The training room on the third underground level remained silent.
The heavy alloy door was tightly shut.
The frame sealed perfectly.
Not a trace of outside air entered.
The ceiling was high.
Rows of long strip lights were arranged in order.
White light fell vertically.
Stable.
No flicker.
No shifting shadows.
The center of the room was brightly lit.
The floor was a single piece of gray composite material.
Flat.
Seamless.
Without cracks.
Like a massive solid plate.
The air was steady.
Almost no flow could be felt.
Even dust was scarce.
The entire space was as clean as a laboratory.
Several ballpoint pens lay scattered on the ground.
Blue casing.
Black casing.
And one transparent one.
Its ink core visible inside.
They had just rolled off the table.
Now completely still.
No longer moving.
Seven stood at one side of the training field.
His body straight.
Feet firmly planted.
Shoulders relaxed.
But fully alert.
He did not step into the center.
Only remained at the edge.
His gaze forward.
The Supervisor stood at the center of the room.
More than ten meters separated them.
Not far.
But enough to form a standoff.
The air was quiet.
A few seconds passed.
No one moved.
Seven slowly raised his hand.
Not fast.
Not slow.
As if aligning with a certain rhythm.
His fingers tightened slightly.
Ability activated.
Fourth-stage ability.
Barrier.
No light.
No sound.
No surge of energy.
Only space changed in an instant.
Centered on Seven,
a radius of several meters became abnormally stable.
The subtle flow of air was flattened.
As if wiped by an invisible hand.
Spatial structure was fixed.
The relationship between ground and air was locked anew.
An unseen framework spread across the area.
No boundary lines.
No color.
Yet clearly different.
As if that space had been redefined.
Seven stood at the center.
His body motionless.
Breathing slowed.
His focus locked entirely onto the barrier structure.
The Supervisor watched.
His expression did not change.
His gaze lingered briefly.
"Barrier."
He spoke.
Tone calm.
Like confirming a fact.
Seven did not respond.
The barrier structure was still being fine-tuned.
Every spatial node stabilizing.
Any slight looseness
would affect the whole.
The Supervisor raised his hand.
Ability activated.
Gravity Control.
Gravity at the center of the room began to increase.
No sound in the air.
But weight was changing.
The ground seemed to grow heavier.
Air pressed downward.
Several pens trembled slightly.
Then slowly slid.
As if dragged by an unseen force.
But when gravity reached the edge of the barrier—
It stopped.
Like colliding with a structure.
Inside the barrier remained stable.
Seven was unaffected.
The Supervisor did not increase pressure further.
He stepped forward.
Entering his own gravity field.
His ability enveloped him.
The next moment—
Another change appeared.
The direction of gravity around his body shifted.
Anti-gravity.
His weight was offset.
His steps became extremely light.
Almost floating.
Yet his feet still touched the ground.
He continued forward.
Reached the edge of the barrier.
Stopped.
He extended his hand.
His palm approached the unseen structure slowly.
No disturbance in the air.
No sound.
His hand touched the barrier.
Instantly—
Two forces met.
External gravity.
Internal spatial fixation.
His fingers applied slight force.
Gravity concentrated at his palm.
At the same time,
anti-gravity offset most of the pressure.
His motion resembled touching,
not attacking.
Like sensing structure.
Seconds passed.
No sound.
Seven stood at the center.
A bead of sweat appeared on his forehead.
Maintaining the barrier was not easy.
The spatial structure required constant control.
The Supervisor slowly withdrew his hand.
His gaze lingered on the contact point.
"Structure stable."
He said.
Tone like recording data.
Seven did not respond.
The Supervisor changed position.
Extended his hand again.
Same method.
Touch.
Gravity focus.
Anti-gravity offset.
He tested multiple points.
Precise movements.
No excess force.
Like inspecting material.
Minutes passed.
The Supervisor finally stopped.
His gaze slowly lowered.
Fell onto the ground.
There—
several pens.
He bent down.
Picked one up.
Blue casing.
Transparent tip.
A light flick of his finger.
The pen shot forward.
The tip struck the barrier in a straight line.
No sound.
At the moment of contact—
The pen shattered.
Plastic casing.
Ink core.
All reduced to fine powder.
The powder scattered.
Fell onto the barrier surface.
Then slid to the ground.
The Supervisor watched that spot.
Seconds passed.
No movement.
Then he bent again.
Picked another pen.
Flicked it.
Same position.
Same trajectory.
Shattered again.
Powder fell.
Third.
Fourth.
Pens kept flying.
Each impact landed almost exactly at the same point.
Powder slowly accumulated.
Seven's brows tightened slightly.
He sensed something wrong.
The Supervisor was not attacking.
Only repeating.
Like testing.
Fifth pen.
Shattered again.
More powder gathered.
A faint plastic scent appeared in the air.
The Supervisor's gaze never left that point.
As if waiting.
Seconds later—
He stopped.
His eyes locked onto the barrier surface.
"Here."
He said.
Next instant—
Ability activated again.
Gravity no longer spread.
It compressed.
Condensed.
Into a single point.
The exact spot the pens had struck.
The air suddenly grew heavy.
Gravity collapsed inward.
The force dropped instantly.
A light sound—
Crack.
A thin fracture appeared on the barrier surface.
Like a line on glass.
Seven's pupils contracted.
He immediately reinforced the structure.
Trying to repair.
But he was a moment too late.
Gravity pressed down again.
The crack expanded rapidly.
Next second—
Bang.
A hole punched through the barrier.
Fractures spread outward.
The compressed gravity surged through the opening.
The air collapsed violently.
Seven's body was slammed to the ground.
Thud.
A dull impact.
His vision went black instantly.
Consciousness cut off.
Seven collapsed.
The barrier shattered at the same time.
Air flow returned.
Powder on the ground stirred lightly.
The training room fell silent again.
The Supervisor stood where he was.
Looking at Seven on the ground.
A few seconds passed.
Then he walked over.
Crouched down.
Placed fingers at Seven's neck.
Pulse steady.
Only unconscious.
The Supervisor remained silent for a moment.
His gaze shifted again.
To the ground.
That small pile of powdered pens.
"Structural weakness."
He said.
The training room returned to silence.