The air in the subterranean corridor beneath Sector Six carried the mineral damp of wet basalt, pressurized lead conduits, and the coppery tang of anti-magic wards.
Arthur walked with disciplined strides, keeping his hands clasped behind the small of his back.
To his right, the iron-shod boots of an armored warden struck the flagstones in a heavy cadence. The guard did not look at him; his blackened visor remained fixed ahead, his right gauntlet resting on the hilt of a broad suppression blade.
It had cost Arthur every ounce of his standing to secure this descent. Forty-five minutes in Cole's auxiliary office, leveraging his unblemished record as Rank One, and a constructed narrative of pastoral duty—insisting that as the leader of the Honor Class, he bore the moral burden of assessing the spiritual stability of his peer before the Board finalized its tribunal dockets. Cole, terrified of the impending collision between House Devreux and the Mage Association, had yielded, stamping an escort pass with scarlet wax.
The warden halted before a monolithic iron door set flush into the living rock.
Three heavy bolts of cold-forged lead secured the frame. The guard drew an iron key from his baldric, slotted it into the lower keyway, and turned it twice. The mechanical click echoed like a hammer strike down the tunnel.
The guard turned his visor toward Arthur. His voice scraped through the grille:
"One minute."
"Understood," Arthur murmured, dipping his chin. "Thank you for your courtesy, officer."
The heavy door ground back on oiled hinges.
Arthur stepped across the threshold, his processor cataloging the geometry in a heartbeat.
A containment cube. Precisely four paces across, carved from bedrock. The walls, ceiling, and floor were reinforced with one-meter-thick slabs of basalt, lined with recessed lead sheets and etched with dormant suppression runes designed to ground out any elemental frequency below the Saint rank.
Yet the interior bore the strange marks of high-born diplomacy.
The Academy had dragged her here in chains, but they had not dared strip away her birthright. Against the far wall stood two polished oak beds dressed in clean linen and down pillows; a small mahogany washstand held a porcelain basin of clear water; a thick woolen runner insulated the floor.
Even in cuffs, Celeste Devreux was the sole heir to the most militarily formidable Grand Duchy in the Viera Kingdom. The bands around her wrists were lead-forged, but they were lined with soft blue velvet to prevent chafing, and the connecting chain was loose enough to allow full motion.
The Academy still has to show her courtesy, Arthur noted coldly. Even when detaining a monster, they tread lightly around the parents' army.
Celeste was not on either bed.
She lay flat on her back on the runner, wedged directly into the two-foot gap between the bedframes. Her cyan hair spilled across the dark wool like ink; her boots sat by the washstand; her uniform was rumpled, unfastened at the throat to expose her pale collarbones.
She stared at the blank stone ceiling, fingers lightly tapping a silent cadence against her velvet-lined cuffs.
Arthur exhaled through his nose. He took two steps into the cube, stopping short of the runner.
"What were you thinking?" he asked softly.
Celeste didn't flinch. Her amber eyes drifted down from the ceiling, tracking the hem of his trousers until they found his face.
She blinked once.
"About what?"
Arthur froze.
He stared at the unbothered, vacant curve of her lips.
She forgot already.
A weary breath dragged through Arthur's ribs. The sheer absurdity of her existence was an anomaly no text could categorize. She had leveled an academic wing, terrorized fifty scholars, dragged the island to the brink of institutional war, and landed in the deepest high-security vault of Sector Six—and the emotional slate of her mind had already wiped itself clean.
Arthur raised a hand, pinching the bridge of his nose against the exhaustion creeping past his defenses.
Celeste's eyes widened. A bright spark flared in her irises, and she propped herself up on her elbows with a sharp clink of her velvet chain.
"Are you ready for the duel today?" she asked, her voice bubbly with triumph. "I kept my promise! I saw the obsidian board this morning—I'm Rank Two! Exactly Rank Two! You promised we would duel on the first day of Year Two!"
Arthur looked down at her, caught between clinical disbelief and dry exasperation.
Even through the lead-suppression runes of the cell, his processor registered the latent density humming beneath her skin. The quad-elemental discharge that had leveled the Academia wing had not merely been unhinged output; Celeste had crossed the threshold into the Advanced rank in at least one element, if not more. His own Water proficiency had climbed through grueling training over the last three days, but it sat only at the 20th quotient—still mired in the lower half of Intermediate, while his other elements remained hard-capped at Beginner. In an official match under the eyes of the Academy, stripped of the Nameless Arts and restricted to his actual magic, he had zero chance of defeating her.
In that sense, her sudden incarceration was an unexpected mercy.
"Duel?" he said, his voice flat. "No way. Absolutely not. Look around you, Celeste. You're locked in a basalt box beneath Sector Six. We don't even know how long you're going to be in here."
Celeste tilted her head, her bangs falling into her eyes. She glanced at the thick lead-lined wall beside her, as if noticing the vault for the first time, then looked back up with a thoughtful pout.
"Hmm..." Her brow furrowed. "Do you have any caramels on you?"
"Of course not," Arthur replied, his voice dry. "The guards confiscated everything at the upper checkpoint. I don't even have my handkerchief."
The instant the refusal left his lips, Celeste's posture collapsed.
She did not argue. She simply let her elbows slide outward, dropping her head back onto the runner between the two beds with a dull flop. She turned her face to the wall, staring fixedly at the stone baseboard, retreating into her private, unreadable world.
She went entirely mute.
Behind Arthur, the heavy lead door swung inward with an abrasive scrape.
The armored warden filled the frame.
"Time's up."
"Alright," Arthur said softly.
The guard stepped forward, planting a steel gauntlet firmly on Arthur's right shoulder, guiding him back toward the corridor.
Arthur did not resist, but as his boots crossed the threshold, he looked over his shoulder at the crumpled shape of teal hair between the oak frames.
"I'll try to do something about lessening your sentence," Arthur said, the soothing warmth in his cadence steady and patient. "And I'll try to visit you every other day."
Kaelen said that there were some who pushed for execution, but the Devreux family is one of the most powerful in the world. As its heir, no power would dare execute Celeste, regardless of what offense she committed.
I said that I'd lessen her sentence, but the punishment will likely just be withholding her stipend at best, or expulsion at worst.
The thought of expulsion lagged his processor; by the time focus returned, the warden was already steering him across the threshold.
"Goodb—"
SLAM.
The one-meter slab of lead-reinforced basalt slammed shut, the sliding bolts shooting home with three concussive clacks that sheared his farewell into silence.
Inside the dark cube, the stone remained cold.
Celeste did not move. She lay between the two beds, cyan hair tangled across the wool, breathing shallow and slow.
Beneath her crossed arms, tucked against her ribs where the velvet cuffs rested, her small fingers curled tightly around a cold disc of unreactive metal.
The 10,000-credit platinum coin.
She held it against her chest, feeling the sharp ridge of the minted edge press into her skin, her eyes wide open in the dark.