Astronomy ended in that drifting hush that follows long nights and too much sky. Cloaks pulled tighter, boots scuffed stone, and the tide of students rolled downward toward warmth and sleep, voices muted by the hour. Nolan slipped with them, a thin shadow nested inside the bigger shadow of the crowd, then eased himself into a side corridor where the noise fell away and the air felt clearer.
He moved to the tapestry of Barnabas the Barmy—a ridiculous, looping ballet of trolls that never improved no matter how many times one watched it. The colors fluttered in an unfelt draft. Nolan let his heartbeat settle. Then he shut his eyes and shaped the need with care.
A room for solo casting. Mirrors to check stance. Static targets with marked zones. Chalk, timers, and books—Transfiguration, Defence, Charms—laid out for drills. No opponents. No surprises. Just repetition.
He paced past the wall once. Twice. Thrice.
When he turned, a door had grown out of stone: oak darkened like old tea, brass fittings warm, the handle inviting and weighty. He placed his palm against it, felt the promise in the grain, and pushed.
The Room opened like it had been waiting. A steady, even light. One wall covered in tall mirrors that returned him at full height, angles unkind and exact. Five practice dummies—straw and leather—stood along the opposite wall, each painted with colored circles at chest, shoulders, hips, knees, and hands. Between them, dowel racks and wooden blocks, tin cans, corked bottles, cloth swatches, seed pods, and smooth stones—props laid out like a craftsman's bench. A long table held neat stacks of books: Intermediate Transfiguration, Practical Transformations and Reversal, Defensive Chains and Shield Discipline, Field Charms for Control. Chalk. A metronome. A sand timer. A clean cloth folded into squares.
He let out a breath that felt like it had been living in him since the hospital wing. "Good."
He shrugged off his robe, rolled his sleeves, and lit the metronome. Its soft tick-tock set a pulse in the room.
Transfiguration first. He picked a wooden block—palm-sized, edges sharp. The mirror returned his stance: feet too narrow, shoulders a touch high. He chalked a line at his toes and along the mirror to mark shoulder level, then adjusted until the lines matched. The block sat cool in his left palm. He memorized the weight.
"Square to pebble," he murmured to himself. "Hold. Reverse."
Wand up, arc small and tight, push at the end. The block collapsed into a rounded pebble—close but with a faint seam where the edges hadn't fully surrendered. He held the form for a slow count of three. Reversed. It snapped back with a whisper of grit. He logged a short tally mark on his parchment: 1. Below it: Seam—north side. Soften start.
Again. And again. Thirty times, then thirty more: square to pebble to prism to square, with holds at ten seconds, then twenty, then thirty. When the seam held clean, he underlined the tally and drew a tiny arrow on his note—start soft, finish crisp. He didn't write the theory; he wrote the cue that made his hand do it right.
New prop: seed pod, dried and bristled. He rolled it in his fingers, feeling its uneven spine. "Pod to cushion. No animal work solo," he reminded himself. His wand flicked. Spines melted into fabric; the shape rounded neatly, a tiny pincushion with the faintest angular stubbornness where the seam had been. Hold for five. Reverse. Again. Ten clean reversals or it didn't count.
The metronome ticked. He aligned breath to its count—inhale, arc, push, hold, reverse. His world became rhythm and mirror and the hard joy of small improvements.
He reset the table for Defence practice—no dueling, just chain timing. Chalk arcs on the floor marked shield radius. Colored discs, each the size of a palm, were pinned to the dummies. He chalked three dots on the mirror to mark his shoulder line, so he'd see drift instantly.
Protego into Stupefy on target one, then Expelliarmus on target two. Two beats between shield and strike to start. He whispered the count under his breath—"one, two"—to keep it honest. The first sequence went wide, red light slashing the edge of the shoulder ring. He set the wand down, reset his feet on the chalk, wiped the tip on the cloth, and tried again.
Fifteen sequences later, his shoulders stopped lifting at the shield. Twenty later, his Stupefy started landing center ring. He drew a little box on parchment: GRIP—ANGLE—RELEASE. He underlined ANGLE twice.
Charms to close the loop, but only those that reinforced control. Accio at measured distances—book from table to hand without overshoot. Arresto Momentum on a tossed sphere, freezing it exactly in front of his chest. Finite to collapse a prior charm without ripples. He counted the beats, logged the distances, and quit when his mind felt clean rather than cooked.
He left only when the metronome's ticking started to feel like it was inside his skull. He wiped the mirrors, reset the props, and left the door with that click a secret deserves.
Saturday lifted cool and bright. He skipped breakfast and returned. Fifteen drills through, sweat running behind his ears and his forearm prickling with fatigue, he stopped only because he would rather end on a correct cast than grind himself into sloppiness. Shower. Robe. Library.
Hermione was already there at their table, of course, a small fortress of neatly stacked books at her elbow and a parchment weighted at each corner. Her quill and inkwell were aligned like they were on parade. When she saw him, her expression went through its little sequence: assessment, slight disapproval at the minute he was late, then the quick brightening that meant the work would be good.
"You're one minute past," she said, not quite a rebuke.
He lifted a palm in surrender and sat. "Where do we pick up?"
"Transfiguration." She tapped a page. "Form integrity and reversibility windows. You've been practicing shape shifts—you're getting clean edges, but if you don't understand the mass-to-volume considerations, your reversals will wear thin."
"I'm not ignoring them," he said. "I just think better with a wand in hand."
"I know," she said. She did not smile, exactly, but the edges of her mouth softened. "That's why we'll do both."
They built a rhythm that was theirs. Hermione laid out the ratio logic in tight columns—mass, volume, surface complexity—color-coded with lines of blue and gold. She drew micro-diagrams of wand arcs, tiny vector arrows pointing to where force peaked. Nolan watched the diagram once, then looked at her hand when she demonstrated, wiring the feel to the motion. He wrote prompts: soften start, snap finish; grip box; hold-then-reverse at twenty seconds. He kept a tally grid on one corner of his parchment, neat squares he filled only when a cast met his standard.
She noticed. "You don't write the formula."
"I translate it," he said, and tapped his wrist. "Into a cue my hand can understand."
"That's…not wrong," she conceded, then added quickly, "but I'm going to test you on the reversal windows anyway."
"You'll get your numbers."
Her habits came into focus in their second hour. When recalculating, she tapped the edge of her inkwell in exact tempo—as steady as a metronome. When her curiosity sharpened, she leaned forward by a fraction and her curls slid over her shoulder, carrying a faint clean scent—citrus and parchment, like a page left out in sunlight. Her handwriting became tighter when she was excited, loops smaller, lines straighter. Before praising a cast, she paused, as if checking herself against the standard she believed in. It made each "good" worth more.
He suspected she noticed things too. He saw it in the way her gaze flickered to the chalk line on his sleeve cuff where he'd brushed his arm against the mirror earlier; in the way her eyes narrowed when he reset his feet between casts to the same width, every time; in how she clocked the thin callus line along his wand hand where repetition had quietly built something tough. Sometimes, right before he landed a perfect silent cast, his eyes went hard with attention. He felt it happen. He wondered if she saw it.
"Again," she said now, pushing a wooden block toward him. "Square to prism to pebble to square. I want clean reversals at ten, twenty, and thirty seconds. No seam drift."
He worked. She counted. Twenty minutes later, when his prism came back to square without the tiny ripple that had plagued him all week, she gave a small, contained nod that warmed him more than he expected.
Defence practice in the library had to be quiet—no spells fired—so they did the next best thing. Hermione set a watch and called cadences, and Nolan rehearsed the chain with wand movements alone: shield angle with elbow at the same mark, then two target strikes along fixed sightlines. She corrected his shoulder drift with two fingers and a crisp, "Lower."
"You're compensating with shoulder," she said, eyes flicking between his arm and the invisible lines she carried in her head. "Fix the grip. Thumb here."
He shifted. The movement felt cleaner. "Better."
"Again."
They walked to lunch together when the bell rang, parchment stacked neatly between them. He asked, as they skirted a gaggle of chattering Ravenclaws, "Seven? Astronomy Tower?"
She looked over, suspicious and curious in equal measure. "Why the tower?"
"There's something I want to show you," he said. "It'll help us."
"Seven," she said, and her voice made it a contract.
The day slid by full of paper and quiet. At six, Nolan went up to the tower alone; the sky unrolled a ribbon of bronze and rose along the horizon. He took a stick from his pocket and, with a gentle, practiced series of gestures, transfigured it into a flute. The old comfort settled in his hand, warm as breath.
He leaned on the cold stone and played. The tune was simple, the kind of melody that leaves room for whatever needs to rise up and leave. Notes threaded the air. The wind carried them away. His shoulders unclenched measure by measure.
When the last note faded, he turned and found Hermione at the landing, hands clasped loosely, eyes on his face rather than the instrument. She had not moved closer. She had not interrupted. Her expression was composed, but her cheeks held a hint of color that suggested she had climbed the stairs faster than she meant to.
"Sorry," he said at once. "Didn't mean to keep you."
"It's fine," she said, too quickly, then steadier. "I thought perhaps that was the something."
"Not yet." He tucked the flute away. "Come on."
They made their way through evening corridors, torches lifting small suns along the walls. At Barnabas' tapestry, he paced, mind fixed on the same clear need as before. The door slid into being with that satisfying inevitability the Room always had when one asked properly.
Hermione's mouth opened, closed. She glanced at him, a spark lit in her eyes he hadn't seen before—pure delight tucked behind discipline. He held the door.
Inside, the Room breathed order. Mirrors. Targets. Chalk. Books stacked with intent. On one mirror, faint ghost-lines from his earlier sessions traced a shoulder height and a wand path. On the table, a parchment grid of tallies and short cues sat beside a color-coded page that was unmistakably hers.
"You've organized it," she said, stepping in, voice gone quiet with approval. "And cross-referenced." She ran a finger above the book spines, not quite touching. "Intermediate Transfiguration, Defensive Chains, Field Charms—good."
He went to the mirror and pointed at the chalk marks. "I keep drifting here on shields. The chalk makes me catch it. I take ten clean sets before cutting the beat."
She nodded, already moving to the table and sorting their notes into a shared stack. She pulled a blue ribbon from her bag and tied the top corner—a color for Transfiguration. Gold for Defence would come next. The small motion felt like permission.
"Let's set a schedule," she said. "Two nights a week for Transfiguration—form integrity and reversals. One for Defence—chains and shield radius. And one for Charms control to support both."
"Done," he said. "We'll keep your ratios and my cues side by side. If the cast is clean, we don't care which column got it there."
She shot him a look that was half a warning and half a smile. "We care very much which column got it there. We simply allow that both have utility."
"Agreed," he said, unable to help the small laugh.
They worked an hour right then, just to mark the space with effort. Hermione called the holds; Nolan executed the shape shifts; they logged reversals; they tightened a shield dome until it kissed the chalk arc on the floor with satisfying precision. When a silent Stupefy landed three times in the center ring without a whisper, she gave him one of those small nods again—scarce and valuable.
When they left, they cleaned the chalk with a charm and reset the props. At the door, Hermione paused. Her curls had shifted loose during the hour; a strand brushed her cheek. She pushed it behind her ear with the same neat gesture she used to align her quill.
"This is good," she said. "This is…very good."
"It will be," he said.
In the corridor, the castle breathed around them—vast and old, humming with its own kind of kindness, the kind that offers hidden rooms to those who ask well. They walked in companionable quiet toward the main stairs, each a little aware of the other's presence in a way that felt new but not uncomfortable.
Behind them, the door melted back into stone, waiting for the next precise need to call it forth