PAIRING ê° Sirius Black x Fem!Slytherin, Pureblood Reader ê±
[ đŁČâ] â Marauders era, reader is a Slytherin, ever since slughorn made reader and sirius partners in potions during their third year, sirius had made it his goal to always harass reader in classes because they both ended up always getting the same classes, and youâre basically his favorite slytherin at this point. One day, Sirius had a miraculous idea when Remus was reading a book and it had a topic about bodyswap. Who else would volunteer willingly to do such experiment other than you?(James but thatâs another story). You were quite hesitant but curiosity won over you.
content & warnings ê° No Archive Warnings Apply :: Incompetent Body Swappers :: Remus is highly observant :: slowburn? :: suspicious slytherins :: no kissing while body-swapped :: fluff and humor :: reader is dryly sarcastic and intelligent :: OOC :: usage of (Name) instead of y/n :: 13k words ê±
AUTHORâS NOTE ê° English isnât my first language! So expect bad grammar. I made a lot of these up with the help of my friend and my very fantasizing brain. I made most of these up actually. ê±
âBlack.â
âMerlinâs beard⊠It actually worked!â Sirius barked with laughter. With your voice. You didnât even know your own vocal cords could make a sound like that.
You stared at yourself in the classroom mirror. Was that even you, or was it Sirius? You were already having an identity crisis, and youâd only been swapped for a minute. You looked down at your hands, then back up at the glass. You were currently inhabiting a tall, young man with messy black hair and stormy grey eyes.
Slowly, you reached up to touch your new cheekbone. This was highly surreal.
Then, reality hit. Wait. What is Sirius going to do with my body?
âSirius! Donât go out there yet. We have to talk about this,â you warned, catching him by the sleeve of your own Slytherin robes.
Sirius stopped in his tracks, looking down at your hand on hisâwell, yourâarm.
âWhat are you planning to do with my body?â you demanded, keeping a tight grip so he couldn't bolt.
Sirius, wearing your face, simply shrugged. âI dunno. Troll around a bit?â
You sighed, pinching the bridge of yourâor rather, hisânose. âLetâs just switch back before our friends find us.â
Sirius let out a dramatic groan. âAlright, alright. Guess Iâll just have to swap with someone else next time.â
You gave him a dry, sarcastic smile. âAs long as itâs not me, I couldnât care less.â
Pulling out your wands, you both raised them and began to recite the reversal incantation.
Nothing happened.
You stared back at the mirror. You were still looking at the handsome, exasperated face of Sirius Black. You glanced over at your actual body; Sirius was looking down at his hands, equally bewildered.
âDid the incantation not work?â you muttered.
Sirius looked down, his eyes landing on the wand in your hand. âHold on. Is that my wand?â
You looked down. The wood was entirely wrong. âAh. Right.â
âMaybe we should use our own wands?â he suggested, gesturing between the two of you.
You let out a soft hum of agreement and quickly swapped the wands back to their rightful owners. Taking a deep breath, you raised your own wand, pointed it at Sirius, and repeated the counter-spell.
Still, absolutely nothing happened.
A beat of heavy silence hung in the air. Then, Sirius let out a panicked, undignified shriek. He stared at his handsâyour handsâin pure terror.
âNo, no, no! I'm stuck!â he cried.
You, on the other hand, sank onto the stone floor in sheer frustration. Your body was currently being occupied by the most chaotic, annoying boy in Hogwarts.
Sirius began to pace the length of the classroom, biting his thumb as if the pain would wake him up. âWhat do we do now?! We need to get this sorted, fast!â
âI know that!â you grumbled, leaning your head against the cold wall.
How on earth had you let him drag you into this?
[ đŁČâ]
An hour earlier...
âHey! Psst!â
Siriusâs finger poked aggressively into your shoulder while Professor Slughorn was in the middle of explaining the properties of a new potion.
You rolled your eyes, turning your head just enough to glare at him. âWhat now, Black?â
âIâve got a brilliant experiment to test,â Sirius whispered, a dangerous spark of mischief in his grey eyes.
You raised an eyebrow. âOkay. And? What exactly does that have to do with me?â
Sirius let out a quiet chuckle. âYouâre going to help me test it.â
âAbsolutely not,â you replied instantly.
âWhy not?â
âBecause your 'experiments' always end in a trip to the hospital wing or a month of detention.â
âOh, come on! This one is actually brilliant,â Sirius pleaded, clasping his hands together in a mock prayer.
âCanât you get Potter or Lupin to do it with you?â you questioned, turning back to your notes.
Sirius rolled his eyes. âIf I could, do you think I'd be begging a Slytherin?â
âFair point. So why canât you?â
Sirius sighed, running a hand through his dark hair. âJames is too busy trying to corner Lily Evans to ask her to Hogsmeade, Remus has his nose buried so deep in a book he wonât even look at me, and Peter⊠well, I donât think he could pull it off. Youâre honestly the best person for the job.â
âStill a no.â
âArenât you even a little bit curious about what it is?â
You paused, your quill hovering over your parchment. You hated your own curiosity. It was your absolute worst trait.
âFine,â you muttered. âTell me.â
Siriusâs face lit up. âBody swapping.â
You grimaced, looking at him like he had lost his mind. âBody swapping? Are you mental, Black?â
âItâll be quick! I swear I wonât do anything weird.â
âHow can I trust you? Youâve said that exact phrase to half the school right before setting off a dungbomb.â
âTouchĂ©,â Sirius grinned. âBut seriously. Aren't you dying to know if the magic works?â
He had you there. You were curious.
Before you could argue, Slughornâs voice boomed from the front of the classroom. âMr. Black! Ms. (Last Name)! As much as I am delighted to see inter-house cooperation, I must ask you to save the social hour for later. Perhaps you two would care to answer my next questions?â
The classroom went dead quiet. Dozens of eyes turned to lock onto the two of you at the back of the room.
You swallowed hard and nodded.
âExcellent!â Slughorn beamed. âNow, Ms. (Last Name), can you tell the class what the Draught of Living Death is?â
You cleared your throat, relying on your memory. âThe Draught of Living Death is an incredibly powerful, advanced sleeping potion. It induces a profound, death-like slumber, putting the drinker into an indefinite sleep. Because of its strength, it is highly dangerous if brewed incorrectly or misused.â
âSpot on! Ten points to Slytherin,â Slughorn smiled, turning his gaze. âAnd Mr. Black? Can you tell us the key ingredients, and the cure?â
Sirius didn't even blink. He leaned back in his chair, radiating effortless confidence. âThe Draught of Living Death requires Powdered Root of Asphodel, an Infusion of Wormwood, Sloth Brain, and the juice of a Sopophorous Bean. And if youâre unfortunate enough to drink it, you can be revived using the Wiggenweld Potion.â
âRemarkable! Ten points to Gryffindor as well.â Satisfied, Slughorn turned back to the blackboard, and the attention of the class drifted away.
Sirius immediately leaned back over to you, his grin wider than before. âSo? Are you in?â
You had hesitated. The magic was complex, risky, and highly unauthorized. But your Slytherin ambition and raw curiosity won out.
âFine,â you whispered.
[ đŁČâ]
And that was how you had ended up on the floor of an abandoned classroom, staring at your own face.
âI should have never agreed to this,â you snapped, standing up and brushing off Siriusâs trousers. âYou have absolutely no idea what youâre doing!â
âHey, the spell worked! We just⊠need to figure out the exit strategy,â Sirius muttered, looking down at hisâyourâchest. He paused, a sudden, horrifying thought crossing his expression. âWait. How do girls pee?â
âExcuse me?â
You stared at him, your stomach doing a backflip of pure disgust.
âYou heard me,â he said, entirely shameless. âHow do you ladies manage it? What do I do?â
âWhy on earth are you asking me that right now?!â
âBecause what if I have to go? I need to be prepared!â
âThen hold it!â You felt a sudden surge of panic. Under no circumstances could you let him wander into the girls' lavatory in your body. âActually, no. Just⊠donât go. At all.â
You grabbed him by the shoulders of your own robes. âBlack, can you use your brain for once? We have to switch back. Now.â
âAlright then, if you think Iâm not using my brain, then what should we do?â Sirius challenged mockingly, resting his chin in his hand with an exaggerated, pouty frown.
âIââ You paused, your mind racing, but finding absolutely nothing. âI donât know.â
âFigures.â
You glared at him. It was an incredibly trippy experience, watching your own eyes roll back at you with a lazy, arrogant amusement you had never once portrayed in your life.
âDonât look at me like that using my own face, Black,â you hissed, crossing his arms over his chest.
Before Sirius could retort, the giant clock bell in the courtyard began to toll, the heavy gong vibrating right through the stone floor beneath your feet.
The color instantly drained from yourâwell, hisâface.
âOh, Merlin,â you whispered, staring up toward the window. âItâs two oâclock. We have Transfiguration.â
Siriusâs smug expression vanished, replaced by a sudden, rigid terror. âWith McGonagall? Together?â
âNo, worse,â you said, the panic finally clawing its way up your throat. âSlytherins have double Potions with Slughorn. Gryffindors have McGonagall. Which means you have to go pretend to be a quiet, perfect Slytherin in the dungeons, and I have to go sit next to Potter and pretend I know how to turn a teacup into a gerbil in front of the most observant witch in Hogwarts.â
Sirius stared at you, hisâyourâmouth hanging slightly open. âOkay. Okay, don't panic. We just need a crash course. Fast.â
The panic in the dusty classroom was practically palpable, thick enough to choke on. The grand clock in the courtyard had finished its two o'clock toll, leaving a heavy, ringing silence in its wake.
âA crash course,â you repeated, your voiceâno, Siriusâs deep voiceâsounding incredibly foreign in your ears. You gripped his robes, your mind racing. âWe have exactly three minutes before the hallways clear and McGonagall starts locking her classroom doors. Start talking, Black. How do I act like you?â
Sirius, currently wearing your face and your green-trimmed Slytherin uniform, took a step back. He crossed your arms over his chest, a slow, ridiculously smug grin spreading across your lips. It was highly unsettling to see your own features look so effortlessly mischievous.
âWell, first of all, youâre slouching,â Sirius said, pointing a finger at you. âI donât slouch. I lean. Thereâs a difference. Itâs all about looking like you own the room, even when youâre about to get detention. Youâve got to walk like youâve got a secret, and that secret is that youâre better than everyone else.â
âI am a Slytherin, Black. I already know how to look superior,â you snapped, adjusting the red-and-gold Gryffindor tie that felt like a choke collar around your neck. âWhat else?â
âRight. James,â Sirius said, his expression turning slightly more serious. âJames is going to throw his arm around your shoulders. He does it every five minutes. Do not flinch, do not curse him, and whatever you do, do not call him âMr. Potterâ or whatever formal nonsense you use in the dungeons. Just call him James. Or, if heâs being particularly annoying, just call him Prongs.â
You blinked. Prongs? What kind of ridiculous pureblood nonsense nickname was that? You didnât have time to ask.
âAnd Remus?â you pushed, running a hand through Siriusâs dark, unruly curlsâwhich, you had to admit, were incredibly soft.
âRemus is the smart one. Heâll be reading,â Sirius explained, gesturing vaguely with his hands. âIf he asks to see your Transfiguration essay, tell him you lost it. If he calls you Padfoot, just roll your eyes and ignore him. Heâll think youâre just in a mood. Oh, and Peter will probably ask to copy your notes. Just tell him to ask Remus.â
Padfoot. Another absurd word. You filed it away in your mind, praying you wouldn't have to use it.
âAlright, my turn,â you said, stepping closer to him, towering over your own body. It was a bizarre sensation, being the taller one for once. You gripped Sirius by the shouldersâyour shouldersâand forced him to stand up straight. âListen to me carefully. You cannot bounce. Slytherins do not bounce when they walk. Keep your chin up, your shoulders back, and look incredibly bored. If anyone from my house tries to speak to you, just give them a short, cold nod and keep walking.â
Sirius looked up at you through your own eyelashes, a teasing glint in his eyes. âA cold nod. Like this?â He attempted a stiff, robotic jerk of his head.
âNo, absolutely not. You look like a broken grandfather clock,â you groaned, rubbing your temples. âAnd donât smile! I do not smile at people in the corridors. Especially not the Gryffindors. If you see James or Remus, you have to ignore them. If they try to wave at you, look right through them.â
Siriusâs eyes softened slightly, a softer, surprisingly gentle expression appearing on your face. âYou know,â he murmured, his voiceâyour voiceâdropping to a quiet, intimate register. âIâve spent the last three years sitting next to you in Potions, watching you ignore me. I think Iâve got your âbored, mysterious Slytherinâ act down to an art form.â
Your breath hitched. You stared at him, caught off guard by the sudden intensity in his eyes. Ever since Slughorn had paired you together in your third year, Sirius had made it his personal mission to pester you, tease you, and steal your ingredients just to get a reaction out of you. You had always assumed you were just an easy targetâa stubborn Slytherin who refused to give him the satisfaction of a reaction. But hearing him admit heâd been studying you so closely sent a strange, fluttering warmth through your chest.
Before you could dwell on it, the distant sound of heavy wooden doors opening echoed from the corridor outside. Class was letting out. The hallways were about to be flooded with students.
âTimeâs up,â you whispered, your heart hammering against Siriusâs broad ribs.
âRight,â Sirius said, taking a deep breath. He smoothed down the front of your Slytherin robes, his posture shifting. In an instant, the lazy, hyperactive Gryffindor energy vanished. His shoulders set, his chin tilted upward, and his eyes cooled into a perfect, detached glaze.
It was terrifyingly accurate. He looked exactly like you.
âHow do I look?â he asked, his voice dripping with smooth, effortless Slytherin disdain.
âHorrifyingly perfect,â you admitted. âDonât make me regret this, Black.â
âNever,â he whispered, giving you one last, fleeting wink with your own eyes before turning and slipping out the classroom door, blending seamlessly into the sea of students rushing down the hall.
You stood alone for a fraction of a second, taking a deep breath of your own. Act cool. You are Sirius Black. You own the school.
With a mental prayer to Merlin, you pushed open the door and stepped out into the chaotic, bustling corridor.
Immediately, the sensory overload of being Sirius Black hit you. He was tall, which meant you could see over the heads of most of the younger years, but it also meant you were a walking target. Within three steps, a younger Gryffindor girl waved at you, squeaking a shy, âHi, Sirius!â
You panicked, offering a stiff, awkward wave back. Shoot. Was that too friendly?
Before you could analyze it, a heavy arm suddenly draped itself over your shoulders, nearly knocking you off balance. You gasped, turning your head to find James Potter grinning widely at you, his messy black hair sticking up in every direction.
âThere you are, Padfoot!â James yelled over the din of the hallway, completely oblivious to your rigid posture. âWhere did you run off to after Potions? Remus said you went to the library, but I knew that was a lie. You wouldnât go to the library unless someone threatened to dye your hair green.â
Your mind went completely blank. Padfoot. He had called you Padfoot.
âAh⊠right,â you squeaked, your voice cracking slightly before you forced it down into Siriusâs usual lazy register. âJust⊠had to take care of something. In the bathroom.â
James paused, squinting at you through his round glasses. He leaned in closer, his hazel eyes scanning your face. âAre you alright? You look a bit⊠pale. And why are you standing so straight? Did McGonagall finally curse your spine?â
From behind James, Remus Lupin appeared, clutching a thick leather-bound book to his chest. His pale, scarred face wore an expression of mild amusement, but his sharp amber eyes were fixed on you with a quiet, observant intensity.
âHeâs probably just dreading the Transfiguration quiz, James,â Remus said softly, turning a page of his book without looking up. âThough, usually, Siriusâs coping mechanism is to complain loudly, not stand there like a Buckingham Palace guard.â
You felt a sweat break out on the back of your neck. These boys knew Sirius inside and out. If you didnât do something characteristicâand do it fastâthey were going to figure out something was wrong before you even made it to the classroom.
Desperate, you thought back to Siriusâs advice. Youâve got to walk like you own the room.
You forced your shoulders to drop, adopting what you hoped was a lazy, arrogant slouch. You reached up and ran a hand through your curls, letting out a heavy, dramatic sigh.
âIâm fine, mate,â you drawled, trying to channel Siriusâs signature drama. âJust exhausted. Slughornâs lecture was incredibly dry today. Honestly, I think my brain has turned to mush.â
James let out a loud laugh, slapping your back. âNow that sounds like you. Come on, weâd better get to class before McGonagall locks us out. I want to see if I can transfix my teacup to look like Lilyâs face.â
âThat is highly creepy, James,â Remus muttered, finally closing his book with a soft thud.
As the three of you began to walk toward the Transfiguration classroom, you glanced over the banister of the grand staircase, looking down toward the entrance of the dungeons.
Down below, walking gracefully through the crowd of green-and-silver robes, was your own body. Sirius was walking perfectly, his chin tilted up, exuding a cold, untouchable aura. But just as he reached the dungeon stairs, he caught your eye from across the moving staircases.
Using your face, Sirius slowly raised two fingers to his temple, throwing you a cheeky, mocking salute, before disappearing into the shadows of the dungeons.
You swallowed hard, turning back to James and Remus.
Merlin help me, you thought, I am going to kill him when this is over.
The heavy oak doors of the Transfiguration classroom shut behind you, sealing you into a room filled with chatter, desks, and the intimidating presence of Professor McGonagall.
You slid into the seat next to James, your heart doing double-time inside Siriusâs chest. On your other side, Remus took his seat, immediately setting down his inkwell and quill with a quiet precision that made you incredibly nervous.
âRight then,â McGonagall's sharp voice cut through the room, instantly silencing the class. âToday we are progressing to animative transfiguration. You will find a teacup on each of your desks. By the end of the double period, I expect to see those teacups breathing, whiskered, and scurrying. Teacups to gerbils. Wands at the ready.â
You stared at the floral teacup in front of you. Normally, you excelled at Transfiguration. But you excelled at it using your wand, your hands, and your muscle memory.
âWatch this, Padfoot,â James whispered, leaning over your shared desk. He gave his wand a flashy, aggressive twist. âVertecalis!â
His teacup sprouted a pair of fuzzy brown ears and a tiny, twitching tail, though the body remained entirely ceramic and printed with pink roses. James grinned, clearly pleased with himself. âYour turn. Letâs see if you can actually do it on the first try today. Ten Galleons says yours ends up with a handle for a nose again.â
You swallowed hard. You gripped Siriusâs wand. As a Slytherin, you had been trained in precise, elegant wand movementsâsharp angles and minimal effort. You raised the wand, cleared your throat, and performed a perfect, fluid, and highly disciplined wrist flick.
âVertecalis.â
With a soft poof of purple smoke, your teacup transformed completely into a perfect, sleek, brown gerbil. It squeaked, blinking its tiny black eyes, and began to groom its whiskers on the wooden desk.
Silence fell over your desk.
James stared at the gerbil. Then he stared at you. Slowly, his brow furrowed, and a little flicker of suspicion crossed his face.
âSince when do you do the wrist flick like that?â James asked, squinting through his glasses. âAnd since when do you get it perfect on the first go without shouting the incantation like a battle cry?â
âI... practiced over the weekend,â you lied smoothly, trying to copy Siriusâs lazy, dismissive shrug. âDecided to show you up for once.â
Jamesâs suspicion melted into a competitive grin. âOh, is that how it is? Practicing in secret? You absolute traitor. I see how it is.â He immediately turned back to his half-ceramic beast, muttering, âWell, mineâs going to have a better coat of fur, just you watch...â
You let out a silent breath of relief. James was too easily distracted by his own ego to dig any deeper.
Remus, however, was a completely different story.
From the desk beside yours, Remus hadnât even picked up his wand yet. He was leaning back, his amber eyes narrowed slightly as he watched you.
âSirius,â Remus said, his voice quiet, almost casual.
âYeah?â you turned, trying to look bored.
âWhereâs your leather jacket?â
Your hand instinctively flew to the collar of the red-and-gold Gryffindor robes you were wearing. Crap. Sirius never wore his school robes properly. He almost always wore his muggle leather jacket over his uniform, or at the very least had his robes draped haphazardly over one shoulder. You had put the uniform on perfectly, buttoned up to the collar, because your Slytherin brain couldn't stand looking messy.
âOh. Uh. Itâs in the dorms,â you stammered, trying to cool your tone. âThought Iâd... follow the dress code today. Keep McGonagall off my back.â
Remusâs eyebrows rose. It was a look of pure, unadulterated skepticism. âYou. Following the dress code. To keep McGonagall off your back.â
âYes?â
âThe same McGonagall who gave you three detentions last week for wearing a muggle band t-shirt to breakfast?â Remus asked, his voice dripping with suspicion.
âIâm trying to be a reformed man, Remus,â you grumbled, pulling on Siriusâs curls againâa nervous habit you were quickly developing.
Remus didn't answer. He just kept staring at you, his analytical mind clearly putting pieces of a puzzle together.
To make matters worse, you had to take notes. When McGonagall began writing the theoretical breakdown of the transfiguration on the blackboard, you dipped Siriusâs quill in ink and began to write. Because you were panicking, you forgot to mimic Siriusâs chaotic, giant, messy scrawl. Instead, your hand naturally flowed into your usual, elegant, cursive handwritingâneatly spaced, perfectly aligned.
Suddenly, a shadow fell over your parchment.
You looked up. Remus was leaning over the gap between your desks, his eyes locked onto your notebook. His gaze slowly traveled from the neat, flawless cursive up to your face.
âYour handwriting is beautiful today, Sirius,â Remus murmured, his voice laced with a dangerous amount of suspicion. âIt almost looks like... calligraphy.â
âIâm... trying a new style,â you squeaked, quickly closing the notebook.
âRight,â Remus said slowly, leaning back into his seat. He didn't say another word, but the look he gave you said everything.
He knew. Or, at the very least, he knew you were absolutely not Sirius Black.
You swallowed the lump in your throat and stared straight ahead at the blackboard, silently screaming at Sirius in your mind. If you blow my cover in the dungeons while Iâm being interrogated by a werewolf, Black, I will personally throw you into the Black Lake.
While you were busy surviving a soft interrogation by Remus Lupin, Sirius was having the time of his life.
Slughornâs double Potions had been a breeze. All Sirius had to do was sit at your desk, pretend to take notes, and occasionally sneer at a Gryffindor who looked his way. Heâd actually found it incredibly liberating to just glare at people and have them instantly back off. So this is the power of a Slytherin, heâd thought, highly amused.
But now, class was over, and Sirius had a much bigger mission. He was heading down to the dungeons.
For three years, heâd heard rumors about the Slytherin common room. Gryffindors always painted it as a dark, damp, vampire-esque dungeon filled with skulls and dark magic. Sirius, being Sirius, was dying to see if they kept a giant squid in a glass wall or if the sofas were actually made of dragon leather.
He descended the cold stone steps, your black robes swishing elegantly around hisâor rather, yourâankles. He had to admit, your posture was excellent. Walking straight made him feel remarkably imposing.
He stopped in front of the damp stone wall that hid the entrance.
Wait.
Sirius froze. The password.
"Uh," Sirius muttered under his breath, staring at the blank stone. He racked your brainâor his brainâtrying to remember if you had ever mentioned it. You hadn't. Desperate, he tried the first pureblood, dramatic thing that came to mind.
"Salazar?" he whispered.
Nothing.
"Basilisk? Pure-blood? Slughorn is a coward?"
The wall remained stubbornly shut. Sirius was just about to kick it in frustration when a cold, drawling voice spoke up from behind him.
"Are you having a stroke, or did you simply forget how to speak?"
Sirius whirled around. Standing there, looking incredibly unimpressed, was Regulus Black.
Siriusâs heart did a strange, sudden flip. Seeing his little brother from this perspective was bizarre. Usually, when they crossed paths in the corridors, Regulus looked at him with a mix of anger, disappointment, and hurt. But right now, looking at Sirius (who was in your body), Regulusâs grey eyes were completely neutralâjust mildly annoyed by a classmate blocking the door.
"Well?" Regulus asked, eyebrow arched.
"Iâ" Sirius caught himself, quickly dropping his voice to mimic your tone. He cleared his throat. "I was just... thinking. Lost my train of thought."
Regulus rolled his eyes, a familiar, aristocratic gesture that made Sirius want to laugh. "Veridian," Regulus muttered to the wall.
The stone bricks slid aside, revealing the low-panelled, green-lit warmth of the Slytherin common room.
Siriusâs eyes widened as he stepped inside. It wasn't a damp cave at all. It was incredibly grand. Heavy, dark wood bookcases lined the walls, stuffed with ancient-looking volumes. Luxurious, deep-green leather armchairs were gathered around a massive hearth where a crackling green fire burned, casting long, dramatic shadows. Through the thick, reinforced glass windows, the dark, murky waters of the Black Lake rippled, with the occasional silhouette of a grindylow drifting past.
"Brilliant," Sirius breathed out, entirely forgetting to act like you.
Regulus paused, turning back to look at him. "Brilliant? You've lived here for five and a half years. Are you high on firewhisky?"
"Just... appreciating the architecture, Black," Sirius recovered quickly, giving Regulus a cool, lazy nod.
Regulus stared at him for a second longer, his silver eyes narrowing just a fraction. There was a brief, tense moment where Sirius wondered if his own brotherâs sharp instincts would see right through the magic. But Regulus just let out a quiet, dismissive huff and walked over to a corner table where two other boys were sitting.
Siriusâs eyes followed him. He recognized them instantly: Barty Crouch Jr. and Evan Rosier.
Barty was currently balancing his wand on his nose, looking incredibly bored, while Evan was lazily flipping through a Herbology textbook.
"There you are," Barty called out as Sirius approached, his eyes lighting up with a chaotic spark. "We thought Slughorn kept you behind to clean cauldrons again. What took you so long? And why were you standing outside the wall like a gargoyle?"
"Forgot the password," Sirius said, sliding into an empty armchair next to them. He leaned back, crossing his legs and resting his ankle over his kneeâa very casual, Gryffindor way of sitting.
Evan looked up from his book, his eyes dropping to Siriusâs legs, then up to his face. "Since when do you sit like that?"
Sirius blinked, realizing his mistake. He quickly uncrossed his legs, sitting up a bit straighter. "Cramp. Leg cramp."
"Right," Evan said slowly, not looking entirely convinced. "Anyway, did you get the notes from Slughorn? I slept through the entire lecture on the Draught of Living Death."
"Oh, yeah. I've got them," Sirius said smoothly, reaching into your bag. He pulled out your parchment and handed it over.
Barty leaned over Evanâs shoulder to look at the parchment, only to let out a loud, dramatic groan. "What is this?"
"My notes?" Sirius offered, brow furrowing.
"This isn't your writing," Barty said, pointing a finger at the parchment. "Your handwriting is always neat and tiny. This looks like a Hippogriff ran over the page with ink on its talons. It's massive. And half of these words are misspelled."
Sirius stared at the parchment in horror. He had taken the notes. In his handwriting. Which meant your beautiful, perfect Slytherin notebook now looked like a giant, messy scribble.
"I... was writing fast," Sirius lied, his voice dropping an octave as he tried to sound defensive. "Slughorn was talking quickly."
"He speaks at the pace of a dying snail," Regulus noted quietly from across the table, not looking up from his homework.
Evan squinted at the parchment, then looked up at Sirius, his eyes analyzing your face. "Are you feeling alright? You've been acting weird since you walked in. You look... louder. If that makes sense."
"I am perfectly fine," Sirius insisted, his jaw tightening. He was starting to realize that surviving in the Slytherin house wasn't about being meanâit was about being incredibly quiet and consistent. And he was failing miserably at both.
Barty grinned, a mischievous, dangerous look crossing his face as he leaned forward. "Wait a minute. You didn't actually do that ridiculous body-swap experiment with Black, did you? I saw him whispering to you in class."
Siriusâs heart stopped. He stared at Barty, his mind racing for a lie, praying his face wouldn't betray the sheer panic he was feeling.
The walk to the Transfiguration classroom had been three minutes of absolute, sweat-inducing torture, but sitting down inside McGonagallâs class was infinitely worse.
You were sat at a long wooden desk with James on your left and Remus on your right. Peter was sitting just behind you, occasionally leaning forward to snort at whatever James was doing.
Having successfully dodged Remusâs sharp questions about your handwriting and lack of a leather jacket, you desperately tried to focus on the task at hand. You needed to blend in. You needed to act like Sirius Blackâor at least, a slightly quiet version of him.
âAlright, Padfoot,â James whispered, leaning over the desk and pointing his wand at his half-transfigured, rose-printed teacup. âDouble or nothing. I bet you five Galleons you canât make your gerbil do a backflip.â
âWeâre supposed to be taking notes on the theory of organic molecular shifting, James,â Remus murmured from your other side, his quill scratching steadily against his parchment.
âOh, live a little, Moony,â James grinned, nudging your elbow with his own. âCome on, Pads. Show him how itâs done. Youâve been quiet today. Usually, youâd have turned your teacup into a dungbomb by now to get us out of the double period.â
You forced a lazy, reckless grin onto Siriusâs handsome face, though your insides were twisting into knots. âIâm just saving my energy, Potter,â you drawled.
James froze.
The scratching of Remusâs quill abruptly stopped.
Even Peter, who had been lazily balancing an inkwell on his knee behind you, went completely still.
You stared at them, your heart stopping. What did I say?
Jamesâs hazel eyes narrowed behind his round glasses. âPotter?â he repeated, his voice dropping. âSince when do you call me Potter unless youâre incredibly pissed off at me? Or unlessâŠâ James gasped, a sudden look of mock horror crossing his face. âPads, did you get sorted into Slytherin in your sleep? Who are you and what have you done with my best mate?â
âIâI was joking,â you stammered, frantically trying to recover. You let out a forced, bark-like laugh that sounded incredibly hollow. âJust a bit of banter, mate. You know. Keeping you on your toes.â
James stared at you for a second longer before his easygoing nature won out. He snorted, shaking his head. âYouâre weird today. Seriously. If I didn't know any better, I'd say you actually did some studying over the weekend and it broke your brain.â
You let out a weak chuckle, pretending to focus back on your perfectly formed gerbil.
But you could feel Remusâs eyes on you.
The sandy-haired boy hadn't resumed writing. He was leaning back in his chair, his arms crossed over his chest, studying you with an incredibly sharp, analytical gaze.
âPeter,â Remus said quietly, not breaking eye contact with you.
âYeah, Moony?â Peter piped up from behind.
âWhat did Sirius eat for breakfast this morning?â
âUhâŠâ Peter blinked, thinking hard. âFour pieces of toast, half of Jamesâs bacon, and he spilled pumpkin juice all over his transfiguration essay. Why?â
Remus didn't answer Peter. Instead, he leaned closer to you, lowering his voice so James, who was currently trying to make his half-gerbil-half-cup fetch a crumpled piece of parchment, wouldn't hear.
âYou didnât spill pumpkin juice on your essay, Sirius,â Remus whispered, his amber eyes locking onto yours. âBecause when I asked you for it earlier, you told me you lost it. And you haven't touched your pumpkin juice in three days because you claimed the house-elves were trying to poison you with it.â
You felt a drop of cold sweat slide down your temple. You gripped the edge of the desk, your knuckles turning white. âI⊠forgot,â you muttered, trying to sound dismissive. âMy memoryâs shot today, Remus.â
âAnd your posture is perfect,â Remus continued, his voice dangerously calm, almost fascinated. âAnd youâre holding your quill with a thumb-and-two-finger grip. Sirius holds his like a caveman clutching a club. Furthermore, you haven't looked at the door once to see if Evans is walking by, and you haven't tried to kick Jamesâs chair even once.â
You swallowed hard. You were trapped. This boy wasn't just smartâhe was terrifyingly observant.
âWho are you?â Remus asked softly, a small, knowing smirk tugging at the corner of his mouth. âAnd what did you do with Sirius?â
The sheer, suffocating weight of Remus Lupinâs gaze was enough to make you want to vanish on the spot. You were frozen, your hand gripping Siriusâs wand so tightly the wood dug into your palm. You opened your mouth to stammer out another desperate lie, but before a single sound could escape your throat, the classroom door was suddenly thrown open.
In walked your own body.
Siriusâlooking pristine, poised, and utterly out of place in your Slytherin robesâstrode into the Transfiguration classroom with a look of frantic, barely concealed panic written across your features. He didnât even glance at McGonagall. He marched straight toward the Gryffindor table, grabbed you by the forearm of his leather-jacket-clad arm, and hauled you out of your seat.
âExcuse us, Professor,â Sirius said, using your smooth, melodic voice to address a thoroughly baffled McGonagall. âAn urgent prefect matter. Student council. Slytherin business. We must go.â
âMs. (Last Name), Mr. Black, what is the meaning ofââ McGonagall began, her glasses slipping down her nose, but Sirius was already dragging you backward out of the classroom.
James blinked in utter confusion, his half-gerbil-teacup screeching as it fell off the desk. Remus, however, didnât look confused at all. He simply watched the two of you bolt, a slow, knowing, and deeply amused smile spreading across his face. He knew exactly what was happening now.
Sirius didnât stop running until he had dragged you up a flight of moving stairs, down a deserted, tapestry-lined corridor, and shoved you into a dusty, unused broom closet, slamming the heavy oak door shut behind you.
The space was incredibly cramped. Surrounded by broken cauldrons and smelling heavily of lemon-scented floor wax, the two of you were pressed nearly chest-to-chest. Because of the height difference, youâin Sirius's tall, broad bodyâwere looming over your own physical form.
âAre you completely insane?!â you hissed, your deep, rumbling voice vibrating in the small space. âYou just dragged me out of McGonagallâs class! Remus already knows, Black! He practically dissected me! He knew I wasnât you the second I wrote a sentence in legible cursive!â
âOh, you think you had it rough?â Sirius gasped, his handsâyour delicate, soft handsâgrabbing the lapels of his leather jacket. He looked up at you with your own eyes, which were wide and frantic. âBarty Crouch Jr. is a absolute menace! I walked into the Slytherin common room and within five minutes he asked if I was high on bubotuber pus because I forgot the password! And then I handed him your notesââ
âMy notes?â you whispered, a horrible dread pooling in your stomach. âWhat did you do to my notes?â
âI wrote them,â Sirius squeaked defensively, using your voice. âBut apparently your friends think you write like a muggle typewriter, because Barty took one look at my handwriting and asked if a Hippogriff had run over the parchment. He literally asked if we did a body-swap spell! I had to fake a massive coughing fit and run out of the dungeons before they pinned me down and forced me to drink Veritaserum!â
You closed your eyes, leaning your head back against the wooden wall of the closet. âWe are doomed. We are going to be expelled. Or worse, my housemates are going to think Iâve lost my mind and lock me in St. Mungoâs.â
âHey,â Sirius murmured.
You opened your eyes.
Because of the tight space, Sirius was looking up at you, hisâyourâface only inches from yours. It was the strangest, most intoxicating sensation. For three years, Sirius had been a loud, disruptive, beautiful nuisance in your life. He was the boy who threw crushed lacewing flies at your cauldron, who wrote sarcastic commentary on the margins of your essays, and who constantly sought your attention with a relentless, annoying charm. You had always kept your walls up, playing the cold, untouchable Slytherin.
But looking at your own face right now, carrying an expression of soft, genuine vulnerability that you never let yourself show to the world, something shifted.
Sirius slowly reached up, his large, calloused fingersâwhich were currently your handsâgently brushing a stray lock of dark hair away from your forehead. His touch was incredibly tender, a stark contrast to his usual chaotic energy.
âIâm sorry,â Sirius whispered softly. His voiceâyour voiceâsounded quiet, almost reverent in the dark closet. âI didnât mean to ruin your life. Or your notes. I just⊠I wanted to do something fun. With you. Youâre always so serious, (Name). I wanted to see you laugh. Really laugh.â
Your breath hitched. Hearing your own name slip from his lips, spoken with such quiet sincerity, made your heart do a violent, erratic flutter against Siriusâs ribs.
âYouâre an idiot, Sirius Black,â you whispered back, the anger completely draining from your voice, replaced by a soft, breathless warmth.
âYeah,â Sirius murmured, a slow, gentle smile curving your lips. He didnât look away from your eyes. âBut Iâm your idiot for the next few hours. Weâre stuck like this until we can find a library book that actually has the correct counter-curse.â
You looked down at your own hands resting on his chest, then back up to his eyes. The tension between you was palpable, thick and heavy with a quiet, underlying spark that neither of you had ever dared to acknowledge during your noisy bickering in Potions class. It was a slow-burning realization, melting the cold barrier you had kept between Gryffindor and Slytherin for years.
âWe have to go to the Restricted Section tonight,â you said, your voice low and steady. âAfter hours.â
Siriusâs eyes lit up with that familiar, wicked spark of mischief, but this time, it felt deeply personal. Shared just between the two of you.
âItâs a date, (Name),â he whispered, his thumb lightly brushing against your cheekbone. âJust donât get me caught. Iâd hate to serve detention in your body.â
The heavy wooden door of the broom closet didnât just open; it flew inward with a dramatic creak, letting in a bright, unforgiving shaft of corridor light.
You and Sirius scrambled backward, knocking into a row of rusty brass cauldrons that clattered loudly against the stone floor.
Standing in the doorway, blocking the exit, was James. He had his arms crossed, his glasses pushed up his nose, and a triumphant smirk plastered across his face. Directly behind him stood Remus, leaning against the doorframe with a deeply amused, "I-told-you-so" expression, while Peter peeked over Jamesâs shoulder, eyes wide with pure curiosity.
âWell, well, well,â James drawled, looking between you (in Siriusâs body) and Sirius (in your body). âI knew you two were acting like absolute nutters, but I didn't think youâd resorted to hiding in broom closets together. Whatâs going on, Pads? Finally deciding to confess your undying love to our favorite Slytherin?â
âItâs not that, Potter,â you snapped, the habit of using his last name slipping out before you could stop it.
Jamesâs eyebrows shot up. âPotter? Again? Alright, that is officially creepier than the posture.â
âHeâs not Sirius, James,â Remus said quietly, stepping into the cramped closet and shutting the door behind them so they wouldn't be seen by passing students. His amber eyes locked onto you. âAnd she isn't (Name). Theyâve swapped. Havenât you?â
Sirius let out a massive, dramatic sigh using your voice. âBrilliant, Moony. Outstanding deduction. Yes, we swapped. The spell got stuck, our wands are confused, and now Iâm wearing a skirt and (Name) is currently occupying my incredibly handsome physique. Are you happy now?â
Peter gasped, pointing a finger at Sirius. âNo way! You actually did it?â
James stared at you, his mouth slightly open, before he slowly started to grin. It was a massive, chaotic, highly delighted smile. âOh, this is the greatest day of my life. Sirius, you look incredibly fetching in green. It really brings out your eyes.â
âShut up, Prongs,â Sirius hissed, crossing your arms defensively. âWe need help. The counter-curse we tried didn't work, probably because we used the wrong wands first and disrupted the magical feedback. We need to get into the Restricted Section tonight to find the advanced reversal texts. But if we get caught wandering the corridors after hours in each otherâs bodies, McGonagall will have us expelled before sunrise.â
Jamesâs grin turned into a conspiratorial smirk. He glanced at Remus, who gave a slow, reluctant nod of approval, and then turned his gaze back to you.
âWe have a way to get you in there,â James said, his voice dropping to a theatrical whisper. âWithout anyone seeing you. But itâs highly classified.â
âWhat is it?â you asked, your brow furrowing in Siriusâs face.
James reached into his bag and pulled out a bundle of silvery, fluid-like fabric that seemed to gleam and catch the light of the dim closet. It looked almost like water woven into thread.
Your eyes widened. As a Slytherin, you knew exactly what that was, even if you had never seen one in person. âIs that⊠an Invisibility Cloak?â
âNot just any cloak,â James whispered proudly, holding it up. âBut before we let you borrow it, we have a condition. Especially for you, Slytherin.â
You braced yourself, preparing for some ridiculous Gryffindor prank or a demand for house points. âWhat is it?â
Jamesâs face grew suddenly, hilariously serious. He pointed a finger right at yourâSiriusâsâchest.
âYou have to solemnly swear, right here and now, that you will never breathe a single word about this cloak to anyone. Not to your Slytherin mates, not to your family, not even to a portrait on the wall. If anyone finds out we have this, weâre finished. Swear it, (Name).â
You looked from the shimmering silver cloak to Jamesâs intense hazel eyes, then over to Remus, who was watching you with a quiet, trusting expression. Finally, you looked at Sirius, who was nodding encouragingly in your body.
You took a deep breath, raising your hand. âI solemnly swear. I won't tell a soul. You have my word.â
âExcellent,â James beamed, instantly dropping the intense act and tossing the heavy, silky fabric into your large hands. âNow, hereâs the plan. You two meet us in the Gryffindor common room at midnight. We'll smuggle you out from there.â
âWait,â you said, looking down at the cloak. âHow am I supposed to get into the Gryffindor common room if I donât know the password?â
Sirius let out a soft chuckle from your body, stepping closer to you in the cramped space. He reached out, his handâyour handâgently resting over yours as you held the cloak.
âDonât worry,â Sirius murmured, his voice incredibly soft as he looked up into his own grey eyes. âIâll tell you the password. Just donât get comfortable in my bed, alright?â
A slow, tingling warmth spread through your chest at his touch, the proximity making your heart do that familiar, dangerous flutter again. Under the watchful, highly amused eyes of the Marauders, the slow-burning spark between you and Hogwartsâ most notorious troublemaker was officially ignited.
The grandfather clock in the empty hallway chimed a single, deep note, marking half-past eleven. Down in the dungeons, the cold drafts seemed to whisper of secrets, but you weren't there to hear them. You were currently standing just around the corner from the Fat Ladyâs portrait on the seventh floor, sweating through a heavy Gryffindor sweater that belonged to Sirius Black.
Inhabiting his tall, athletic frame was still a bizarre exercise in physical calibration. Your strides were too long; your shoulders kept catching on the narrow stone archways; and every time you caught a glimpse of your reflection in a suit of armor, the sight of stormy grey eyes and sharp, aristocratic features staring back made your stomach do a nervous flip.
Adjusting the strap of Siriusâs leather bag over your shoulder, you approached the portrait. The Fat Lady was snozing softly, a half-empty goblet of wine painted near her elbow.
You cleared your throat, trying to pitch your voice to Siriusâs usual lazy, effortless register. "Mimbulus mimbletonia."
The Fat Lady opened one drowsy eye, let out a soft huff, and swung forward. The portrait hole gasped open, revealing the warm, roaring glow of the Gryffindor common room.
Stepping inside felt like crossing into enemy territory. Unlike the cool, subterranean elegance of the Slytherin dungeons, the Gryffindor tower was a riot of scarlet and gold. Plush, overstuffed armchairs sat clustered around a massive fireplace that crackled with dry birchwood, casting cozy, amber shadows across the tapestry-lined walls. It smelled of woodsmoke, cinnamon, and damp wool.
"Pads! Over here!"
You turned your head. Tucked into a corner table near the window, James, Remus, and Peter were waiting. But it wasn't the three boys who made your breath catch.
Sitting in the middle of them, wearing your dark green Slytherin jumper, was Sirius.
He was leaning his elbow on the table, resting his chin in your hand, looking utterly boredâyet the moment you walked in, hisâyourâeyes lit up with a brilliant, eager spark. It was incredibly disorienting to see your own face look so utterly thrilled to see you.
"You made it," Sirius said, his voiceâyour voiceâdropping to a conspiratorial whisper as you approached. He stood up, and for a brief second, you forgot the height difference. You found yourself looking down at your own face, taking in the subtle, soft curve of your own lips and the way the firelight caught the familiar details of your hair.
"Barely," you muttered, sliding into the shadow of the corner. "Your portrait hole guardian almost didn't let me in. I think my accent was too polite."
James snorted, tapping his wand against a blank piece of parchment on the table. "I told you, Padsâerr, (Name). You've got to slur the vowels a bit more. Sirius sounds like he's permanently half-asleep unless he's shouting."
"Hey! I do not," Sirius protested, crossing your arms. He looked at you, his eyes softening as he took in the sight of you wearing his oversized, comfortable Gryffindor clothes. "Though... I have to admit, you look ridiculously good in red, (Name). It almost makes up for the fact that you're currently ruining my reputation by standing up so straight."
"We don't have time for a fashion critique, Sirius," you whispered, a sudden, hot flush creeping up your neck. The casual intimacy of his gaze, even through the bizarre filter of your swapped bodies, was doing dangerous things to your heart rate. "Do you have the cloak?"
"Right here," Remus said quietly. He slid a hand into his school bag and pulled out the fluid, shimmering fabric of the Invisibility Cloak, keeping it low beneath the edge of the table. "The patrol routes tonight are heavy. Filch is down on the third floor with Mrs. Norris, and Professor McGonagall was spotted heading toward the trophy room about ten minutes ago. If you're going to the Restricted Section, you need to go now."
"Underneath the cloak, both of you," James instructed, his expression turning uncharacteristically serious as he looked at you. "Remember what you promised, (Name). Not a word to anyone."
"I haven't forgotten, Potter." you murmured.
"Good. Now get going before we get caught just standing here."
You took the silky, water-like fabric from Remus. Stepping closer to Sirius, you opened the cloak wide. Because you were currently much taller, you had to drape it over both of your shoulders, pulling him flush against your side to ensure the magical fabric covered every inch of your mismatched bodies.
The moment the cloak settled over you, the Gryffindor common room vanished from view, replaced by the shimmering, semi-transparent veil of the cloak's interior.
But the sudden closeness was overwhelming.
With the cloak draped tightly over the two of you, Sirius was pressed firmly against your side. You could feel the soft, steady rise and fall of his chestâwell, your chestâagainst your ribs. Your arm was wrapped around his shoulder to keep the fabric from slipping, and his hand had instinctively found a grip on the fabric of your Gryffindor sweater, holding onto you for balance in the dim space.
"Comfortable?" you whispered, your deep, rumbling voice sounding incredibly close to his ear.
Sirius looked up at you. In the cramped, private darkness beneath the cloak, his eyesâyour eyesâshone with a mixture of mischief and something much softer, much more intense.
"Incredibly." Sirius murmured, a slow, breathtaking smile spreading across your face. "Though I have to say, (Name)... holding onto myself is a very weird experience. But I think I like holding onto you much better."
Your heart did a violent, erratic leap against Siriusâs ribs. Before you could lose your nerve, you tightened your grip on his shoulder, guiding him toward the portrait hole.
"Come on, Black." you whispered, trying to ignore the sudden warmth blooming in your chest. "Let's go find that book."
The quiet of the library at midnight was absolute, save for the occasional, eerie creak of the old wooden floorboards and the distant, rhythmic ticking of a grandfather clock.
Underneath the silky, weightless cover of the Invisibility Cloak, you and Sirius moved as one. It required a delicate, synchronized dance. Because you were currently taller, your arm stayed securely draped around his shoulders, holding the shimmering fabric down over your ankles. Siriusâs hand remained anchored to the hem of your Gryffindor sweater, his fingers occasionally brushing against your side with a warmth that made it incredibly hard to focus on the dark corridors.
You slipped past the towering, shadow-drenched bookcases of the main library, navigating by the faint, silvery moonlight filtering through the high arched windows.
When you reached the heavy iron gate of the Restricted Section, you paused.
âItâs locked.â you whispered, your deep baritone voice barely a breath against the crown of hisâyourâhead.
âPlease,â Sirius whispered back, a smug, quiet chuckle vibrating in your chest. âWho do you think youâre locked in here with? Hand me my wand.â
You reached into your pocket, withdrew his wand, and slid it into his hand beneath the cloak. With a practiced, silent flick of your wrist, Sirius tapped the iron lock.
âAlohomora.â he murmured.
The lock clicked open with a soft, metallic scrape that sounded like a gunshot in the dead silence. You both froze, waiting. When no footsteps echoed, you pushed the gate open just enough to slip through, pulling the cloak tight behind you.
The Restricted Section felt entirely different from the rest of the library. The air was heavier, thick with the scent of ancient leather, dust, and a faint, electric hum of dark magic. Many of the books here were chained to the shelves; some whispered softly as you passed, while others had faces bound in leather that seemed to track your movements.
âLook for The Multi-Faceted Soul or Multiversal Alignments,â you whispered, scanning the dark spines. âTheyâll be on the upper shelves.â
âOn it.â Sirius murmured.
Because you were currently in his taller body, you had to act as the reacher. You guided him down a narrow aisle, your chest pressed lightly against his back as you scanned the top shelves. The proximity was dizzying; every breath you took in was filled with the scent of the library, but also the distinct, clean scent of Siriusâs leather jacket and cedarwood.
âThere,â Sirius whispered, pointing your hand toward a thick, midnight-blue tome bound in silver thread. âThe Art of Metamorphic Bindings. That has to be it.â
You stretched your arm up, carefully sliding the heavy book off the shelf.
âGot it.â you breathed, stepping back into the shadows of a deep alcove.
You sank down onto a dusty velvet window seat tucked between two towering bookcases. Sirius sat right beside you, pulling the cloak down so it hung loosely over your shoulders, freeing your hands. You placed the heavy book on your lap, and Sirius immediately leaned in close, his shoulder pressing firmly against yours as you cracked the cover open.
The pages glowed with a faint, magical luminescence, casting a soft, blue light over your faces.
âLetâs see.â you muttered, flipping through the delicate parchment. âAmalgamation⊠Animagus transfiguration⊠Ah. Here. Corporate Transference.â
Sirius leaned closer, his eyesâyour eyesâscanning the elegant runes. âLook at the counter-spell. âAnimus Reverti.â But look at the footnote, (Name).â
Your eyes dropped to the bottom of the page.
FOOTNOTE: Should the initial reversal fail due to mismatched magical conduits (using the wrong wands), the souls will reject a secondary attempt until the celestial cycle aligns at dawn. A premature attempt may result in permanent fusion.
âDawn,â you whispered, the word sinking in. âWe have to wait until dawn.â
âWell,â Sirius said softly. âAt least we donât have to worry about permanent fusion. I love you, (Name), but I donât think I want to share a stomach with you.â
You let out a soft, genuine laughâwhich, coming from Siriusâs chest, sounded deep and incredibly rich. âYouâre ridiculous, Black.â
âIâm serious,â he teased, then caught himself. âWell, technically, you are currently Serious. Iâm just⊠me. In a very pretty package.â
You looked over at him.
The soft, blue light of the book illuminated your own face, but the expression on it was entirely Sirius. His eyes were incredibly bright, fixed on you with an intensity that made the dusty alcove feel miles away from the rest of Hogwarts. The playful, arrogant boy who had spent three years throwing potion ingredients at your head was gone, replaced by someone quiet, attentive, and incredibly close.
âYou think Iâm pretty?â you asked softly, the words slipping out before your Slytherin filters could stop them.
Sirius didn't blink. A slow, genuinely tender smile touched your lips. He reached out, his large, ring-adorned handâwhich was actually your handâgently cupping your jaw. His thumb brushed over your cheekbone, the touch sending a sharp, electric shiver straight down your spine.
âIâve always thought you were beautiful, (Name),â Sirius murmured, his voice dropping to a low, breathless register. âEven when you were glaring at me from across the dungeon. Especially when you were glaring at me, actually.â
Your breath hitched. You looked down at his mouth, then back up to his eyes. The space between you seemed to vanish entirely. Sitting in the Restricted Section, wrapped in a stolen invisibility cloak, the boundaries of Slytherin and Gryffindor completely dissolved.
âSiriusâŠâ you whispered, your heart hammering so loudly against his ribs you were sure he could hear it.
âWe have a few hours until dawn,â Sirius whispered, his face moving just a fraction of an inch closer, his thumb resting right at the corner of your lip. âI think we can find a way to pass the time.â
As the space between you collapsed and the air in the narrow alcove grew impossibly warm, the sheer absurdity of the situation caught up to you. You stared at your own face, merely inches away, with Siriusâs soul looking out of your eyes.
Gently but firmly, you reached up with Siriusâs large, calloused hand and caught hisâor rather, yourâwrist. The contrast was striking; your hand, currently so much larger, easily wrapped around your own delicate wrist.
You pushed him back just an inch, a slow, grounded smile tugging at the corners of Siriusâs lips on your face.
âSirius,â you whispered, your deep, borrowed voice holding a thread of quiet amusement. âStop.â
Sirius blinked, hisâyourâhead tilting slightly in confusion, though he didnât pull his hand away from your jaw entirely. âStop? But the atmosphere is perfect. The lighting is dramatic, the cloak is cozy, and Iâm being incredibly charming.â
âYou are being highly chaotic, as usual,â you corrected softly, your grip on his wrist relaxing into a gentle, lingering hold. âAnd as flattering as it is to hear you say all of those things⊠I am not having our first kiss while we are wearing each otherâs faces. I am absolutely not kissing myself, and I am not letting you kiss yourself either.â
Sirius froze, the realization sinking in. He looked at his hand cupping your cheek, then down at his own body, and finally back up to your stormy grey eyes. A sudden, quiet laugh escaped your throat, the sound light and musical.
âMerlin,â Sirius muttered, shaking his head as a faint blush crept across your cheeks. âYouâre right. That would be incredibly trippy. Brilliant, but highly disturbing.â
âBe patient, Black,â you murmured, your thumb gently brushing against the inside of his wrist, right over his racing pulse. âOnce we are back in our own bodies⊠then we can have our moment. Not a second before.â
The promise in your words hung in the quiet space between you, heavy and thick with an anticipation that made the wait feel entirely worth it. It wasn't a rejection; it was a raincheck, one that made the slow-burning tension between you simmer even hotter.
Siriusâs eyes softened, a look of genuine, yielding warmth settling over your features. He slowly let his hand drop from your face, though his fingers lingered against your collarbone for a fraction of a second before he pulled back.
âA deal, then,â Sirius agreed softly, leaning his head back against the stone wall of the alcove, though he didnât move away from your side. âBut youâre going to have to keep me entertained until dawn. Itâs at least four hours away, and I am notoriously bad at sitting still.â
âIâm sure we can manage,â you said, adjusting the silver weight of the Invisibility Cloak over your shoulders, pulling him back into the warm, protective shadow of the magical fabric.
[ đŁČâ]
With the ancient book resting open on your knees, its faint blue light casting long shadows across the dusty floorboards, the two of you settled in to wait. Sirius leaned his shoulder heavily against yours, his hand sliding down to find yours under the cover of the cloak, his fingers tracing the foreign lines of his own palm in your grip.
And there, hidden away from the rest of Hogwarts in the quietest corner of the castle, the countdown to dawn began.
The first pale, golden rays of dawn finally pierced through the high arched windows of the library, cutting through the dusty gloom of the Restricted Section and painting the stone floor in warm light.
The book on your lap seemed to lose its faint, magical hum as the sun rose, the ink on the pages turning back into ordinary black script.
You looked over at Siriusâwho was still wearing your faceâand let out a quiet sigh of relief. The wait was finally over.
"Itâs time," you said, your deep, borrowed baritone voice cracking slightly with anticipation.
Sirius stood up, stretching your limbs with a dramatic yawn. "Thank Merlin. I love you, (Name), but your posture is exhausting. My back feels like a wooden board."
"Thatâs called having a spine, Black," you countered dryly, standing up to face him.
You both drew your wandsâyour correct wands this time. You pointed yours at his chest, and he pointed his at yours. The air between you grew charged, the residual magic of the swap prickling against your skin like static.
"On three," you murmured. "One... two... three."
"Animus Reverti."
The incantation left your lips in perfect unison.
For a terrifying second, the world spun violently. A rush of silver, liquid light erupted from the wands, wrapping around the two of you like a whirlpool. Your vision blurred, your head throbbed, and you felt a strange, gravity-defying pull in the center of your chestâas if you were being dragged through a keyhole.
And then, with a sharp, breathless gasp, your feet slammed back down onto the cold stone floor.
You stumbled, blinking rapidly as the room stopped spinning.
You looked down. The oversized Gryffindor sweater was gone, replaced by your fitted, green-trimmed Slytherin robes. Your hands were smaller, your fingers delicate and unadorned by silver rings. You reached up, touching your face. Your nose. Your cheeks.
You looked up.
Standing a few feet away, towering over you once again, was Sirius Black. He was running a large, ring-clad hand through his messy, dark curls, a breathless, utterly genuine laugh escaping his chest. His actual voiceâdeep, slightly husky, and full of lifeâechoed softly in the quiet alcove.
"Oh, sweet Salazar," Sirius breathed, looking down at his leather jacket and his own boots. "I'm back. I have my shoulders. I have my voice. I can finally slouch again!"
To prove his point, he immediately slumped into a lazy, effortless lean against the nearby bookcase, looking at you with those striking, stormy grey eyes.
"See?" you smiled, your own quiet, reserved voice returning to you. "I told you to be patient."
"Yeah, well," Sirius murmured, his lazy demeanor shifting in an instant. The playful arrogance in his eyes softened into something intensely focused, locking onto you. "I've been patient for six hours, (Name). I think my quota for the year is entirely used up."
Before you could offer a witty retort, Sirius took two long strides, closing the distance between you. He didn't hesitate this time.
His hand slid gently around the side of your neck, his thumb resting against your jawline, tilting your head up. His touch was warm, sending a familiar, electric shiver straight down your spineâbut this time, it was your skin against his hand. There was no magic filter, no trippy reflection. It was just him. And it was just you.
"Now," Sirius whispered, his breath warm against your lips, his eyes dropping to your mouth before rising back to meet yours. "Where were we?"
"You were about to kiss me," you murmured softly, your hands instinctively reaching up to grip the lapels of his leather jacket. "Without making it weird."
"Right. Letâs do that."
Sirius leaned down and closed the remaining distance, his lips meeting yours in a soft, lingering kiss.
It was everything you had spent three years pretending you didn't want. The kiss started slow, sweet, and incredibly tender, but as your fingers tangled into the soft hair at the nape of his neck, the slow-burning tension of the entire nightâand the last three years of bickering in Potionsâfinally erupted. Sirius pulled you flush against his chest, his other hand finding your waist, deepening the kiss with a fierce, possessive warmth that made your knees go entirely weak.
When he finally pulled back, just an inch, he kept his forehead rested against yours. Both of you were breathing softly, the golden morning light bathing the dusty Restricted Section in a warm, quiet glow.
Sirius let out a quiet, breathless chuckle, a brilliant, brilliant grin spreading across his face.
"Definitely worth the wait," he whispered, his thumb wiping a trace of your shared breath from your lower lip. "Though, if you ever want to swap bodies again... I still want to know how you girls manage theâ"
You cut him off by pulling him down by his collar for another kiss, effectively silencing him, and decided that surviving the rest of the term with Sirius Black might not be so bad after all.
The portrait of the Fat Lady swung shut with a soft, heavy thud, sealing the quiet warmth of the Gryffindor common room behind Sirius. The embers in the fireplace had decayed into a low, pulsing orange glow, casting long, skeletal shadows across the empty armchairs.
Sirius stood in the center of the room for a moment, the weight of the silver Invisibility Cloak draped over his arm like water. His chest felt unusually light, his mind still spinning with the memory of the dusty library alcove, the smell of old parchment, and the lingering, electric taste of your lips. He let out a breath he didn't realize heâd been holding, a slow, ridiculously dazed smile spreading across his face as he ran a hand through his own dark, unruly curls. It was his hand. Those were his curls.
With a quiet snort at his own sentimentality, he turned and bounded up the spiral stone stairs to the boys' dormitory, taking them two at a timeârelishing the familiar, long-legged stride that was finally his again.
He pushed the dormitory door open as quietly as possible, but the old iron hinges gave a faint, traitorous creak.
Instantly, a figure sat bolt upright in the four-poster bed nearest the window.
James didnât have his glasses on; his hair was a wild, bird-nest disaster, and he was squinting aggressively into the darkness. He fumbled blindly at his nightstand, knocking over an empty goblet before finding his spectacles and shoving them onto his face.
"Pads?" James whispered, his voice thick with sleep but laced with immediate, sharp alertness.
"Yeah, mate. It's me," Sirius quieted, tossing the folded Invisibility Cloak onto the foot of Jamesâs bed. He began unbuckling his leather jacket, letting out a satisfied grunt as he threw it over his trunk.
James didn't move. He slid his legs over the edge of his mattress, leaning forward with his elbows on his knees, staring at Sirius with a deep, unwavering intensity. He squinted through his round lenses, analyzing the way Sirius moved, the way he shook his hair out, the way he slouched.
From the bed adjacent to James, a soft rustle of sheets signaled that Remus was awake too. Remus didnât sit up, but his amber eyes gleamed in the darkness, watching the interaction with quiet, highly amused interest.
"Alright, hold on," James said, pointing a finger at Siriusâs chest. "Don't move."
Sirius paused, one boot half-off, raising an eyebrow. "What?"
"I need proof," James demanded, his voice dropping to a serious, conspiratorial whisper. "We got burned in Transfiguration today. Iâm not letting a Slytherin sleep in our dorm. Are you the actual, genuine, certified Sirius Black?"
Sirius let out a loud, dramatic groan, tossing his boot to the floor with a loud clack. "Oh, come off it, Prongs. Yes, itâs me."
"That is exactly what a cunning, body-swapping Slytherin pretending to be Sirius Black would say," James countered, crossing his arms and tilting his head. "Remus, back me up here. Ask him something."
Remus let out a low, tired chuckle from beneath his blankets, his voice raspy. "Sirius. What did you do with the copy of Advanced Potion-Making we stole from the library last term?"
Sirius rolled his eyes, shoving his other boot off. "I used the blank pages in the back to draft a letter to a random dude, and then I accidentally dropped the rest of it into the Black Lake while trying to see if the giant squid would eat it. It didn't. It spat it back out."
Remus smiled, settling deeper into his pillows. "It's him, James."
"Not good enough," James declared, though the corner of his mouth was twitching. He stood up, marching over to Sirius and grabbing him by the shoulders, shaking him slightly. "Look me in the eye, Pads. If you're really you... what is the password to the secret map?"
"I solemnly swear that I am up to no good." Sirius drawled, swatting Jamesâs hands off his shoulders with a lazy, familiar grin. "And if I were still (Name), Iâd have probably cursed you into next week for touching me. Now let me sleep. My body is exhausted, and apparently, your bed is much less comfortable than the ones in the dungeons."
James stared at him for one more second before a massive, relieved grin broke across his face. He let out a quiet laugh, shoving Siriusâs shoulder playfully. "Merlin, you're back. Thank god. Your posture today was giving me a mid-life crisis. I felt like I was sharing a desk with a prefect."
"Shut up," Sirius muttered, though there was no real heat in it. He walked over to his own bed, collapsing face-first onto the red-and-gold duvet, letting out a long, contented sigh as his face sank into the pillow.
"So..." James lingered by the edge of Siriusâs bed, his voice instantly turning into a teasing, sing-song whisper. "Did you find the book? Did you swap back in the library?"
"Obviously," Sirius murmured into his pillow, his voice muffled. "Hence the lack of green robes."
"And?" James nudged Siriusâs leg through the duvet. "Did you get your moment? Or did you chicken out because you were too busy admiring your own face in her body?"
Sirius rolled over onto his back, his arm draping over his eyes to block out the faint light. He didn't answer right away, but the slow, private smile that curved his lips spoke volumes. The memory of youâback in your own skin, looking up at him with those beautiful, stubborn eyes right before he kissed youâflashed behind his eyelids.
"I didn't chicken out, Prongs," Sirius said softly, his voice carrying a rare, quiet warmth that made Jamesâs teasing grin soften into something genuinely happy for his friend.
"Good," James smiled, turning back toward his own bed. "Because if I had to listen to you pine over a Slytherin for a fourth year in a row, I was going to throw myself off the Astronomy Tower."
"I do not pine," Sirius protested weakly, though he didn't put up much of a fight. He pulled his blankets up to his chin, his chest warm, his mind already drifting to tomorrow morning's breakfastâand the look heâd get to share with you across the Great Hall, completely in your own bodies, with a secret that belonged entirely to the two of you. ïżŒ
[ đŁČâ]
The Great Hall at breakfast was always a sensory assault of clattering silver, floating candles flickering low in the morning light, and the deafening roar of hundreds of students swapping gossip. But for you, sitting at the Slytherin table, the atmosphere felt exceptionally tense.
You had barely managed to butter your toast before you felt the collective, heavy weight of three distinct stares drilling into the side of your face.
To your left, Barty Crouch Jr. was lazily spinning his wand between his fingers, his dark eyes glittering with a chaotic, sharp curiosity. Across from you, Evan Rosier sat with his chin propped in his hand, systematically tearing a piece of soda bread to shreds while keeping his gaze locked entirely on you. Beside him, Regulus Black sat with perfect, quiet posture, sipping his black tea with a chillingly neutral expression that you knew was far more dangerous than Bartyâs overt smirks.
"So," Barty began, his voice dropping to a low, dramatic drawl that barely carried over the noise of the hall. "Are we going to talk about yesterday, or are we going to pretend you didnât have a sudden, miraculous recovery from whatever brain-rot possessed you during Potions?"
You kept your expression entirely cool, taking a calm sip of your pumpkin juice. "I don't know what you're talking about, Barty."
"Oh, please," Evan scoffed, leaning forward over the table. "You forgot the password to the common room. You sat like a Gryffindor who had never seen a chair before. And then thereâs the matter of your notes." He reached into his robes, pulled out a folded piece of parchment, and tossed it onto the table between you. "Explain this."
You unfolded the parchment. Written in giant, chaotic, looping scrawl that looked like it had been penned by a blind troll during an earthquake was a single paragraph about the Draught of Living Death. It was undeniably Siriusâs handwriting.
"I had a hand cramp," you said smoothly, sliding the parchment back to Evan without blinking. "And Slughorn was speaking quickly."
"Slughorn speaks at the pace of a weeping willow," Regulus noted quietly, setting his teacup down with a soft clink. He leaned in, his silver eyesâso hauntingly similar to the ones you had inhabited just hours priorânarrowing as they searched your face. "And you bolted out of the dungeons as if the castle were collapsing. My brother was acting equally bizarre. He was standing like a statue, speaking with actual vocabulary, and then you dragged him out of McGonagallâs class in front of everyone."
"Black was being his usual obnoxious self," you replied, keeping your voice even, channeling every ounce of your pureblood training to keep your heart from hammering against your ribs. "He made a ridiculous wager in Potions, it went too far, and I had to correct him. Privately."
Barty leaned in, a wicked, knowing grin spreading across his face. "Are you sure you two didn't actually pull off that little stunt he was whispering about? The body-swap? Because if you let Sirius Black run around in your body for a single afternoon, (Name), I am going to have to inspect our common room for hidden dungbombs."
"Do not be ridiculous," you hissed, fixing Barty with a glare cold enough to freeze water. "I would never allow Black anywhere near my magic, let alone my body. It was a stupid joke. Nothing more."
Regulus studied you for a fraction of a second longer before letting out a soft, dismissive sigh. "Just make sure his nonsense doesn't bring unwanted attention to our house, (Name). We have enough to deal with without my brother's circus acts."
With the interrogation temporarily deflected, you finally let your shoulders drop a fraction of an inch. You picked up your goblet of pumpkin juice, took another sip, and allowed your gaze to drift across the vast, bustling space of the Great Hall.
Your eyes traveled past the Ravenclaw table, straight to the sea of scarlet and gold.
And there, sitting at the center of the Gryffindor table, was Sirius.
The moment your eyes found him, you realized he was already looking at you. He was slouched in his seat, his leather jacket draped haphazardly over his shoulders, looking effortlessly, irritatingly handsome. Next to him, James, Remus, and Peter were all staring at you too, their breakfast entirely forgotten.
When Sirius caught your eye, a slow, incredibly soft smile touched his lipsâa stark contrast to the loud, boisterous grins he usually threw around the hall. It was a private, shared look, carrying the heavy, sweet memory of the dusty library alcove and the quiet promise of dawn.
Suddenly, James leaned over, nudging Sirius hard in the ribs with his elbow. James whispered something rapidly into Siriusâs ear, his hazel eyes darting toward you with a massive, teasing grin. Remus let out a quiet, suffering chuckle, shook his head, and hid his face behind his copy of the Daily Prophet, while Peter snickered into his goblet.
Whatever James said made Sirius burst into a sudden, breathless laugh.
But as he laughed, a faint, unmistakable pink flush crept up his neck, dusting his high cheekbones. He threw a half-hearted, embarrassed shove at Jamesâs shoulder, trying to look annoyed, but his eyes immediately darted back across the hall to lock onto yours. He gave you a helpless, slightly sheepish shrug, his grey eyes shining with an unmistakable, slow-burning affection that made your own stomach do a violent, delicious flip.
Across the table, Barty cleared his throat loudly, snapping you out of your trance.
"If you stare at the Gryffindor table any harder, (Name)," Barty muttered, a highly suspicious smirk playing on his lips, "people are going to start thinking you actually like him."
You quickly tore your eyes away, smoothing down your green-and-silver tie as a quiet warmth bloomed in your chest. "Don't be absurd, Barty. Eat your toast."
















