The Ancient Existence, the being of shadow and regal darkness, lowered his tremendous form toward the desolate, scarred earth of the ancient battlefield.

His six blade-like wings of pure dark energy were ready to fold, prepared to make contact with the continent that had served as the lock of his prison for millions of years.

But a whisper, cold and alien, touched his ancient consciousness.

[Unauthorized Lifeform Detected. Energy Signature Exceeds Grade 12 Threshold. Termination Protocol Initiated.]

He halted. His descent reversed instantly, and the air beneath his obsidian boots ignited with frantic counter-energy. The regal demeanor remained, but his violet eyes narrowed into lethal slits.

"The System," he murmured. The low, resonant growl shook the dormant rock formations below. "It is not a seal, but a will. A remnant of the Grand Laws placed by the architects of the Prime Worlds.

It forbids the direct entry of high-tier existences into these lower region of this realm of infinity."

After saying that, he couldn't help but smirk with disdain.

He again entered the fold of the space to save his life.

He knew exactly where this system was originated from.

But knowing something didn't mean he could handle it. He was still an ant infront of the system.

He scoffed without humor. The System was cold and indifferent, incapable of malice, yet utterly effective to do it's duty.

If he touched the ground, the full, crushing force of the governing laws would strike, not to seal him this time, but to violently erase him from existence. Even in his weakened state, he was too dangerous for this fragile domain.

He needed an anchor. He needed a conduit.

"The soul-body merge," the Ancient demon thought in his mind, a predatory smile forming across his inhumanly handsome face. "A delicate process, but a necessary one for my survival. I must lure a foolish, ambitious person here. Someone whose mind is strong enough to survive my consciousness, but weak enough to be dominated by it."

Simply possessing a body would trigger the System through an immediate power spike.

But if someone allowed him to merge his conciousness with the body, that would hide his energy signature beneath the host's native aura long enough for him to fully integrate and dismantle the System from within.

Luring prey had once been beneath him during the Primordial Age. Now, in this impoverished time, it was a necessary game. And he was patient enough to do that.

He raised his slender hand. His pale skin pulsed, and the four ethereal horns above his head glowed with stored power. He did not draw on the atmosphere's residual energy.

Instead, he tapped into the deep well of Dark Primordial power he had preserved during his long imprisonment.

With a silent command, an ancient and terrifying energy surged outward. It was the power of creation and destruction, far beyond anything that the native civilization or any civilization in this domain could understand.

Boom.

The continent shuddered as if struck by a massive meteorite. Ground spilled opened. Dust, soil, and bedrock lifted into the sky, forming a swirling vortex centered on the Ancient Demon Lord's will.

From the chaos, a colossal structure began to form. It did not rise, but grew, shaped by dark power and the earth itself. Within seconds, it became solid.

A fortress of pitch-black stone. Majestic, gothic, impossibly grand. Every carved detail seemed to writhe with silent suffering of people. It towered across the horizon, a hundred floors high, flawless and saturated with a faint aura of ancient power.

It looked like the lost castle of an ancient supreme race.

The Ancient demon observed his creation with satisfaction. It pulsed with his energy, a beacon that would draw the ambitious and the greedy people toward him without him doing anything.

He even added different trial all over the castle to make it more fun.

He lifted his hand again. Upon the smooth, dark surface of the gate, two glowing runic lines appeared. Simple, ancient, and utterly deceptive.

"The Sanctum of the Seraphim."

"The Castle of the Angel Race."

He smiled with a cold and calculated look on his face.Angels and Demons were eternal rivals, but to the natives of this low-tier domain, "Angel" meant divine power. The trap was simple and perfect.

Inside the hundred floors, the Ancient demon wove his trials. They were not meant to kill, but to measure ambition, greed, and the potential talent lying within someone. He filled the floors with illusory treasures, puzzles, and challenges that will reward the quick thinkers and ruthless ones.

The reward on the 100th floor would be the most tempting of all: a vessel of unimaginable power, crafted to be the perfect disguise for his own descent.

His preparations complete, he folded his wings and waited high above the land like a predator watching a newly built maze.

Far to the east, near the defensive perimeter of the Earth Empire, a shimmering silver tear appeared in the air.

A poorly executed teleportation portal opened, revealing a young man clutching a worn map. Kael, a minor beast tamer from a minor native power.

"Haha, those powerful factions are just dumb," he hissed, brushing off his shabby armor. "Why would they try to attack this place? This empire is built on the ancient battlefield. There must be countless treasures left behind."

He grinned. "Thank you, ancestor, for the map."

He owned a map which suggested that in this region were located the ancient battlefield of tow supreme races.

That battle occured eons ago, but it was also a supreme battle that destroyed all the natives from that time living in this domain.

Now he had this map on him and he wanted to findout all the treasures.

With citizens staying home during the official protection period, patrols were thin. Kael planned to sneak in and grab a few pills or cultivation scrolls or something.

He vanished into the wasteland, unaware that he was running toward something far more dangerous.

Five minutes later, another portal opened. This one was clean and precise. An elven woman stepped out, graceful and sharp-eyed. Elara, a skilled thief from a powerful but neutral elven clan, tracked Kael's presence with ease.

"Kael is a fool," she muttered. "He'll go straight for the supply depots. I need something unique, something that can lift my clan."

A distant ripple of ancient power brushed against her senses. Her heart skipped.

"What is that?" she whispered in a shaky tone. The energy felt sacred and impossibly old. Without hesitation, she shot west like a streak of green light.

She was not the only one. Over the next hour, more opportunists and scavengers slipped past the weakened perimeter.

Kael arrived first.

He froze when he saw the structure towering across the land. His jaw dropped to the ground.

The Castle of the Angel Race.

It glowed under the twilight sky, its black surface reflecting light like a living shadow. A vast aura of power radiated from it, almost painful to endure.

"This… this is a Sanctuary of the Seraphim?" Kael whispered, dropping his map. "The legends were true."

The inscription on the gate sealed his belief. Moments later, Elara arrived. She was also shocked and speechless. Others soon followed, drawn by the overwhelming energy.

Ambition smothered caution. They saw not danger, but opportunity.

Kael sprinted in first and tackled the first floor's trial, a maze of light illusions requiring precise mana control. He barely passed, earning a rare energy herb. Elara cleared the second trial and received a fragment of ancient armor.

The rewards were real.Truly priceless.

But they didn't want to take everything for them. They wanted their clans to also rise.

Within a day, the first wave retreated with treasures in hand, spreading the rumor across the continent.

A hundred-floor castle. Angelic in origin. Filled with divine relics.

The Ancient demon waited.

Meanwhile, everyone in the Earth Empire focused on internal growth. They were comprehending laws in different places.

Noah sat cross-legged on bedrock, eyes were closed, wrapped in a complex energy field.

A porcelain bottle sat beside Noah. He opened it, took a shimmering Enlightenment Pill, and swallowed it casually. Each pill cost quadrillions and increased Law Comprehension tenfold.

Progress was slow but steady. He looked at his panel to know his progress.

"0.5 percent comprehension. Still a long way to go."

He grabbed the next pill.

Before he could take it, his mental link with a scouting drone in his territory of the earth empire flashed with a red alert.A hundred-floor black castle appeared there with Angelic runes. Natives were coming here grouop after group.

Noah's eyes snapped open. His calm demeanour vanished, replaced by fury. He crushed the pill in his grip, letting the dust fall.

"Damn it! Why would something like that appear here? An ancient Castle of the Angel race? On my doorstep?"

He knew it was no coincidence. Whatever this thing was, it posed a direct threat to the Empire.

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