The steel ceiling of Tartarus groaned, buckling inward under immense explosive force.
BOOM!
A massive chunk of reinforced concrete crashed into the center of the cavern, clearing a path from the upper levels. Through the settling dust and debris, a squad dropped perfectly into the abyss.
Five figures. Silver armor gleaming proudly in the dim, blood-red emergency light.
The Vanguard.
Level 28 Elite Strikers of the Silver-Blood Guild. These were veterans who cleared A-Rank dungeons for breakfast.
The Vanguard Leader landed without a sound, his heavy broadsword already drawn.
"Formation," he ordered. His voice was clipped. Professional. "Shields up. Casters in center."
They shifted instantly into a flawless defensive diamond, covering every blind spot.
"Sir," the scout whispered, checking the readouts on his wrist-scanner. "The neurotoxin… it's gone. Completely neutralized."
The Leader's eyes narrowed. The purge gas was designed to linger for days. If it was gone, something had actively consumed it.
"Stay sharp," he commanded, his grip tightening on his sword. "Assume a high-tier poison attribute Awakener. Do not break formation."
They were cautious. They were highly trained. They had entered a prison to suppress a riot.
They had no idea they had just walked into an extinction event.
The dust finally settled. And then, they noticed it.
The fog.
It wasn't the yellow neurotoxin. It was a thick, dark-green mist that clung to the floor.
It didn't drift with the air currents. It reached.
Like skeletal fingers, the green fog curled around the heavy boots of the shield-bearer.
Hsssss.
"What the—" The shield-bearer looked down. His reinforced silver plating was aggressively bubbling, melting into slag in mere seconds.
"Corrosive mist! Fall back!" the Leader barked.
But the fog parted.
Thirty meters away stood a figure cloaked in absolute, light-devouring black. He had no weapon drawn. He emitted no aura.
Arthur Pendelton simply stood with his hands in his pockets, watching them with the cold, detached gaze of a scientist observing rats in a maze.
"Target sighted!" the scout yelled, raising his weapon.
"Hold!" the Leader roared. His veteran instincts screamed at him to stop. The man emitted zero mana, yet the air around him felt impossibly, suffocatingly heavy.
But it wasn't the man in the coat that made the Leader's blood freeze.
It was the shadow looming behind him.
Over four meters tall. A horrific, unholy fusion of gray regenerating muscle, rotting emerald scales, and a massive right arm forged of pitch-black, toxic-pulsing bone.
[The Grave Tyrant]
The beast didn't roar. It didn't posture. It just looked at them.
One yellow eye, full of cold intelligence. One emerald sun, burning with ancient draconic hatred.
"What is that?" the mage whispered from the center of the formation, his hands trembling violently. "That's not a summon... It's a Boss..."
"FIRE EVERYTHING!" the Leader roared. Pure terror overrode his years of disciplined training.
Spells erupted. Fireballs, lightning spears, and armor-piercing arrows rained down. It was a concentrated barrage that could level a city block.
Arthur didn't blink. He didn't move.
The Grave Tyrant moved.
Not fast. Not a blur.
One moment it was standing beside Arthur. The next... it was simply gone.
The massive barrage of spells hit empty air, obliterating the cavern wall behind where the beast had just been.
The Leader's eyes widened in sheer panic. "Where—"
A shadow fell over the scout on the right flank. The scout slowly looked up.
The Grave Tyrant stood directly above him.
Silence stretched. For a split second... the scout realized it wasn't speed. It was displacement.
Then.
CRUNCH.
The scout's upper body ceased to exist. He was crushed directly into the floor under the sheer, overwhelming brute strength of the Troll King's genetics.
"NO!" the shield-bearer roared, swinging his massive enchanted hammer with all his might at the beast's exposed ribcage.
CRACK!
A direct hit. Rotting scales shattered. Thick ribs cracked loudly.
"I HIT IT! I—"
The cheer died in his throat.
The ribs violently snapped back into place. The scales knitted together instantly, completely closing the wound before the echo of the hammer even faded.
The Grave Tyrant slowly tilted its head. The pitch-black bone arm moved.
Slash.
It was silent. Perfect.
The shield-bearer looked down in confusion. His impenetrable shield, his heavy armor, and his torso... had been cleanly bisected.
He fell into two halves, his internal organs melting instantly from the lethal corrosion dripping from the bone blade.
"Run..." the mage sobbed, his mind completely broken by the impossible reality of the slaughter. "It's a calamity! RUN!"
The remaining two elites broke formation. They abandoned their pride, their grueling training, and their Guild. They turned and sprinted toward the hole in the ceiling, desperate to escape the nightmare.
Arthur, still standing calmly thirty meters away, didn't raise his voice. He didn't need to.
"Burn."
The Grave Tyrant opened its massive jaws. The emerald eye flared with apocalyptic light.
A concentrated beam of dark-green plague erupted. It swept across the cavern like a laser, instantly catching the fleeing mage and archer in the back.
They didn't scream.
Their flesh, bone, and silver armor evaporated into green ash.
Silence slammed back into the cavern.
Ten seconds. Four Level 28 Elites. Erased.
Only the Vanguard Leader remained. He was on his knees, his broadsword dropped and forgotten on the melting floor. He was hyperventilating, staring in wide-eyed horror at the bubbling sludge that used to be his elite squad.
Heavy, earth-shaking footsteps approached him.
The beast stopped. Toxic fog curled intimately around the Leader's neck, burning his skin. He squeezed his eyes shut, waiting for the end.
But the end didn't come.
Instead... a suffocating, unnatural pressure pushed upward through the soles of Arthur's boots.
It wasn't a pulse from below.
It was the absolute, terrifying absence of one.
Like something resting beneath them on Level 3... did not beat. Did not breathe. Yet existed.
The Grave Tyrant froze.
The emerald dragon-fire in its left eye dimmed. Not in defiance. Not in anger. It dimmed in pure, unadulterated instinct.
The Legendary predator had just recognized something sitting far above it in the cosmic food chain.
The massive beast shuddered. It slowly raised its black-bone blade, completely ignoring the kneeling Leader, and aimed it down toward the solid floor. Toward the abyss.
Arthur's pitch-black eyes narrowed sharply.
It's overriding my control, Arthur realized, his Mental Energy flaring violently as he forced his absolute authority down onto the terrified summon.
"Stop," Arthur commanded, his voice quiet but laced with terrifying, crushing gravity.
The Grave Tyrant violently spasmed. The bone blade stopped inches from the floor. It pulled back, returning to a rigid, obedient stance, though it refused to lower its gaze from the ground.
Arthur walked slowly across the ruined cavern, hiding the immense mental strain behind a mask of cold indifference. He stopped in front of the kneeling, broken veteran.
He looked down. Empty. Detached.
"Tell Marcus," Arthur said softly.
The Leader looked up, tears of pure terror tracking through the dirt and soot on his face.
"This was a warning," Arthur whispered, his dark eyes glowing faintly under his hood.
A pause.
"Next time... there won't be anyone left to remember you were here."
Arthur turned and walked toward the exit. Behind him, the massive, nightmare-forged Grave Tyrant turned and followed obediently, though it kept a wide, nervous berth from the center of the floor.
The Vanguard Leader remained on his knees, trembling in the fading fog.
The prison stayed silent.
They had come to clean up a mess.
Instead, they had delivered a message to a god of death.
And far below them, in the absolute, breathless emptiness of Level 3... the silence seemed to agree.