Chapter Text
Harry is stretched out on the sofa in his quarters, a mug of tea cooling on the low table beside him. His rooms sit on the western side of the castle, just far enough above the greenhouses that, with the windows open, he can hear the faint hum of the glass panes shifting with the breeze. It’s a quiet corner of Hogwarts, close to the staff quarters but with its own narrow corridor and a view over the Black Lake that catches the late-afternoon light. He’s been here for years now - long enough for the castle to feel like home again, to make these rooms feel like truly his - but not so long that he’s stopped noticing the small ways it changes with the seasons.
He's trying to do more of that, recently.
He’s spent most of the afternoon with Neville and Eliza - otherwise known as Professor Marlowe from Muggle Studies - loitering in the staffroom long after the conversation drifted from lesson plans to the merits of treacle tart versus jam roly-poly. These days, that’s his social life: endless tea, sprawling conversations, and the kind of steady camaraderie he didn’t realise he’d missed until he had it back. He’s not a professor - his work in magical habitat research keeps him moving between the castle, the greenhouses, and the edges of the Forbidden Forest - but the staff pulled him into their orbit long ago, folding him into routines and friendships without him ever really trying. He didn’t exactly know what to do with himself at first, the strange imposter syndrome clawing all the way up his throat despite Hogwarts being the place he always felt most at home.
He’s half-thinking about changing for dinner, debating whether he can get away with skipping the Hall and bribing the house-elves for a tray instead, when a sudden draught sweeps through the open window. A second later, a tawny owl shoots into the room with a flash of parchment clamped in its beak.
The bird lands neatly on the arm of the sofa, offering up the letter with a low, impatient hoot. The wax seal is unfamiliar, but the handwriting across the front pulls Harry upright before he’s even broken it. It reminds him of Ron’s own bold scribble, but it’s slightly more polished – cursive, at that. Unless Ron picked up calligraphy lessons since they’ve last gotten drunk last Wednesday, Harry’s pretty confident it’s from one of his siblings.
He opens it slowly, eyes skimming to the signature at the end as the first thing.
Charlie Weasley.
Harry sinks back into the sofa, running a hand through his hair as he tries to pin down the last time he saw the man. Charlie had travelled with the dragons to Hogwarts for the Triwizard Tournament fourteen years ago, but Harry is fairly sure they spoke - or at least managed a few words - in the days just after the war ended. That must have been… nine years ago now. Since then, Charlie’s been a name dropped in passing: Molly mentioning a visit cut short by work at the reserve, or Ron muttering about “that ridiculous broom race” they’d managed during a family gathering. Harry’s always seemed to just miss him - wrong week for Christmas at the Burrow, a cancelled trip here, an early departure there. Enough to feel like they were orbiting each other without quite crossing paths.
And maybe that’s why the letter feels a little strange in his hands - because he doesn't feel like the Harry that Charlie would remember. Not that he thinks better or worse of himself now, but the time has done what time always does. The years have left their marks: a few lines of wear at the corners of his eyes, the comfortable weight of experience, and a handful of small rebellions. One of them glints gold in the light - a neat piercing in his eyebrow that still makes McGonagall sigh when she catches sight of it. He’s filled out a little, his stance more deliberate, his edges smoothed in some places and sharpened in others. Growing into himself has been a slow, stubborn process, and it wasn't just physical - it was the kind that comes when you’ve had to piece yourself back together and decide, step by step, what to keep and what to throw out.
Humour’s hardly the healthiest coping strategy, but it’s the one that stuck. And somewhere along the way, Harry realised he could - within reason, and sometimes well beyond it - do whatever the hell he wanted. There’s a certain freedom in that, and Harry’s learned to make good use of it.
His eyes return to the start of the letter.
Harry,
I hope you’ve been keeping well and that life at Hogwarts is treating you better than the last time we spoke.I came across your papers on emotional magic in habitats. Hagrid sent them along, said you’d been doing fascinating work. I read them all, and I’ll admit, a few parts went over my head. But the rest… well, it made me think you might be the one person who could help us make sense of something that’s been happening here at the reserve.
For the past couple of months, every dragon - regardless of age, sex, or species - has been on edge. Not sick, exactly, but agitated in ways that don’t match any seasonal patterns or breeding cycles we know. There’s a pattern to it, but it slips through our fingers the moment we think we’ve caught it. One week we’re sure it’s tied to the storms; the next, the skies are clear and the behaviour’s worse.
We’ve gone through every usual suspect by now: feed, water sources, weather shifts, even changes in the handlers’ rosters. We’ve had the healers in twice to check stress markers and overall health - clean bills across the board. We examined the wards from top to bottom, reinforced the perimeter charms, ruled out external interference - no raiders, no magical predators, no lingering curse residue from the older containment spells. In short, every obvious cause is off the table.
The pattern part is what made me think of you, especially since the agitation isn’t constant. It rises and falls in a rhythm that’s got nothing to do with the environment as it is now. It feels… odd.
I wondered if there is a way to check for signs of what you mentioned in your third paper - the section on “emotional echoes” in magical terrain, where a place can carry imprints strong enough to re-emerge years or decades later, independent of current conditions. Would you be willing to talk more about what could have caused it, and whether it could be, say, the land itself that's the problem?
Do tell me to fuck off if you’re not interested. I’d still like to know how you’re doing, though. There’s only so much one can piece together from the stack of weeks-old newspapers that get here – unless you really did recently propose to Celestina Warbeck’s mother in Flourish and Blotts. In which case, I sincerely apologise for the judgy tone and will expect an invitation.
Charlie
Harry reads the letter through once, then again, slower. He’s surprised Charlie’s read his papers at all - even more so that he’s quoting them back. Most people skim, nod politely, and change the subject when he talks about long-term magical memory in landscapes. He gets it - not only is it fairly unexplored, it’s also, as Hermione herself likes to remind him, “hopelessly nerdy.”
He never thought he’d be doing this. If you’d told his seventeen-year-old self that a decade later he’d be elbow-deep in survey maps, cross-referencing plant growth with recorded instances of magical trauma, he’d have laughed in your face.
And yet here he is.
Cyclical agitation. No seasonal cause. Nothing in the wards or health checks. If the land really is holding on to something, letting it surface on its own rhythm… it could be any number of things. Old magic. Trauma. A long-forgotten event leaving a mark deep enough to ripple through the years.
It’s the kind of puzzle he likes best - messy, layered, impossible to solve without really looking at the place. And looking is something he’s been doing for years now, almost by accident. After the battle, when he stayed to rebuild, it was impossible not to notice that Hogwarts felt different. Not just because the walls were cracked or the grounds were chipped, but because the very air seemed to carry the memory of what had happened. Certain corridors felt heavier, quieter, even when full of noise. The greenhouses grew differently - faster under a happy Pomona, sluggish when she was worn down. The Forbidden Forest seemed to shift mood from one glade to the next, some alive with sound, others unnervingly still.
When he’d mentioned it to McGonagall, expecting a polite dismissal, she’d just paused, looked over her spectacles, and said, “Observe it properly, Potter. If you’re going to notice things, put it to use.” With her permission, he stayed on, building observations into something more formal.
It turned out the patterns were measurable. The land and its ecosystems did respond to emotion - to grief, joy, fear - especially when the magic in that moment was strong. He’d proven that much beyond any doubt. The real challenge, the part that still kept him up at night, was figuring out how to prevent those imprints from turning destructive, or how to rebalance them after the damage was done.
The Thestrals became his best allies in that work. They were creatures shaped by grief, their very visibility a mark of it, and the herd in the forest had been through the battle just as much as the castle had. Watching them, and watching the land they roamed, gave him living proof of what he’d suspected since those first weeks after the war: magic and memory didn’t just touch a place, they could settle into it, altering it in ways that lingered long after the moment had passed.
He spends his days reading, writing, walking the same trails until he can feel the smallest changes underfoot. Sometimes it’s quiet enough that he forgets there’s a whole school just beyond the trees. Sometimes the air hums with magic so thick it prickles against his skin. And now, for the first time, someone outside these walls is asking if he can make sense of it - not out of politeness, but because they might actually need him to.
His eyes flick back to the bottom of the page. Do tell me to fuck off if you’re not interested.
Harry huffs out a laugh before he can stop himself, rubbing the back of his neck. He wonders if it was meant to come across as playful as he took it, or if that was just Charlie’s default tone bleeding through.
In which case, I sincerely apologise for the judgy tone and will expect an invitation.
He shakes his head, a faint smile tugging at his mouth. Yeah. Still a Weasley. He sets the letter down, tapping it once against his knee, mind already pulling together the questions he’ll need to ask.
Charlie,
It’s good to hear from you - it has been far too long.I’d be very interested to hear more about what’s happening at the reserve - if you’ve read my papers, you’ll know I’m not likely to turn down the chance to study another possible case of long-term magical memory in the land. Not many people are willing to let me examine both their ecosystems and their emotional grudges.
I should say up front - I’m hardly an expert in this. I’ve only been working in this field for a couple of years, and my research is mostly observational. And while it’s been enough to convince most of the magical world that it isn't just a nice theory - the challenge is working out exactly how and why it happens, and how to identify the signs early enough to help without disrupting the balance.
If you can, could you send me:
- A rough map of the affected areas (and whether agitation levels vary between them)
- Any notes or logs from the past three months, including specific behaviour changes
- Details on any recent ward reinforcements, repairs, or boundary alterations
- Any previous incidents in the reserve’s history that might leave a lingering emotional imprint
The more context I have, the better I can cross-reference it with similar cases. If I spot anything that could point it to be memory related, I will let you know.
And for the record, I did not propose to Euphemia Warbeck in Flourish and Blotts. She proposed to me.
Harry
At dinner, he sits with Neville and Eliza, listening more than talking. Neville notices, of course.
“You’re thinking about something quite hard in there,” he says, glancing up from ladling gravy onto his plate to gesture at Harry's forehead.
Harry shrugs, the corner of his mouth twitching. “Am I?”
“That’s your 'puzzle face',” Neville says knowingly. "Haven’t seen it since we tried to sneak into Flitwick’s office to measure him for a Halloween costume without him noticing.”
Harry doesn’t deny it, but he doesn’t explain either. The less fuss made over it, the better - at least until he’s sure there’s something worth fussing over.
Later, in his quarters, the letter from Charlie sits on the low table beside his tea while he skims a book. He keeps glancing at it without meaning to, the details circling back through his head.
Maybe he ought to pay Hagrid a visit again. He certainly didn’t mention sending any of his work over to anyone when he's last seen him.
Harry doesn’t expect a quick reply. By the time he’s sent his letter off with one of the school owls in the evening, he’s already resigned himself to waiting at least a week. Records, maps, ward logs - it’s the kind of thing that takes time to track down, especially at a place as sprawling and unpredictable as a dragon reserve.
Which is why the small greyish owl swooping down onto his breakfast plate in the Great Hall the next morning makes him blink mid-spoonful.
“Oi,” he mutters, steadying the edge of the plate before it tips. The owl steps onto his arm without hesitation, feathers warm against his sleeve, and waits patiently while he unties the parchment from its foot.
The seal breaks easily, Charlie’s handwriting curling across the page in confident loops.
Harry,
Thanks for this - it’s more than I hoped for. I'm sure you have plenty work to focus on outside of this, so I appreciate it. I’ll start collecting what I can straight away. Some of the older records might take a bit of digging, but I’ll get them to you along with the maps, logs, and weather data as soon as they’re in some kind of order.
I see you’re just as sassy as I remember. Good. Would’ve been a shame if you’d gone all sensible.Charlie
Harry huffs a quiet laugh, shaking his head as he folds the letter once and sets it beside his plate. There’s a flicker of something at the back of his mind - curiosity, amusement, maybe a hint of satisfaction at the idea that Charlie remembered enough to make the comparison at all.
He thought about this while reading his first letter just yesterday - sometimes it feels like almost everything has been taken apart and rebuilt. And yet, with one line, Charlie’s reached back through all of it and found something that stayed. It’s strangely grounding, the thought that someone who barely knows the man he’s become can still spot the thread that runs straight through. It makes him feel, unexpectedly, a little seen.
He tries to ignore Minerva’s knowing gaze from opposite him as he fights his smile down. His mind itches to go over his old notes - every other site he’s surveyed in the last three years, from the moss-slick glades in the forest to the weathered ruins beyond the northern boundary. Grimmauld Place, too, when he’d finally been able to strip back the layers of old magic and see what the house had been hiding. But nothing has ever been this large-scale, not even the forest - as far as he knows, the reserve spans across nearly a hundred square miles of rugged, warded terrain.
By mid-morning he’s in Greenhouse Four with Neville, who’s got his sleeves rolled up with an expression of concentrated determination as he wrestles a magical basil plant back into its own bed. Harry and Eliza aren’t here for anything urgent. They’re both free for the hour and, in the way things often work at Hogwarts, have wandered in to “chat”, only to be roped into re-potting.
Eliza crouches opposite Harry at the workbench, her cropped chestnut hair escaping in wisps from a loose bun, brow furrowed as she tries to untangle one plant’s roots from another’s. She’s quick-witted in that understated way where you realise she’s already ten steps ahead in the conversation; sharp enough to call Harry out when he’s distracted, kind enough to change the subject if it’s not the right time. They’d hit it off almost immediately - same age, same dry humour, and a shared knack for bridging the gap between the magical and muggle worlds.
Muggle Studies had shifted after the war from a fringe elective to a core subject for younger years - the idea being that understanding the non-magical world might close some of the divides that had helped feed the conflict in the first place. Eliza, who grew up with one foot in each world, was an obvious choice for the post. She’d told Harry once that her first term was “equal parts explaining the internet and unteaching twenty years of bad muggle movie stereotypes.”
They talk easily as they work, the rhythm familiar: Eliza teasing him about his potting technique, Harry pretending he’s too good for gloves, the both of them quietly competing to see who can finish more without damaging a single root. From the far side of the greenhouse, Neville’s voice drifts through the rustle of leaves and clink of terracotta - occasional commentary about which plants are being “helpful” and which are “absolutely taking the piss.”
Eliza leans over the bench to swipe a stray leaf from Harry’s jumper. “So, what’s got you looking like that this morning?” she asks, her tone casual but her eyes sharp.
Harry lifts one shoulder, keeping his gaze on the plant in front of him. “Some prospective work.” he says, tone deliberately vague.
Her eyebrow arches at the way Harry ignores the subtle poke. “Mm-hm.”
From somewhere inside a dense patch of shrivelfig, Neville calls, “Not the bloke from the bar last week, then?” His head pops into view, grinning like a man who’s not nearly busy enough to mind his own business.
Harry’s fingers still on the rim of the pot. The memory flickers - warm hands, a too-eager smile, the kind of attention that felt good in the moment but hollow underneath. He’d almost taken the man home. He’s not proud of it.
It’s been a while, and part of him had wanted something - anything - to take the edge off. But it had been clear the blonde was only there for the novelty of the name, not the person. Harry had got his head on straight somewhere between the third drink and the walk outside, mumbled something about an early start, and stumbled home alone to curl around his pillow instead.
He’s not lonely. Not often. It’s more that every now and then the quiet stretches a little too far, and the urge to fill it - even with something meaningless - creeps in. He’s learned to wait it out.
“Didn’t work out,” Harry says finally, reaching for a fresh pot.
Neville makes a sympathetic noise that’s only half sincere. “I’d say your standards are too high, but I agree with you this time. Bloke didn’t even know what a flutterby bush was.”
“My standards are exactly where they should be,” Harry counters, and Eliza snorts, shaking her head as she presses fresh soil around the base of her plant.
“I had a look around too,” she says, lips curving. “Didn’t see much worth my time either. Closest thing to a decent prospect was the barman, and he was far too busy being horridly understaffed.”
Harry huffs a laugh. “You spent the whole night complaining about the lamps.”
“I spent an hour on my makeup,” she adds, tossing a bit of soil back into the pot with mock solemnity. “If I’m going to waste my time on small talk, I at least want good lighting to show off the sparkle.”
Neville snorts from his corner, muttering something about “priorities” under his breath, and the three of them fall back into the easy rhythm of work. Outside, the autumn light shifts against the glass panes, gilding the leaves and turning the soil almost black.
The day’s clear and cold, and he spends the rest of it out past the forest boundary, notebook in hand, watching the thestrals pick their slow way through the thinning grass.
They’re quieter today, their wings folding neatly against their sides as they forage, the faint shimmer of their black hides catching what little winter sun filters through the clouds. Every flick of an ear, every slow stretch of a wing is a reminder of his past - sharp and unshakable, as much a part of him as the scar on his forehead. But he doesn’t mind it anymore.
If anything, there’s a strange comfort in their presence, in the fact that they keep existing, keep moving forward without apology.
He scribbles a few observations into his notebook, pausing now and then to push his glasses up his nose and watch the herd settle again. Nothing remarkable today - no changes in their grazing patterns, no unusual restlessness.
By the time he’s back inside, the castle’s already humming with the low sounds of evening - distant footsteps, the soft rattle of a cart of dishes in the Great Hall, the occasional hoot of an owl passing the window. He takes his tea by the fire in his quarters, the warmth loosening the chill from his hands.
Charlie’s already promised to send the maps and records once he’s dug them out. It’s not urgent. But Harry can’t quite let it sit unanswered - not when he’s been picturing the reserve all day, imagining its scale, its edges, the wind over it. He wants more than numbers on parchment.
He moves to his desk, pushes a stack of books aside, and pulls a sheet of parchment towards him. The quill hovers for a moment before the words come, easy enough in the quiet.
Charlie,
Can you include some photos of the reserve too, please? I realise it’s a big place, but at least a few would be helpful from different areas.
He pauses here, tapping the quill against his knee. The sensible part of him says to sign off and leave it at that. The other part - the one Charlie seems to have woken up with a single line - can’t resist.
I struggle to imagine what memories of me you’re working from – but I can assure you they’re inaccurate. Euphemia is deeply hurt by your disbelief.
Harry
He reads the letter over once, lips twitching at the last line, then folds it neatly and brings it to the waiting school owl. The bird takes off into the night with a quiet sweep of wings, disappearing past the window’s edge.
Harry returns back to his quarters and sits back down by the fire, reclaiming the chair and the cooling mug on the side table. The tea’s gone lukewarm, but he drinks it anyway, watching the flames shift in the grate and wondering - not for the first time today - what the reserve looks like in late autumn.