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Ferrum et Risus

Summary:

A knight’s duty was simple — fight, obey, endure. Tommaso believed that was enough, until the jester’s laughter began to echo in places even steel could not reach.

(lat. Iron and Laughter)

Notes:

hello beautiful people~
Hope you will like this soft and gentle AU for Lucaso. I know nothing about Medieval times, but i really enjoyed romanticizing it.
This work was inspired by princess x knight aesthetics from pinterest, Lucio's style in Trieste, and my dear people from lucaso community who can't get over these two.

As always, you can follow me on tumblr - itselvil - or just come by to say hi.

Chapter 1: The Day the King Returned

Chapter Text

The castle stirred long before dawn.

Servants shuffled across stone corridors, their steps echoing through the cold halls. Iron creaked, doors groaned open, and the clang of steel on steel rang from the training grounds, where squires polished armor until it gleamed like silver. In the stables, horses were brushed and saddled; the air smelled of hay, sweat, and anticipation.

Today, the king was returning.

Tommaso had waited for this day more than he would ever admit. Two full moons had passed since Francis Delacroix — king, companion, sovereign — had ridden out with his retinue. For the first time in years, Tommaso had not ridden with him. It was not a punishment, not an exile, just… someone else’s turn. A rotation, perhaps. A small administrative decision that shouldn’t have mattered.

But it did.

And so, this morning, Tommaso put on his ceremonial gear with more care than usual, the leather straps of his breastplate pulled tighter, the hilt of his sword polished to a mirror shine. He was the very image of composure, but even he could not keep his fingers entirely still.

There were whispers in the court already — that the king had returned not alone, but with a new favorite . Not a knight, not a nobleman. Some foreign charm.

Not that Tommaso was jealous. No. Between him and the king, there had always been something steady, almost brotherly: trust, respect, battles fought side by side. But he was curious. Curious who could win Francis’s favor so quickly. Curious what sort of person could nestle themselves into a place that had once felt like his.

And still — he heard it before he saw it.

A sound, small and high and wrong: a bell, faint and distant, ringing where no bell should have been. Not the great bronze of the chapel or the training yard’s call to arms. A smaller, sharper chime. Mischievous. Mocking .

He turned.

Across the street, perched on a stone balcony of one of the old merchant houses, sat a figure.

White, like a smudge of moonlight against the soot-dark buildings. Garments that may have once been grand but now hung loose. Bells stitched into the cuffs of wide, almost theatrical sleeves. Long hair fell like a shadow over pale face paint. And eyes — alive. Smirking. Watching him.

Then came the voice, low and bright:

“Is it custom here for knights to strut through the market like painted horses, or is it just you who likes an audience?”

Tommaso froze.

The people didn’t even notice, but to him, the words hit like a glove tossed at his feet.

Before he could reply, the figure gave a wicked grin — sharp as a knife — and disappeared back into the building like smoke pulled by the wind.

Tommaso stood a moment longer than he should have, jaw tight. He was not a man easily provoked. And yet.

 

The evening sun cast gold across the castle’s stone walls as the feast began.

The king had returned, and so had his circle: nobles and knights, advisors and allies. Tommaso was at Francis’s right, as he had always been, their conversation flowing as easily as old wine. Stories were exchanged, laughs shared. It felt right. Familiar.

Until Francis lifted a hand and stood.

“My friends,” he said, his voice commanding, joyful, “tonight, I offer more than food and drink. I bring you something far rarer — a spectacle, a delight.”

A pause. The hush of the room leaning in.

“Allow me to introduce the newest member of our court… a spirit too wild to chain, yet far too brilliant to let go.”

And from the shadows emerged a troupe of performers. Tumblers, dancers, laughter in motion. And in the center of it all, dressed in silver and white, the smirking phantom from the balcony.

The bells on his sleeves rang again.

Tommaso’s breath caught.

He recognized him instantly, though the light was dim and the paint more intricate now. And this time, the smirk was aimed directly at him .

Their eyes met. And something inside Tommaso shifted — something cold, coiled, and waiting.

The performance was, by all measures, a success.

The hall filled with clapping and cheers. The troupe spun and leaped across the stone floor with strange, fluid movements — half dance, half chaos. They juggled, played small instruments, turned flips in midair. And in the center, always the eye of the storm, was the jester.

He moved like he wasn’t bound by the rules of the room, or the floor beneath his feet. His sleeves flew as he spun, the bells on his cuffs chiming with each step. At one point, he brought a wooden flute to his lips and played a tune so light and clean that the hall seemed to breathe with it.

Tommaso did not want to be impressed. He had decided, firmly, that this man was too loud, too proud, too much.

But the music… It crept under his skin. Warm, smooth. Like something poured.

And the jester didn’t seem so out of place anymore. At some point, even the sound of his bells didn’t bother Tommaso as much.

Still, he kept his posture. He would not be the first to smile.

When the show ended, the performers bowed and backed away. The hall was alive with talk and laughter. The king raised his hand again, smiling wide.

“Lucio,” Francis called, “come.”

The jester approached the high table, the silver threads in his clothes catching the firelight. His face was still painted, but softer now, and Tommaso noticed his eyes were darker than he’d thought — almost serious beneath all that show.

Francis looked pleased.

“This,” he said to the others around him, “is Lucio Corsi of Maremma. A treasure from our travels. He has a tongue sharper than his flute, so watch your pride.” He turned slightly. “And Lucio — this is Sir Tommaso. My most trusted knight. My brother, in all but blood.”

Lucio gave a slight bow, the bells on his sleeves whispering.

“A pleasure,” he said, voice light. “I was worried this kingdom had no proper statues. Turns out they just dress them in armor.”

Someone at the table laughed. A few chuckles joined. The king’s was loudest of all.

Tommaso didn’t move, didn’t smile.

“I stand very still when I’m annoyed,” he said calmly.

Lucio tilted his head, amused. 

“Good to know. I’ll watch for that.”

Francis clapped Tommaso on the back. 

“You’ll get used to him. We all need a bit of fire in this cold stone place. Admit it — he brings something we didn’t even know we were missing.”

Tommaso said nothing. But something in his chest tightened.

This man — this Lucio — was not simple. Not harmless. He was too quick. Too sharp. Too aware.

A menace .

 

The troupe performed again, lighter this time, with more dancing. The wine flowed, and nobles took to the floor in pairs. Tommaso sat for a while, listening, watching. But the room began to feel too warm. Too loud.

He rose, meaning to slip out quietly.

He didn’t get far.

Just as he crossed between tables, the music shifted, faster now. And suddenly Lucio was in front of him again, moving with the rhythm, stepping lightly around him in a slow, deliberate circle.

Tommaso stopped. The room noticed.

Lucio raised both hands and spun in place, letting the bells ring clear. He stepped closer — too close — and moved as if inviting Tommaso into the dance. Around them, laughter rose. Someone clapped to the beat.

Tommaso’s jaw tensed. He wasn’t one for games. But still — he caught Lucio’s wrist. Not roughly, but firm.

He pulled the jester just close enough to spin him, letting his arm unwind in a neat spiral. Once. Twice. Then he stepped back, gave a slight bow, and turned to leave.

The cool air in the corridor hit him like a wave. Stone. Silence. He inhaled slowly.

This place, with its cold walls and clear rules, had always felt right to him. Order. Discipline. Respect. And now… now something had cracked the stillness.

He didn’t hate it. But it needed time. It couldn't change overnight.

And that man — Lucio — was a trouble. He knew it already. And the sound of bells still echoed faintly in his mind.

 

The evening had softened into quiet.

After the noise of the feast, the clapping and tambourines, the laughter that had bounced like coins off the stone walls — Tommaso had stepped outside. The air beyond the hall was still cool, touched by the scent of lavender hedges and the last breath of summer.

He didn’t know how long he’d been sitting there, in the garden behind the south wing. Time felt suspended, like a sword held mid-air — motion waiting for intent. He leaned back on the bench, shoulders aching under the memory of armor, legs stretched out like a soldier too tired to stand. His thoughts turned toward the stables, the weight of tomorrow’s training. The long ride at dawn. The bruise on his collarbone that never quite healed. The dull clatter of iron on iron that would echo in his ears before the sun even touched the towers.

He sighed. It was not unpleasant. Just... heavy.

Somewhere far off, a lute was still playing — thin and wavering, like it had grown tired of dancing. He let his eyes close.

And then —

Footsteps. Light ones. Quick.

Tommaso didn’t move, but his body knew. Knew the rhythm. The weightless stride of someone who danced even while walking. A whistle pierced the quiet — careless, confident — and then a voice joined it, half-song, half-laughter.

Lucio. Of course it was him.

Tommaso opened his eyes, but didn’t turn. He could hear the jester coming along the garden path, likely unaware anyone was nearby. His boots barely touched the ground. He must have been heading to his chambers, wherever they were — perhaps tucked somewhere behind the kitchens, or with a private stair from the west tower.

And he was singing.

“Oh knight in iron, cold as the moon,
with a fire inside that hums out of tune…”

It was some foolish little song. A taunt. A story told sideways.

"Embrace him too tightly, he’ll melt through your arms,
and you’ll wake with the tide curled around your charms.”

But Tommaso stayed still. Every word threaded through him like silk pulled tight. He didn’t believe for a second the song was about him. Lucio sang like he breathed — for no one in particular, and everyone at once. But something in the words pricked just deep enough.

He watched — from shadow, from stillness — as Lucio’s figure passed under the archway, turning briefly to catch the moonlight. Then he vanished behind a narrow wooden door, still humming, still glowing with some impossible light.

Tommaso’s gaze stayed on the empty path for a while longer, until even the echo of the song had dissolved. And only then did he let out a slow breath — the kind you don’t know you’re holding until it’s gone.