words trailed off to a whisper at the end, sadness taking over his features. You stayed silent for a moment.
“Sebastian, I know the past couple of years have been hard for you, I don’t want to lose you either but if you carry on down the path that you’re on, I know I will. I love you too much to lose you.” You wrapped your arms around his shoulders and pulled him close, resting your head on his shoulder. His arm snaked around your waist, pulling you closer to him, one arm remained by his side. Gently, he removed his wand from his pocket, aiming it towards you,
“Imperio.” He spoke softly, a look of shock crossed your features as the spell hit, but it quickly disappeared as the curse took over. Sebastian knew he couldn’t afford to lose you. He loved you too much for that.