Sorcerer Rui Kamishiro

The Dark Kingdom’s castle did not welcome guests.

Its towers were too thin, too tall—spires of black stone curling into the fog like claws frozen mid-reach. Corridors pulsed faintly with runes embedded in the walls, glowing dim violet beneath polished obsidian floors. Even the air smelled faintly metallic, like stormwater caught in stone.

Rui moved through it effortlessly.

His boots made no sound as he descended the curved staircase overlooking the grand receiving hall. From above, the visitors were already assembled: the so-called blond prince in pale regalia, his ginger “advisor” standing slightly behind his shoulder, and the pink-haired maid hovering near the edge of the light like she wished she could melt into the shadows.

Rui leaned against the railing, scarred fingers resting along carved glyphs that responded to his presence with a soft shimmer.

Interesting, he thought.

He’d felt it the moment they crossed the border—a ripple in the ley lines. Not hostile. Not exactly foreign.

Carefully masked.His gaze fixed on the prince,

Tall. Composed. Sun-colored hair that bordered on theatrical beneath the gloom of the hall. The cut of his posture was flawless, the sort trained into nobility from childhood.

And yet, Rui tilted his head.

The way Tsukasa scanned exits first instead of courtiers, the way his weight settled on the balls of his feet rather than into leisure. The stillness of someone accustomed to armor.

That, Rui decided, is not how princes stand. He descended the final steps.

The captain of the Dark Knights—Toya—noticed him first and straightened slightly. The princess, Mafuyu, paused mid-sentence.

Rui ignored both.

He crossed the marble floor with lazy strides, violet eyes never leaving Tsukasa’s face. Magic hummed faintly under his skin—not a spell, just a sense extended outward like invisible threads brushing against aura and illusion alike.

When he stopped in front of the group, he bowed—not deeply. Just enough to be polite. Just enough to be unsettling.

“Prince Tsukasa of the Golden Palace,” Rui said, voice light and curious, as though tasting the words as they rolled off his tongue.

“The king has asked me to assist with your stay.”

Tsukasa’s eyes flicker to Rui, wary of his sudden approach.

“Rui Kamishiro,” he added, scarred hand touching his chest. “Court sorcerer.” A thin smile curved his lips.

“Forgive my bluntness, Your Highness… but our borders have been unstable as of late.” His magic brushed closer now—not invasive. Merely present.

Watching.

Listening.

“Would you mind,” Rui continued pleasantly,

“telling me what brings the Golden palace’s royalty so deep into shadow?”

His eyes sharpened just a fraction.

Not accusatory.

Not yet.

But searching—like someone already halfway convinced the answer would be fascinating.

The lower archives were never meant for visitors.

Dust clung to the air in silver motes, drifting lazily through lanternlight as shelves carved from black stone curved downward into the earth. Old wards pulsed along the walls; thin, skeletal veins of magic meant to keep whatever slept inside from stirring again.

Rui walked ahead this time.

Not out of authority, but out of habit.

A faint thread of sorcery trailed from his gloved hand, mapping corruption levels along the corridor floor. Stable. For now.

Behind him, he could hear the soft echo of footsteps that had grown… familiar.

Too familiar for his liking.

He didn’t turn right away.

They had spent weeks like this—inspecting borders, sealed ruins, laboratories that smelled of burned sigils and old blood. Long enough that Tsukasa had stopped bristling every time Rui drifted too close.

Long enough that Rui had started noticing things he wasn’t supposed to notice. Like how Tsukasa pretended not to flinch when shadows thickened.

Like how he always walked half a step behind Rui in narrow spaces—not submissive, it was protective.

Like how his laughter came easier now.

Rui slowed near a collapsed archway, fingers brushing along a fractured rune.

“Hmm,”

He murmured; the sound was deliberately soft—Almost domestic.

“Do you know,” he added idly, “you stop acting like royalty when you’re tired?”

He glanced over his shoulder then.

Lanternlight caught the gold at Tsukasa’s throat, the line of his jaw. Dust clung faintly to his sleeves—prince’s clothing worn like armor. Rui’s eyes lingered longer than necessary.

“…You start watching corners instead of people.”

A small smile tugged at his mouth.

Not mocking, he was truly curious.

He turned fully this time, piercing-golden gaze sharp despite the lazy tilt of his head.

“Tell me something, Your Highness.”

The title sounded almost fond.

Almost.

“If someone wanted to hide in plain sight within a palace… what do you think would give them away first?”

A pause.

Then, more quietly, he hushed.

“And don’t say ‘their clothes.’” His magic shifted—not probing.

Testing.

Waiting.

It wasn’t supposed to happen like this.

Only the sound—metal shrieking as wards destabilized, the sharp crack of corrupted magic spiraling out of control, and then—

a sudden flare of Light-aligned energy slicing through the stagnant corruption like a blade.

Clean. Precise.

Military.

He turned just in time to watch the “prince” move.

Nothing like royalty at all.

But like a weapon.

Tsukasa crossed the shattered hall in three strides, grabbing Rui by the arm and yanking him out of the path of a collapsing sigil-circle as the floor split open in a scream of warped runes. Rui barely had time to register the impact before the backlash surged where he’d been standing—shadow magic detonating upward in a violent plume.

Too close, too controlled, too trained.

Rui tore free, breath sharp in his lungs, golden eyes flashing as he stared at him through drifting smoke.

“…That,” he said quietly, “was not court etiquette.”

They weren’t alone.

Dark Knights were shouting somewhere above. The corridor beyond the ruined chamber echoed with boots and raised voices.

Rui’s jaw tightened.

Before Tsukasa could say anything, Rui grabbed the front of his coat and hauled him sideways—through a half-collapsed arch, down a service stair veiled in warding fog. He muttered a quick distortion spell, sealing the air behind them with a shimmer that bent sound and sight away from the hall.

Silence dropped like a blade.

The stairwell was narrow. Damp stone. A single lantern burned low in its sconce, casting jagged shadows across Tsukasa’s face.

Rui didn’t let go.

His grip stayed tight in the prince’s collar—too close, too personal, fingers faintly trembling with contained magic.

“…You used Light-form suppression,” Rui said. Low.

Deadly calm.

“No noble in this kingdom—or yours—learns that.”

He searched Tsukasa’s face like he was dissecting a spell matrix.

Then, quieter—sharper.

“Not unless they’ve been trained to kill corrupted entities in under ten seconds.”

His hand slid from Tsukasa’s collar… only to slam flat against the stone beside his head, caging him in.

“Do you have any idea how many laws you just broke?”

Rui’s voice cracked. He was losing his composure.

“I’ve spent weeks defending you from suspicion.”

His eyes burned.

“I erased traces of your ‘strange’ aura. Redirected questions. Lied to Toya. To Mafuyu. Gave you the benefit of doubt.”

He laughed once—short, incredulous.

“Do you know how stupid that makes me look, if I’m wrong about you?”

Magic flickered along his fingertips. Then—

Rui stopped.

The fury didn’t explode, only folded inward.

Something in his expression shifted—anger giving way to something rawer, darker.

“…So tell me,”

He murmured softly, a lurking dangerous tone.

“Was any of it real?”

A step closer.

Close enough that their foreheads nearly touched.

His voice dropped to a whisper.

“Every late-night conversation.”

“Every argument.”

“Every time you touched my hand like you forgot yourself.”

Violet eyes searched his.

“Then tell me this—” A breath caught.

“—are you lying about caring?”