Adrian stepped onto the forbidden fifth floor.
The moment his foot crossed the threshold, he felt it—the air was different. Heavier. Denser. The mist here wasn't scattered like in the lower levels; it flowed with structure, as if guided by an unseen system.
He moved forward slowly, each step measured.
The corridor stretched ahead in cold silence. White metallic walls reflected the dim overhead lights, giving the entire place a sterile, lifeless atmosphere. Rows of reinforced doors lined both sides—each identical, each sealed.
Adrian approached the nearest one.
As his fingers brushed its surface, a faint interface flickered to life.
A digital lock.
Password protected.
"…So it's not just physical security."
He narrowed his eyes and focused, channeling a thin stream of mist toward the control panel. The green energy spread across the surface, attempting to interfere with the system—probing, searching for a weakness.
For a moment, nothing happened.
Then—
A faint resistance.
The mist scattered.
Adrian pulled his hand back slightly.
"…It didn't work."
He tried again, this time increasing the density, refining the flow, forcing it into the lock mechanism.
But the result was the same.
The system didn't react.
It didn't break.
It didn't even acknowledge him.
Adrian exhaled slowly.
"These doors… they're not ordinary."
His gaze shifted along the corridor, scanning the identical entrances.
"If one is like this… then all of them are."
Which meant one thing—
Whatever was inside these rooms was being protected at a level far beyond normal security.
Suddenly—
Footsteps.
Adrian's body tensed instantly.
More than one person.
Approaching.
Without hesitation, he suppressed his presence and moved back into the shadow between two doors. The mist around his body thinned, bending light just enough to blur his outline.
He became still.
Silent.
Hidden.
Moments later, a group of people walked into view.
White coats.
Badges.
Doctors… and scientists.
Their conversation was casual, unaware of the presence just a few meters away.
"…The readings have been unstable since morning."
"Did you report it?"
"I did, but they said to continue the experiment."
They stopped in front of one of the secured doors.
One of them stepped forward and placed his hand against the panel.
The system activated instantly.
Access granted.
The door slid open with a low mechanical sound.
Adrian's eyes sharpened.
Opportunity.
He waited—
One second.
Two.
Then, just as the last person stepped inside—
He moved.
Fast.
Silent.
Slipping through the narrowing gap before the door could fully close.
The moment he crossed the threshold—
BEEP—! BEEP—! BEEP—!
A sharp, piercing alarm exploded through the entire floor.
Red lights flashed violently across the corridor.
Adrian's heart dropped.
"…What—?"
The atmosphere changed instantly.
Calm turned into chaos.
Inside the room, staff members froze for a split second before panic spread across their faces. Scientists rushed toward control panels, monitors lighting up one after another.
"What's going on?!"
"Why is the alarm triggered?!"
A man in a lab coat turned sharply, his voice rising above the noise.
"Doctor John! Why are the alarms ringing? I didn't receive any breach report!"
Doctor John, standing near the central console, stared at the screen in confusion.
"…That's impossible."
His fingers moved rapidly across the interface.
"No door breach detected… no system failure…"
His expression darkened.
"Then what triggered it?"
Meanwhile—
Adrian stood completely still.
Hidden.
Watching.
Listening.
His mind raced.
"I didn't touch anything… I only entered…"
Then realization struck.
"…Detection system. Powerful enough to identify me."
Not based on doors.
Not based on locks.
But presence.
Something in this room could detect what normal eyes couldn't.
Slowly—
Very slowly—
Adrian lifted his gaze.
The mist in the air here… was different.
Structured.
Connected.
Alive in a way he hadn't felt before.
And now—
It was reacting.
***