Chapter Text
Remus Lupin didn’t speak much. Not because he didn’t want to, but because he’d long since learned that speaking too much led to attention, and attention led to questions, and questions led to truths that made people flinch.
And Remus was tired of making people flinch.
He sat near the window on the Hogwarts Express with a book open on his lap and one finger tracing absent circles against the soft wool of his jumper. The seat beneath him buzzed faintly with the movement of the train — a strange sort of lullaby, one he didn’t yet trust enough to relax to. His legs were pressed together neatly, and his school shoes were already scuffed at the toe. There was a honey-coloured smudge on his wrist where his mum had kissed him goodbye too hard.
He could still feel it.
The door to the compartment slammed open and jolted him from his thoughts.
“Oi! This one’s got space!”
Remus looked up, startled, as a mop of unruly black hair and glasses bounded in like a small, friendly hurricane. The boy’s grin was wide and unrepentant, with a little gap between his front teeth. Behind him came two others — one with a slightly rat-like face and watery eyes, and another who walked like he’d been born to own every room he entered.
Remus blinked.
The black-haired one flopped onto the seat opposite him without asking. “You don’t mind, do you?” he asked brightly. “Everywhere else is packed. Or full of girls. Or full of girls pretending not to be watching the prefects.”
Remus shook his head mutely.
“Brilliant. I’m James. James Potter.” He stuck out a hand across the compartment. Remus reached forward and shook it, uncertain. His palms were dry — he was proud of that.
“Remus,” he said.
James grinned. “Remus! Like the wolf kid from that myth!”
Remus went still.
The boy with the ratty face laughed like James had made a joke. The third boy — the one who hadn’t sat down yet — quirked an eyebrow.
“Real subtle, Potter,” he drawled. His voice was sharp and soft at the same time, like something expensive wrapped in barbed wire. “What if he doesn’t want to be named after some half-feral Roman legend?”
James looked baffled. “Well, I didn’t mean anything—”
“I know,” Remus said quietly. “It’s alright.”
The third boy finally dropped into the seat next to James, sprawled like a cat in a sunbeam. He had high cheekbones and shadows under his eyes, and his hair looked like it had never known peace.
Remus didn’t know how a person could look both impossibly tired and vividly alive at the same time.
“Sirius Black,” the boy said, turning his gaze on Remus. “In case you’re wondering. No, I don’t bite.”
Remus offered him a shy smile. “Remus Lupin,” he said again.
“Lupin?” Sirius repeated, smirking. “So we’re both canine-coded.”
Remus froze.
James groaned. “Don’t start, mate.”
Peter — because the ratty boy was Peter, as James had introduced before Sirius steamrolled him — let out a wheezing giggle. “What does that even mean?”
“It means,” Sirius said airily, “that the universe has a sense of humour.” He glanced back at Remus. “Nice to meet you, Lupin.”
Remus didn’t answer, but for the first time in a long time, he didn’t feel the usual rush of panic when someone looked too closely. Just…curiosity. And warmth.
The train ride unfolded in bursts of chaotic energy and far too much sugar.
James practically assaulted the trolley lady with Galleons, buying a ridiculous amount of sweets — Pumpkin Pasties, Cauldron Cakes, Liquorice Wands, and enough Chocolate Frogs to summon an army. He dumped the loot across the seat like a dragon showing off his hoard and immediately began passing things out with reckless generosity.
“Here, Lupin,” he said every ten minutes like it was a mission, holding out another frog with a grin that made Remus feel like saying no would be a personal offence. “You haven’t lived until you’ve had twelve of these in one sitting.”
Peter yelped when his frog sprang from the box and smacked him in the chest, legs flailing as it tried to make a break for the window. He clutched at it like it was about to explode, eyes wide, and Sirius nearly fell off his seat laughing.
Sirius, who had somehow managed to sneak a handful of Remus’ Bertie Bott’s Every Flavour Beans while everyone was distracted, popped a pale blue one in his mouth with a dramatic flourish—and immediately froze.
“Oh—oh bloody hell,” he choked, grabbing James’ abandoned pumpkin juice and downing it like his life depended on it. His eyes were watering, face twisted in pure betrayal. “Soap! It tastes like I just licked my gran’s bathroom!”
James howled. Peter giggled so hard he snorted.
And Remus… laughed.
It slipped out before he could catch it — a sharp, startled little sound that cracked the air like lightning through still skies. Not polite. Not practised. Just real.
Three heads turned towards him, almost in sync.
Remus blinked, caught mid-laugh, suddenly conscious of how loud it had sounded. His smile dropped into something sheepish as heat crawled up his neck.
“What?” he asked, defensive in the way kids are when they expect teasing.
James shook his head, still grinning. “Nothing. Just… hadn’t heard you laugh yet.”
“It’s a good one,” Sirius added, sounding oddly sincere for someone who had just compared his taste buds to a cleaning product.
Peter nodded in agreement, mouth full of toffee.
Remus ducked his head, fingers curling around a Chocolate Frog card he hadn’t even looked at yet. His chest felt warm — full, even. Like someone had struck a match in his ribs and it hadn’t stopped burning.
He kept that laugh tucked away like a secret.
Later, as the sky outside the window turned deep lavender and shadows stretched long over the fields, the boys clumsily changed into their school uniforms. Limbs bumped, elbows jabbed, and curses were muttered. Peter’s tie was backwards. James’ robe got caught on the door handle. Sirius had clearly been born knowing how to wear a tie with swagger and was already inspecting himself in the reflection of the window like it owed him compliments.
Remus, slower, quieter, turned away from them as he buttoned up his shirt. The fabric brushed over the familiar mark on his chest — a single freckle, small and dark, just under his left collarbone.
It was shaped like a star. Five sharp little points. Perfect. Like it had been drawn there by someone careful.
He tugged his jumper higher, out of habit.
Everyone had freckles. Probably.
Right?
They all ended up in the same house — Gryffindor. Somehow.
Remus hadn’t expected that.
He watched from the back of the line, heart in his throat, as Sirius Orion Black strode up to the stool like it had personally challenged him. His name had barely been called — “Black, Sirius” — when the whispers began, the ones with that tinge of both awe and suspicion. A Black. At Hogwarts. Everyone knew where he was supposed to go.
Sirius glared at the Sorting Hat the moment it touched his head, jaw set, body stiff like he was bracing for a punch.
It took longer than expected. A full minute. Remus could see Sirius’ fingers digging into the wooden edge of the stool, white-knuckled. The Hat seemed to be arguing with him — even if no one could hear it. And then, abruptly, it shouted:
“GRYFFINDOR!”
There was a beat of silence before the cheers erupted. Some of them sounded surprised.
Sirius practically ripped the hat off his head, jumped down, and marched towards the Gryffindor table without looking back. He didn’t smile. He didn’t sit like he was proud of it. He slumped into the seat like he’d just lost a war.
Then it was Remus’ turn.
“Lupin, Remus.”
His legs carried him forward even though he barely remembered telling them to move. The stool was still warm from Sirius.
The Sorting Hat barely brushed the curls above his ears when it yelled “GRYFFINDOR!” like it had been waiting.
There was a flurry of clapping. Remus didn’t hear it. His ears were ringing too loudly.
He didn’t look for Sirius when he sat down. He kept his eyes on his plate.
Then came Peter — twitchy, flushed, eyes darting everywhere like a rabbit in a den of wolves. “Pettigrew, Peter.” He tripped over his own foot getting to the front.
“GRYFFINDOR!”
And last: “Potter, James.”
The boy who swaggered up to the stool with all the confidence in the world. He winked at someone in the crowd — Remus didn’t see who. The Hat was on his head barely long enough to blink before it shouted the same as before.
“GRYFFINDOR!”
By the time the feast ended, the castle felt like something between a dream and a maze. They followed the prefects — or, rather, were dragged along by the wave of first-years — up endless staircases, past paintings that moved and whispered.
The Gryffindor common room was warm and gold-lit, like stepping into a hearth. It smelled like old wood, soap, and maybe cinnamon. The dormitory at the top of the boys’ tower was circular and cosy, with five beds spaced evenly around the curve of the room. Thick red curtains. Soft quilts. A wide window facing the night.
Remus sat on his bed, a book in his lap. He wasn’t reading. Just… listening.
James talked the most — all flailing hands and cocky smiles. Peter nodded along like a loyal pet, asking way too many questions. Sirius had taken over the bed beside the window, lying back like he owned the place, arms folded behind his head, boots still on.
At some point, Sirius turned his head towards Remus. “You always that quiet, Lupin?”
Remus shrugged.
Sirius raised an eyebrow. “Cool. We talk enough for six people anyway.”
James laughed at that — one of those unbothered, belly-deep laughs that sounded like it didn’t know what shame was.
Eventually, they changed into pyjamas. Sirius’ were black, obviously. James’ had golden snitches all over them and looked like they cost more than Remus’ entire wardrobe. Peter’s were mint green and had animated frogs doing somersaults. Remus’ were just gray and old — not shabby, but nothing worth noticing.
Sirius climbed into bed last.
He passed by Remus’ bed to get to his own, leaned in to blow out the candle — and paused.
The flame flickered, catching on his sharp cheekbones and dark lashes. Shadows danced on his face like smoke.
Then he noticed it.
“That,” Sirius said softly, pointing to the skin just beneath the collar of Remus’ shirt, “looks like a star.”
Remus went rigid. His hand twitched, like he wanted to cover it. “It’s just a freckle.”
Sirius squinted at it. “No. It’s a perfect five-point star.” His voice had gone weirdly quiet. Curious, almost… reverent. “Looks like the start of a constellation.”
Remus didn’t respond. The silence suddenly felt tight, like too-small shoes.
Sirius didn’t press. He just smiled — that lopsided, lazy sort of smile that made it seem like he knew something you didn’t.
“Goodnight, Moonskin.”
Remus blinked. “What?”
Sirius was already turning away. “Your skin. Looks like it’s seen moonlight,” he muttered, voice fading with a yawn. “That’s all.”
And just like that, he was under the covers and asleep, snoring lightly.
Remus stayed sitting for a long time, staring at the place where Sirius’ face had been.
He turned towards the window.
The stars outside flickered in the darkness — steady and familiar. Like they were waiting for him.
He pressed his palm against his chest, right over the freckle.
It was warm. Just for a moment.
Like something had noticed.
And for the first time in years, Remus Lupin fell asleep without a fight.
It turned out that Hogwarts was both louder and quieter than Remus expected.
Louder, because eleven-year-old boys didn’t shut up. Especially not the ones he’d been lumped with in the Gryffindor dormitory. James Potter had a laugh like a trumpet. Sirius Black refused to walk anywhere without making commentary about literally everything — the castle’s moving staircases, the strange portraits (he’d yelled at one for insulting his hair), the ghosts (“Did anyone else see the one in a nightgown?”). And Peter, small and round-faced, always trying to keep up, chiming in with a breathless sort of excitement.
But Hogwarts was also quieter than he expected.
At night, when the castle sighed into stillness, Remus would lie awake in bed and listen to the wind brushing against the high windows. The moon’s pull was distant, a thin whisper in his chest, but it was always there. Sometimes he felt like the wolf could sense Hogwarts, like it was old magic pressing into old bones. And beneath his collarbone, that strange freckle glowed just faintly some nights, a soft shimmer like moonlight against skin.
He didn’t know why it pulsed when Sirius was nearby.
Remus didn’t mean to make friends.
It wasn’t like he had a choice, anyway. They were there — in the dorm, in the common room, at the breakfast table. James and Sirius had a gravitational pull, and Peter was just grateful not to be drifting alone. Somehow, Remus had ended up caught in their orbit.
They all had very different kinds of homes. James had parents who sent him care packages with jam and hand-knitted scarves. Peter had a mum who worried too much and spelled little charms into his jumper to keep him warm. Sirius — Sirius didn’t talk much about home. But he flinched every time a Howler arrived in the Great Hall.
Remus knew the feeling.
So he didn’t ask, and Sirius didn’t offer. But one night in October, after they’d all stayed up whispering about the prank they’d pulled on a Slytherin prefect (it involved Dungbombs, enchanted quills, and an accidental tarantula), Remus caught Sirius staring at the fire.
His face looked older in the flickering light. Quiet. Almost fragile.
“Y’really good at Transfiguration,” Remus offered, gently. “The best in class.”
Sirius looked over, blinked, then smiled like he hadn’t expected someone to say something kind.
“Thanks, Moony.”
“Moony?”
Sirius shrugged, leaning back on his hands. “You’ve got this kind of… moonlight thing going on. Y’know? All pale and glowy and quiet. It fits.”
Remus opened his mouth to argue — then closed it. He didn’t hate it.
It stuck.
By winter, they were something like a family. A very loud, slightly dangerous family.
James was the leader — unspoken, but obvious. Not because he wanted to be, but because he burned so brightly, you wanted to follow him into the sun.
Sirius was the spark. He was always the first to leap into trouble, to dare someone to do something stupid, to scale the roof of the Astronomy Tower just to “see if the view was worth detention.”
Peter was the echo. Nervous but loyal. Always behind them, always watching, always trying to keep up.
And Remus — Remus wasn’t sure what he was. The tether, maybe. The one who made sure they didn’t burn out too fast or fly too far.
He still kept his secrets. Still didn’t tell them about the times he disappeared for three days each month, when Madam Pomfrey walked him across the grounds to the Shrieking Shack under the light of the waxing moon.
But they were starting to notice.
“Where’d you go last week?” Sirius asked one day after Herbology, boots caked in soil, hair full of leaves.
“Got sick,” Remus muttered.
“You always get sick at the end of the month.”
Remus froze.
James smacked Sirius with a rolled-up textbook. “Oi. Don’t be a prat.”
“I’m not. I’m just saying.” Sirius tilted his head, thoughtful. He had that look again — the one where he was watching Remus a bit too closely. Like the stars on his skin could be read like runes.
Remus hunched his shoulders, let his hair fall in front of his eyes. “Just drop it, alright?”
And they did.
But not for long.
The freckles were spreading.
At first, it was only that one — a tiny mark like a five-pointed star under his collarbone. Now there were others. Smaller ones dusting over his ribs. A pattern forming. He didn’t dare ask anyone about them.
In February, he caught Sirius watching him in the mirror room, where they’d ducked into to avoid Filch. The air was cold, their breaths visible. Sirius had his hair pulled into a messy bun, wand tucked behind one ear, grinning like a demon.
Remus pulled his robes tighter. “What?”
“You’ve got a constellation growing on your ribs,” Sirius said, voice almost casual.
Remus stiffened, glancing down, the pattern was glowing under his shirt.
Sirius just leaned in. He reached out like he might trace it — didn’t. Just stared.
“Looks like… Canis Major.”
Remus blinked at him. “Isn’t that the Dog Star one?”
Sirius grinned. “Yeah. Brightest star in the sky. Named after the big dog that followed Orion around.”
Remus turned away. “Fitting. Since you never shut up about dogs.”
“Oi!” Sirius laughed. “I resent that.”
But something about the way he looked at Remus lingered in the air like static.
Spring at Hogwarts smelled like wildflowers crushed under running feet and soft, misty rain dripping from the edge of castle windows. Like fresh parchment warmed by sunbeams in the library, and the faint sweetness of treacle tart stolen too early in the morning. Like ink stains on his fingertips and the warm scent of Sirius’ jumper when he sat too close by the lake.
It was a kind of freedom that Remus had never known before. A quiet one, not loud or bright or even particularly easy, but it clung to him all the same — in the curve of his shoulders when they were no longer tensed, in the way his laugh came easier now. In the way he didn’t flinch when someone touched his arm.
Saturdays became sacred.
They’d sprawl out on the grass near the lake, the four of them — James with his shirt untucked and a blade of grass in his mouth like he’d invented nonchalance, Peter always fussing with his socks, Sirius propped up on his elbows with sun in his eyes, and Remus, always slightly apart, legs tucked neatly beneath him, a book beside him he rarely actually read.
They played Exploding Snap until their hands were smudged with soot and Sirius’ eyebrows were half-gone. They argued about Quidditch teams, with James and Sirius getting dramatically red in the face while Remus occasionally murmured “I don’t care” just to rile them further. Peter mostly nodded vigorously and chose whatever side Sirius was on.
By mid-April, the daffodils had started blooming near the edge of the greenhouses. They dared each other to sneak out and steal one for Pomfrey’s desk, and Remus, to his own horror, volunteered. His heart pounded in his throat the whole time, but Sirius had grinned like Remus had just turned into a dragon, and the stupid yellow flower had sat in the hospital wing’s windowsill for weeks afterwards.
Sirius never said thank you. But he didn’t have to. That grin had stayed with Remus long after curfew.
And then there were the kitchens.
It had started with James whining about being “literally wasting away” after missing dessert once for detentions, and Sirius raising an eyebrow like he’d been handed a challenge. A week later, they’d all snuck down to the portrait of the giant fruit bowl, giggling under James’ invisibility cloak. Remus had been the one who sketched out the escape route — clear, quiet corridors, backup paths in case of Filch, even a signal whistle Peter never remembered to use.
James would handle distractions if they needed them. Peter was always the lookout, nose pressed to the cold stone wall. And Sirius — Sirius walked into the kitchens like they were his.
And the kitchens, somehow, loved Sirius Black.
He’d wink at the house elves, toss his hair, and flatter them so easily it didn’t even sound like flattery. They’d giggle like flustered aunts and load his arms with pastries, custards, and tarts. He once left with an entire pie — untouched — just because he asked nicely.
Remus, watching all of this from behind the fruit painting, could only shake his head.
“More charming than he has any right to be,” he muttered, leaning against the cool stone.
James snorted, biting into a jam tart with no shame. “He’s got that whole ‘tragic prince’ thing going for him. Works wonders.”
Remus rolled his eyes. “Shut up.”
But his cheeks were hot. His fingers were glowing faintly with sugar dust and starlight, and the edges of his vision felt oddly soft.
And Sirius, emerging from the portrait hole with his arms full of stolen desserts, caught his eye and smirked like he knew. Like he could see the warmth buzzing just beneath Remus’ skin.
(He couldn’t. Probably. Maybe.)
Remus didn’t stop smiling the entire walk back to the common room.
Neither did his stars.
When summer came, it came like a cold bucket of water to the chest.
Hogwarts, which had once felt impossibly large and lonely, now felt like a home being ripped out from under his feet. He didn’t want to go. Not back there, where he was just the quiet, strange boy again. Where the silences in the house stretched too long, and his parents looked at him like he might break or bite at any moment.
Still, he packed. Folded his uniform slowly. Traced the edge of his trunk with steady fingers. He promised Sirius he’d write. Swore it to James and Peter, too, though none of them looked particularly worried. They all acted like they’d be seeing each other tomorrow. Because that’s how friendships worked when you hadn’t been alone before.
But Remus knew the truth. Summer could be long. And lonely. And sharp-edged.
Still. He wrote anyway.
Every single week.
He used the good ink, the one that shimmered slightly in the sun. His handwriting stayed neat at first — stiff, careful — but loosened the longer he wrote, like his thoughts had to rush out before he could start missing things again.
James’ replies came fast and loud, written in enormous loopy script with half the ink smudged from Quidditch gloves. They were full of new ideas — new tactics, really — for made-up Quidditch formations that usually involved three broomsticks and a ridiculous number of loops.
One letter read:
“Mate, what if we launch Peter off the back of the broom like a Quaffle? He’s smaller than one anyway.”
Remus laughed until his ribs ached.
Peter’s letters were charmingly awful — he was clearly trying to draw their faces on parchment, and Remus’ looked like a blob with a frown, but he kept every one. There was one where they were all tiny wizards with capes and swords, standing on top of a dragon labelled “Homework.”
Sirius’ letters…were different.
They always arrived last. Usually rumpled. Sometimes with bite marks (from what Remus assumed was a real dog, not metaphorical). His handwriting looped and crashed across the page, full of crossings-out and new tangents and dramatic declarations. He never really said what he was doing. But he always managed to make Remus laugh.
One read:
“Got caught trying to charm the portrait in my grandmother’s hallway into a chicken. Might be disinherited. Not sure. Would do it again.”
Another:
“Miss you more than I miss treacle tart. Which is saying something. Don’t let James convince you he invented ANY of those Quidditch moves. He’s a filthy liar.
Your favourite starboy,
Sirius (the dog one, not the actual star, but close enough)”
Remus read that one three times before tucking it under his pillow.
The summer sun was cruel in a way Hogwarts’ spring had never been. Hot and heavy, no breeze to speak of. His mum asked him to help in the garden. His dad offered him books on magical theory. They both tried. They always tried.
But there was a constant itch under Remus’ skin. A tug. A pulse.
He missed the lake. Missed the common room fireplace and James’ shrieking laughter and Peter’s nervous stammer. Missed Sirius’ voice — the way it sounded when he was teasing, and when he wasn’t. He missed that grin, the one that split Sirius’ whole face open like something brighter than sunlight.
He missed the way the stars on his skin had started glowing more often than not.
On the last night of summer, Remus sat at his bedroom window in silence.
His room was still. Too clean. His suitcase sat at the foot of his bed, half-packed. His wand lay on the windowsill beside a cracked Astronomy chart and a half-finished letter to Sirius he didn’t have the words for yet.
The moon hung high in the sky, almost full. Not quite. But enough to make him ache. His joints ached, too — a ghost of what was to come. The wolf in his blood never really slept.
He leaned forward, chin on his knees. His pyjamas were too thin. His ribs itched.
He reached under the fabric and pulled up the hem of his shirt, just enough to see.
Canis Major.
A constellation of tiny freckles, glimmering faintly along the edge of his ribcage. The stars were pale gold, shifting gently as if breathing with him. He traced it with one finger. Slowly. Reverently.
It hadn’t been there last year.
Not until spring. Not until him.
It shimmered under his touch.
Remus closed his eyes. Pressed his hand flat against it.
“I’ll be back soon,” he whispered, voice raw.
The stars pulsed beneath his skin, like they’d heard him.
And somewhere — far beyond the Lupin house, far above the clouds — something old and quiet stirred. A thread in the tapestry of fate pulled taut.
Not broken.
Just beginning.
The stars shifted. Remembered. Waited.
So did he.
In the starscape of fate, something stirred.
A single thread glimmered in the dark.
Unnoticed.
But not forgotten.
The stars remembered.