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Isekai Overseer: Reign of the Behemoth

Chapter 15 / 61

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Chapter 15 of 61

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Chapter 15: The Imperial Census

Isekai Overseer: Reign of the Behemoth

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The shadow fell over the Bone-Pass three hours after sunrise—not from a storm cloud, but from a vessel that defied gravity itself.

High above the craggy peaks, the Radian Vanguard, a three-hundred-foot Imperial War-Frigate of the Grand Duchy, glided through the mountain air without making a sound.

Its hull was forged from pristine, silver-white arcanite plate, glistening beneath the morning sun like polished glass.Full novel: Isekai Overseer: Reign of the Behemoth — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠

Four massive, glowing blue levitation matrices rotated beneath its keel, humming with a soft, harmonic frequency that vibrated straight through the stone battlements of The Bone-Grave.

Atop the Nerve-Scribe Tower, Valen stood beside Lyra, Karen, and Marcus.

The silence between them was heavy.

[TARGET ANALYZED: IMPERIAL WAR-FRIGATE ‘RADIAN VANGUARD’]

[Classification: Tier 5 Heavy Arcanite Cruiser]

[Hull Integrity: 18,500 / 18,500]

[Defensive Shielding: Anti-Matter Mana-Barrier (Absorbs 90% Physical / Bio-Thermal Damage)]

[Primary Battery: Dual Sun-Fire Aether Cannons]

Karen stared up at the sky, her brass-framed goggles slipping slightly down her nose.

Her knuckles turned white as she gripped the stone parapet.

“Look at those levitation mounts,” she whispered, her voice stripped of its usual bravado.

“No marrow line.

No heat exhaust.

No pressure valves.

It’s…

it’s pure, continuous mana-induction.

We’re running raw grease and bone-piston engines, Valen.

If that thing fired its primary battery once, it would turn Layer Two into molten slag.”

Beside her, Lyra held her temple, her breath catching as the Nerve-Scribe Crown processed the frigate’s energy signature.

“Their defensive barrier…” Lyra murmured, her eyes wide with quiet awe.

“It’s radiating a localized mana-field so dense my spatial sensors can’t even penetrate the outer hull.

It feels like looking at a mountain made of solid glass.”

Valen kept his expression unreadable, though his jaw tightened.

His purple System vision scanned the vessel, noting every glowing rune and polished steel plate.

For weeks, he had felt like a god—rebuilding a fortress, subjugating a three-thousand-man invasion force, and converting an Eldritch Titan’s marrow into raw power.

But looking at the floating leviathan above, the truth was stark and undeniable.

The Bone-Grave was a dangerous, bloody rat’s nest compared to the sheer, effortless industrial might of the Grand Duchy.

He had defeated a regional warlord, but the Empire was a world-spanning war machine.

“Marcus,” Valen said quietly, his voice cutting through the tension.

“Order the Bone-Shatter Vanguard to lower their weapons.

Clear the main courtyard.

We receive them under a flag of statecraft, not war.”

An hour later, the Radian Vanguard hovered twenty feet above the flat stone landing expanse outside the bone-arch gate, extending four massive hydraulic gangplanks down to the dirt.

A contingent of twenty Imperial Knights stepped down in formation.

Their gilded, full-plate armor showed no scratches, no rust, and no blood.

Each man carried a tower shield etched with the black-and-gold dragon crest of Duke Drake, their longswords humming with high-tier physical enchantments.

At their center walked Lady Vespera Drake, Valen’s half-sister and an official Inspector-General of the Imperial Court.

She wore a tailored velvet coat over a silver breastplate, her sharp amber eyes sweeping over the pale bone-walls and the glowing blue marrow-conduits with cold, analytical curiosity.

Beside her walked an elder court scribe wearing silk robes, carrying an ancient leather ledger and a brass measuring rod.

Valen stood waiting at the center of the courtyard, flanked by Lyra in her sleek, blue-glowing bio-harness and Karen in her leather utility coat.

She looked at Valen, her gaze lingering on the faint silver scars visible at his collar and the sharp, unnatural purple glint in his eyes.

“Brother,” Vespera said, her tone smooth, cultured, and devoid of warmth.

“Or should I say, Regional Sovereign?

The rumors in the capital said you were eating rats in a ditch.

Imagine my surprise when the Imperial Census Office reported that House Vane’s border taxes suddenly ceased because their entire army vanished into these mountains.”

“Vespera,” Valen replied neutrally, stepping forward.

“Welcome to The Bone-Grave.

I assume the Duke didn’t send an arcanite frigate just to check on my health.”

“The Duke doesn’t care if you live or rot, Valen,” Vespera said plainly, waving her gloved hand toward the court scribe beside her.

“The Grand Duchy cares about order and revenue.

Lord Hector Vane was a registered vassal who paid forty thousand gold sovereigns a year in border tariffs.

You killed him, annexed his mines, and disrupted the regional trade route.

Under Imperial Law, that makes you either a rebel to be purged…

or a newly established Marcher Lord who owes the Crown an accounting.”

She gestured toward the sprawling bio-mechanical structures built into the Titan’s ribs behind him.

“Show me your city, Valen,” Vespera commanded softly.

“Let us see if your little bone-kingdom is worth recognizing, or if I should order the Radian to glass this valley.”

The tour through Layer Three was a masterclass in silent political theater.

Vespera walked past the newly constructed Marrow-Forge Refinery, her eyes narrowing as she observed hundreds of penal workers in grey tunics moving in absolute, eerie unison.

There were no overseers shouting orders, no whips, and no bloody guards.

Instead, the workers moved with mechanical precision, guided solely by the glowing violet rings of the Penal Restraint Matrix fused into their spines.

“No magic-weavers,” the elder court scribe muttered, scribbling furiously in his ledger with a trembling quill.

“No incantations…

no mana-crystals…

They are refining raw Titan-ichor at ninety-eight percent purity using purely mechanical pressure and bio-conduits.

It’s…

impossible.”

“It’s not magic,” Karen said, stepping forward with her arms crossed, unable to resist a bit of pride despite her earlier awe.

“It’s marrow-technology.

We tap the Titan’s natural heat and run it through pneumatic pistons.

Zero mana consumption, three times the output of an ordinary alchemy forge.”

Vespera stopped in front of a line of penal workers hauling massive slabs of refined Titan-steel.

She reached out, her gloved finger brushing against the glowing blue conduit feeding the refinery floor.

“Terrifying,” Vespera murmured, turning her sharp gaze to Valen.

“You’ve built a bio-mechanical hive, Valen.

No wage costs, no desertion, no fatigue.

If the High Council in the capital saw this…

they wouldn’t see a disgraced prince.

They would see a disease that needs to be eradicated before it spreads to the lower provinces.”

“They can try,” Valen said coldly, his eyes meeting hers without flinching.

“But as you can see, my refinery produces fifty tons of refined marrow-steel a week.

My defense grid is online, and my penal legion is fully integrated.

If the Duchy wants to destroy this, it will cost you three frigates and ten thousand knights.

Vespera stared at him for a long, heavy moment.

Slowly, the corner of her lip curled into a faint, calculating smile.

“No,” she admitted, turning back toward the exit.

“It isn’t.

The Empire is currently mobilizing three armies against the Eldritch incursions in the Southern Reaches.

The Duke cannot afford a bloody, drawn-out war over a mountain pass.”

An hour later, in the newly established council hall of Layer Two, the formal negotiation concluded.

A thick parchment scroll lay on the cartilage table between them.

The court scribe held a brass wax seal, waiting for Vespera’s nod.

“The terms are set,” Vespera announced, her voice echoing in the hall.

“Under the Gold and Bone Accord, the Grand Duchy formally recognizes The Bone-Grave as an Autonomous Border March, and recognizes you, Valen Drake, as its legitimate Sovereign Overseer.”

She pointed a long, manicured finger at the scroll.

“In exchange, you will pay an annual Imperial Tithe of fifteen thousand barrels of refined marrow-oil and two thousand tons of Titan-steel alloy.

Furthermore, House Vane’s former territories in the Iron-Reach are officially under your administration, provided you keep the mountain trade routes open and free of bandits.”

Valen looked down at the parchment.

It was a steep tax, but it bought him the one resource he needed more than gold or iron: time.

Time to upgrade his settlement to Tier 4, time to refine his bio-grafting trees, and time to build a war machine that could truly stand against the arcanite frigates of the Empire.

Valen reached out, pressing his thumb onto the warm red wax at the bottom of the document, leaving a calcified, System-infused seal.

[DIPLOMATIC AGREEMENT SIGNED: THE GOLD AND BONE ACCORD]

[Settlement Status: Officially Recognized Autonomous March]

[Imperial Invasion Hazard: Reduced by 85%]

[Annual Tithe Requirement: 15,000 Marrow Units / 2,000 Steel]

Vespera stood up, pulling her leather gloves tight over her hands.

“The first tax envoy will arrive in six months, Brother.

Have your barrels ready.

And a word of advice…”

She leaned in slightly, her voice dropping to a low whisper meant for him alone.

“Enjoy your little crown here in the dark.

But do not flatter yourself.

The Duchy let you keep this ditch because you are useful as a buffer against the northern wilds.

If you ever march this bio-monstrosity of an army toward the capital…

my ship won’t be conducting an audit.

It will be dropping sun-fire.”

Valen stood tall, looking down at his sister with cold, unwavering authority.

“Tell our father that the exile he threw into the grave built an empire out of its bones.

Tell him to make sure his arcanite cannons are polished when I finally come home.”

Vespera stared at him, a flicker of genuine apprehension crossing her eyes before she masked it, turning on her heel and marching out of the hall with her gilded guard.

As the heavy hum of the Radian Vanguard’s levitation engines faded into the distance, Lyra stepped up beside Valen, her hand slipping softly into his.

“We were outmatched today,” Lyra whispered, her sapphire eyes looking up at him with deep, fierce resolve.

“Today,” Valen agreed, looking around at his growing city, his purple System energy flaring brightly in the dim light.

“Karen, double the shift schedules on the Marrow-Forge.

Marcus, begin drafting the penal legion into permanent garrison squads.

We have six months to build a force that can knock that ship out of the sky.”

Full novel: Isekai Overseer: Reign of the Behemoth — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠
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