The classroom was finally mine.
Not the library. Not a shared hall. Not a temporary space between chaos and arguments.
Mine.
I stood at the front of a stone chamber carved directly into the castle's inner structure, twelve students seated before me in a semi-circle. Only twelve. Carefully chosen. Carefully filtered.
Quality over quantity. Always.
The others could handle dozens of students at once—loud, chaotic, inefficient. That wasn't how I worked. I wanted precision. Focus. Control.
And in front of me?
Potential.
"Today," I began, my voice calm but sharp enough to demand attention, "you stop being students… and start becoming contributors."
Twelve pairs of eyes locked onto me. Luna sat slightly to the left, posture straight, emerald eyes focused as always. She'd advanced the fastest out of all of them—but I didn't treat her differently. Not here. Not in class.
I turned and flicked my wand.
A section of the wall shimmered, revealing the underlying stone structure—hundreds of bricks, each bare, each untouched by true magical reinforcement.
"This castle," I continued, "is incomplete."
A murmur went through the group.
"Yes," I said flatly. "All the grand halls, the towers, the moving staircases—impressive. But structurally? Magically? It's inefficient."
I tapped one of the exposed bricks.
"That changes now."
With a precise motion, I traced a rune into the air. It glowed softly—intricate, layered, alive with intent—before embedding itself into the brick. The stone pulsed once, then settled, stronger than before.
"Runes," I said, turning back to them, "are not decorations. They are foundations. Permanent magic. Stable magic. Magic that doesn't rely on constant casting."
I let that sink in before continuing.
"You will each be assigned sections of the castle. Every brick you touch will be inscribed. Carefully. Precisely. Incorrect runes will be removed and redone until they are perfect."
A few students shifted nervously. Good. They understood this wasn't a simple lesson.
"This is not just practice," I added. "This is responsibility. You are reinforcing Hogwarts itself. Every correct rune strengthens the castle. Every mistake weakens it."
I paused, letting the weight of that settle.
"No pressure."
A few nervous laughs.
Luna didn't laugh. She was already analyzing the rune I'd cast, her eyes tracking its structure, memorizing it.
Of course she was.
I allowed myself the faintest hint of approval before continuing.
"You will start with basic reinforcement arrays," I said, flicking my wand again. Twelve smaller rune patterns appeared in the air, each tailored slightly to the student observing it. "Memorize them. Understand them. Then apply them."
One of the younger students raised a hand hesitantly. "Professor… what happens if we get it wrong?"
I met their gaze evenly.
"You fix it," I said simply. "Until you don't get it wrong anymore."
Silence followed.
Then I clapped my hands once.
"Begin."
The room came alive. Students moved toward the walls, carefully tracing runes, some hesitant, some confident. Magic flickered softly as the first inscriptions began to take hold.
I walked between them, observing, correcting with small, precise adjustments. A flick here. A slight shift there. No wasted movement. No unnecessary words.
When I reached Luna, I paused.
Her rune was… nearly perfect.
Of course it was.
"You're overcompensating the lower curve," I said quietly, pointing with two fingers. "Reduce the flow by about ten percent."
She nodded immediately, adjusting. The rune stabilized instantly, embedding into the brick with a clean pulse of magic.
"Better," I said.
She glanced up at me, a small smile forming. "Thank you."
I held her gaze for half a second—just long enough to feel that familiar warmth—before moving on.
Professional. Controlled.
Always.
Hours passed. Slowly, brick by brick, rune by rune, the castle began to change. Strengthening. Stabilizing. Evolving.
And for the first time since everything—the rejection, the anger, the chaos—I felt… grounded.
This was what I was meant to do.
Teach. Build. Create something lasting.
Not just spells.
Not just power.
But a legacy.
I stopped at the center of the room, watching my twelve students work, magic flickering softly across stone walls that would one day stand for centuries.
A small, satisfied smile crossed my face.
"Good," I murmured to myself.
Very good.