No one knew when it began.
There were no warning sirens.
No divine voice.
No prophecy.
Only cracks.
They appeared in the sky first—thin fractures like shattered glass spreading across reality itself. Then the earth followed. Buildings trembled. Oceans stilled.
And then the Dungeons opened.
Massive gates of shifting light manifested across cities, deserts, oceans, mountains. Some were small—barely the size of a doorway. Others towered over skylines like ancient cathedrals carved from void.
When the first gate was breached, the world learned a new word.
Monster.
But the second word changed everything.
System.
Windows of translucent blue light began appearing before certain individuals.
[You have been chosen.]
[Initializing System Interface…]
[Class have been assigned.]
Civilians were granted abilities beyond human limits.
Strength that bent steel.
Agility that defied gravity.
Magic that burned hotter than artillery fire.
They were called System Users.
And the ones who entered the dungeons to fight back?
They were called—
Heroes.
At first, it felt like salvation.
Heroes cleared dungeons.
Monsters were hunted.
Rare materials were sold.
Corporations formed. Guilds rose.
The world adapted.
Those without abilities continued their lives behind reinforced cities and protected districts. Those with powers became celebrities, mercenaries, guardians of humanity.
Peace returned.
Or at least, something close to it.
Then the dungeons changed.
Without warning, cleared gates reactivated.
Lower-ranked dungeons began producing monsters far stronger than recorded data. Creatures developed intelligence. Some even began using skills.
Reports flooded in:
[Dungeon Difficulty Escalation Detected.]
[Unidentified Mutation in Mana Flow.]
[Boss-Class Emergence Outside Dungeon Boundaries.]
Veteran heroes entered familiar gates—
and never returned.
The new dungeons were different.
The old ones felt like training manuals compared to what emerged next.
Entire hero teams were erased.
Cities were overrun overnight.
And for the first time—
The System issued a warning.
[Global Threat Level Increasing.]
[Survival Probability: Declining.]
The governments of the world had no choice.
They formed a unified authority.
The Hero Association.
An organization designed to regulate system users, monitor dungeon activity, and classify both heroes and gates into ranks:
E – D – C – B – A – S – SS
Heroes were evaluated.
Dungeons were measured.
Clearance permissions were enforced.
On paper, it was order.
In reality—
It was desperation.
As dungeon difficulty surged, fear spread among the ranks.
Some heroes continued fighting.
Others… didn't.
Why risk death in unstable gates when abilities alone were enough to dominate civilians?
A man who could bend bullets didn't need a dungeon to make money.
A woman who could control minds didn't need fame to build an empire.
System users began abandoning the battlefield.
They turned their abilities inward.
Crime syndicates formed.
Awakened mercenaries became warlords.
Rogue users carved territories out of cities.
The media stopped calling them heroes.
They called them—
Awakened Criminals.
Civilians lived in fear.
Police forces were useless.
Armies struggled.
Against someone with an A-rank combat skill, modern weapons meant nothing.
A single rogue user could wipe out a district before suppression units even mobilized.
The balance had shattered.
And the System remained silent.
Within the headquarters of the Hero Association, beneath layers of reinforced mana-barriers and armed security, one decision changed the course of history.
The Chairman—an S-rank veteran who had survived the first dungeon outbreak—activated a classified protocol.
[Initiating Special Operations Division.]
[Authorization: Absolute.]
[Target Classification: Rogue System Users.]
He selected twelve names.
Twelve heroes.
Individuals capable of hunting their own kind.
Their mission was simple:
Eliminate awakened criminals.
Suppress illegal guilds.
Restore balance.
No spotlight.
No sponsorships.
No public praise.
Only blood and silence.
The Association gave them a name that would never appear in press releases.
The System Hunters.
Across the world, rogue users began disappearing.
Criminal organizations collapsed overnight.
S-rank fugitives were found dead in locked penthouses.
Some said it was an internal purge.
Others believed the System itself had chosen executioners.
But in the darkest corners of the awakened underworld, a single truth spread like wildfire—
If you misused your power…
They would come.
And when they did—
There would be no dungeon to save you.
This was no longer the age of heroes.
This was the age of hunters.