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fatcatscafe · 2 days ago

Text

Promise Me

Sebastian Sallow x GN reader

Summary: After a dangerous encounter with dark wizards leaves you injured and recovering in the Hogwarts hospital wing, Sebastian sneaks in to check on you. Words are spoken and unresolved feelings linger in the air.

Context: This is a continuation of my other fic but it can be read as a stand alone. This happens after the Slytherin Scriptorium quest.

Part One | Part two

You told yourself you needed rest. After enduring the searing pain of Crucio, you vowed to take a break—you deserved it.

But the following days offered little reprieve. Owls arrived incessantly, each carrying a plea for your help. Natsai wrote seeking assistance with her plans. Poppy begged for aid against poachers threatening magical creatures. Even Amit, ever the dreamer, invited you to stargaze.

You kept yourself busy, shoving aside your exhaustion and pushing through each task with determination. It wasn’t until you confronted a group of dark wizards in a grueling battle that the toll became undeniable. Victory was yours, but your body, battered and strained, finally gave in.

So, when you dragged yourself back to Natty, looking half-dead and barely upright, her reaction was immediate and fierce.

“You’re going straight to the nurse!” she demanded, her voice leaving no room for argument.

You tried to wave her off, mumbling something about chugging down some Wiggenweld potions will fix you, but the wobble in your step betrayed your words. Natty wasn’t having it. She grabbed your arm—not unkindly, but with enough force to let you know she wasn’t backing down.

So here you are, lying in the hospital wing.

Nurse Blainey gave you an earful when you arrived all bruised up. Neither you nor Natty dared to fully explain how the two of you had snuck off to track Rookwood and Harlow’s movements, only to be ambushed by dark wizards along the way.

So instead, you both decided to stick to a safer story: “It was a bad broom accident,” Natty had said smoothly.

You’d nodded along, adding, “We snuck out to fly in the middle of the night... it got out of hand.”

Nurse Blainey had narrowed her eyes, clearly unconvinced, but she let it slide—perhaps for her own peace of mind.

Now you’re left lying there, the quiet hum of the hospital wing giving you too much time to think.

Three days had passed since Sebastian, Ominis, and you ventured into the dungeons in search of Salazar Slytherin’s Scriptorium.

You hadn’t seen either of them since. The silence was deafening—no passing glances in the halls, no shared whispers in the common room. Even when you forced yourself to attend classes, neither Sebastian nor Ominis was there.

You were guessing that Sebastian had immersed himself into studying the spellbook and Omnis probably took a few days off to grieve his aunt’s death.

With a sigh, you sank deeper into the medical bed. You closed your eyes, desperate for sleep, but it was a futile effort. Someone else in the ward was snoring so loudly you might as well have been trying to rest beside a giant purple toad.

You groaned softly, shifting under the covers, when another sound caught your attention. Beneath the snoring, you could just make out a faint, irregular rattling noise. It was subtle, almost like the whisper of wind slipping through a cracked window, but there were no windows open in the hospital wing.

Focusing, you noticed the rattling sound was coming from the door. You sat up slightly, straining to listen, your heart quickening in your chest.

Suddenly, with a soft click, the door to the hospital wing slid open.

You squinted, your eyes narrowing as you peered through the dim light. Was it your imagination, or had you seen a figure crouching just inside the doorway? But when you blinked, it was gone.

Maybe it was just the nurse. Perhaps she’d forgotten to lock the door when she left for the evening. You didn’t think too deeply about it as you slid out of bed, intending to close the door yourself.

Still, a nagging feeling gnawed at you, the distinct sensation of being watched crawling up your spine. Perhaps the dark wizards had done a real number on you this time, leaving your mind jumpy and suspicious.

You barely reached the door when, out of nowhere, a pair of hands shot out from thin air, grabbing you.

Instinctively, you prepared to fight back, adrenaline surging as you opened your mouth to scream—only for the hands to clasp over your lips before a sound escaped.

“Shhhh, it’s me,” a familiar voice whispered urgently.

Your eyes widened as, piece by piece, his body materialized before you. First the outline of a face, then the curve of a smirk you recognized anywhere.

Sebastian.

“Oh, Merlin’s beard!” you hissed, your voice trembling between relief and frustration. “I was about to obliterate you into oblivion—oh, for gods’ sake, what are you doing here, Sebastian?”

His smirk widened, though there was a sheepish glint in his eyes. “I used Disillusionment to sneak in here,” he said matter-of-factly, as though sneaking into the hospital wing in the dead of night was entirely reasonable. “It was to come see you, of course.”

“Of course,” you echoed, rolling your eyes. “Because breaking into the hospital wing and scaring me half to death is such a normal way to check in on someone.”

Sebastian chuckled softly, the sound a strange mix of genuine amusement and something heavier, like guilt or worry. “Well, you weren’t exactly making it easy to find you,” he admitted. “And... I needed to make sure you were okay.”

“It was Imelda,” Sebastian said, his tone dripping with irritation. “She was going on about how she’s still the best flyer in the school, bragging endlessly as usual. And then she mentioned you.”

“Me?” you asked

He nodded “Apparently, someone told her you got into a broom accident and were lying in the hospital wing injured. Of course, she couldn’t resist turning it into another chance to proclaim herself the reigning champion of Slytherin—but that isn’t the point.”

“I didn’t believe it,” he continued, almost hesitant. “You? Getting into a flying accident? That sounded about as plausible as a troll performing ballet. So, I started thinking... maybe it wasn’t a broom accident. Maybe it had something to do with me.”

You stayed silent, waiting for him to go on.

“With the Crucio curse,” he finished, his voice laced with guilt. “I thought... maybe it was still affecting you somehow. Maybe that’s why you’re here.”

You almost wanted to laugh if it wasn’t for how serious Sebastian looked.

Before you could open your mouth to explain, a loud cough from another patient in the ward snapped both of you to attention. Your eyes darted to the other beds, realizing just how precarious this situation was. If anyone caught Sebastian here, it wouldn’t just be you getting scolded—it could mean serious trouble for him.

Sebastian glanced toward the source of the noise “Let’s go somewhere more hidden,” he whispered.

You nodded the ache in your limbs made you stumble a bit. He reached out instinctively, steadying you as you followed him to a secluded corner of the ward. The hospital dividers provided a decent amount of cover, though you both moved carefully to avoid drawing attention.

Once hidden, Sebastian let out a soft breath. “Alright,” he said, his voice quieter now but no less intense. “Talk to me. What’s really going on? And don’t you dare say it’s a broom accident.”

You hesitated, glancing at him, the shadows of the makeshift corner making his expression harder to read. But the concern in his voice, the way he leaned slightly toward you, told you he wouldn’t let this go until he had answers.

You let out a heavy sigh. Lying to Sebastian felt impossible, even if you wanted to.

“It was Rookwood and Ranrok,” you admitted quietly, your voice barely above a whisper. “Natty said she found a lead—something she thought would be worth investigating. We thought it’d be a quick look, nothing too dangerous.”

“But we ran into dark wizards along the way,” you continued, swallowing hard. “And, well... it didn’t end greatly. We fought, but there were too many of them. Natty managed to get away unscathed, but I wasn’t so lucky.” You gestured vaguely at yourself, at the bandages and bruises.

“Fool—” Sebastian snapped, his tone sharp and cutting. “You should have asked for help. Rushing in like that was reckless and downright stupid.”

Part of you understood his anger—it came from a place of concern—but the way he spoke to you only added fuel to your own frustration. You straightened slightly, your voice defensive as you shot back, “It’s not like I had a whole lot of options, Sebastian. I didn’t exactly have a list of people ready to step in and help.”

His eyes narrowed, but before he could retort, you continued, your tone laced with exasperation. “And let’s not forget—you practically disappeared after the Scriptorium. I didn’t even know if you were okay, let alone where to find you. Besides, Natty asked for my help, not yours.”

He opened his mouth as if to say something, then hesitated, guilt flickering across his face.

“I—” he began, but his usual confidence faltered, his voice quieter now. He ran a hand through his hair, a gesture that betrayed his unease. “Listen, I wanted to visit you and Ominis, I really did. But that spellbook we found?” He paused, his eyes lighting up with an intensity that was both familiar and unsettling. “It’s incredible. I’ve uncovered so much—magic and spells that are never taught at Hogwarts.”

You could hear the fervor in his tone, the way his words quickened, tinged with both excitement and desperation.

“And I know—” he continued, his voice growing more resolute, “I know that somewhere in those pages lies the answer to Anne’s curse. Something that no one else has tried. Something that might actually work.”

He looked back at you, his expression softer now, the fire in his eyes tempered by guilt. “I didn’t mean to disappear,” he admitted quietly. “I just... I didn’t know how to face you after that. After everything we went through in the Scriptorium.”

A silence stretched between you, heavy and full of unspoken words. The faint sound of the other patients’ breathing and the occasional rustle of sheets were the only noises that broke the stillness.

You wanted to say something, to fill the void, but the weight of his confession left you momentarily speechless. The vulnerability in his tone was so unlike the Sebastian you were used to—the confident, sometimes cocky boy who always seemed to have a plan.

Finally, you found your voice. “Sebastian...” you began, your tone gentle but firm. “I get it. I know how much Anne means to you, and I know you’ll do anything to help her. But you can’t shut people out—I won’t stop you in your pursuit, but just... be careful, alright?”

He let out a soft chuckle, shaking his head. “Could say the same thing right back at you.”

You raised an eyebrow, a small smirk tugging at your lips despite the tension. “Touché.”

Sebastian’s smile lingered, but the weight of everything unsaid still hung in the air. “I mean it,” he said after a beat. “You’re the one lying in a hospital bed right now, not me. You need to be careful too. I don’t think I could handle...” He trailed off, his gaze steady with yours.

“You won’t lose me, Sebastian,” you said softly, your tone steady. “I promise.”

He looked up at you then, something unspoken passing between the two of you. For a moment, it felt like the world outside the hospital wing didn’t exist—the dark wizards, the curse, the spellbook. It was just the two of you, sharing a fragile but meaningful connection.

Perhaps the two of you were too absorbed in the moment, lost in the intensity of the conversation and the connection you shared, to notice the time slipping by. It wasn’t until the faint glow of dawn began to filter through the hospital wing’s windows that you realized how long Sebastian had been there.

The quiet creak of the door opening made your stomach drop. Nurse Blainey stepped inside, a clipboard in hand as she began her early morning rounds, her sharp eyes scanning the ward.

You turned to Sebastian, panic flickering in your gaze. “You need to go. I’ll distract her. You sneak out. I can’t have you caught twice because of me.”

“Wait!” Sebastian grabbed your hand, his grip firm but gentle. “Before you go, I—” He hesitated, fumbling inside his robes. “I wanted to give you this. Honestly, I thought you’d be asleep when I came in, but...”

He reached into his robes and pulled something out. It was a crumpled piece of parchment, which he pressed into your hand.

“Before you say anything,” he said softly, his voice uncharacteristically vulnerable, “just... read it later, when you’re alone.”

You stared at the note in your hand, your mind racing with questions, but the look in his eyes stopped you from prying further. There was something raw there, something he wasn’t ready to say aloud.

You hear Nurse Blainey walking closer now, “Sebastian,” you whispered urgently, “you need to go. Now.”

With a reluctant nod, he began to activate his Disillusionment Charm again, the shimmer of magic cloaking his figure. Before he disappeared entirely, he whispered, “Be careful. And thank you.”

You gave Sebastian a small smile before turning and walking away from the corner to Nurse Blainey. She was definitely mad, seeing you up and walking around despite her clear instructions to stay put.

As she continued to lecture you, saying something along the lines of, “If you’re well enough to walk around, you’re well enough to attend class,” you caught sight of the faint shimmer of Sebastian under the Disillusionment Charm.

He paused briefly, his figure lingering near the doorway. His gaze—though invisible—felt fixed on you for a fleeting moment before he quietly slipped away, disappearing into the early morning light.

You held Nurse Blainey’s gaze, nodding along to her lecture, but your thoughts were elsewhere. As the faint shimmer of Sebastian disappeared from sight, a small smile tugged at your lips.

Once she finally moved on, you scurried back to your bed and pulled out the crumpled note Sebastian had pressed into your hand. Your fingers trembled slightly as you unfolded it, revealing the hurriedly scrawled words:

“You matter more to me than you know. Don’t you dare forget that. -S”

You stared at the words, your heart tightening as you reread them. Whatever doubts you’d carried about where you stood with him, this was his answer—a truth he couldn’t bring himself to say aloud but had etched onto the parchment instead.

The sun’s rays spilled into the ward, painting everything in a soft, golden hue. For the first time in days, you felt the tension in your shoulders ease.Sebastian might be infuriatingly stubborn, but beneath it all, his heart was in the right place.

And that was enough.

For now, at least.

Author's note: i hope you enjoyed that! i'm working on the third part where omnis and the mc get more interaction.

#hogwarts legacy #sebastian sallow x reader #sebastian sallow #hogwarts legacy mc #fluff #hogwarts legacy sebastian #gender neutral reader

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