Friday's weather was no different from the previous days.
The sky was uniformly gray—no layers of clouds, no boundary of sunlight.
Like a screen with its brightness turned down.
When the first bell rang, the hallway was already quiet.
No running.
No late arrivals.
Even footsteps were lighter than usual.
The classroom door closed before the tail of the bell had fully faded.
The air was sealed inside.
The seat by the window in the back row was empty.
Not because no one sat there.
Because the desk was gone.
The chair remained.
Four legs pressed against the floor.
Standing alone.
The section of the floor beneath it was slightly lighter in color.
As if something had just been moved away.
No one turned to look.
The teacher entered.
His gaze swept across the room.
Paused.
Very briefly.
Then he began roll call.
"X-702."
"Present."
"X-713."
"Present."
When he reached that number—
his finger paused on the screen.
He didn't speak.
The screen skipped.
Continued.
No one looked up.
Chalk touched the board.
Ability Theory — Neural Conduction Model.
The handwriting was steady.
"Ability output is fundamentally limited by the neural system's capacity."
Flat tone.
"Exceeding the threshold will trigger self-protection mechanisms."
Someone wrote down threshold.
Someone added a question mark after it.
Someone crossed it out—then rewrote it.
No one asked about yesterday.
But everyone knew—
that empty space was connected to this sentence.
Seven sat near the middle.
His eyes rested on the board.
He didn't take notes.
He just listened.
To the words.
To the rhythm of breathing.
To the friction of paper.
He could feel a suppressed tension in the classroom.
Not fear.
Not anger.
A conscious restraint.
Like someone had turned the volume knob down by one level.
The bell rang.
No one stood up immediately.
As if confirming the class had truly ended.
Then chairs shifted softly.
The hallway regained sound.
But laughter was brief.
At noon, the cafeteria.
Trays slid across metal surfaces.
The smell of oil mixed with cleaning agents.
The line moved slowly forward.
"At least we get food."
"Sigh… don't want to go back. Just push through."
"Maybe we'll adapt tomorrow."
"Get through the afternoon class, then sleep."
Voices were low.
Like self-comfort.
No one said they wanted to go home.
The day they signed the contract—
everyone had signed the same page.
Minimum conditions.
Seven carried his tray and sat down.
Three people across from him.
They talked about rankings.
About who lasted to which stage yesterday.
About rumors that anyone over fifty would be specially monitored.
No one mentioned the one who disappeared.
Like that desk—
it didn't exist.
The afternoon class was Ability Ethics.
The teacher spoke about control.
"No ability use outside class time."
"Abilities themselves are threat signals."
Some lowered their heads.
Some looked up.
That sentence landed on everyone.
Evening in the dorm.
The lights were too white.
Someone washed their hands for a long time.
Water kept running.
Someone repeatedly checked their wristband.
Someone asked, "What's yours?"
"52."
"49."
Voices were kept low.
Seven lay on his bed.
He closed his eyes.
Curves appeared in his mind.
Not numbers.
Breathing patterns.
Some shaking.
Some irregular.
Some broken.
He remembered the line that stopped at 32.
Not low.
Yet gone.
He felt nothing.
He simply remembered.
Saturday morning.
Ability training.
The sky remained gray.
The training room was behind the main building.
Circular.
The walls weren't walls—
but a full ring of one-way glass.
Inside, a white floor.
A circular mark at the center.
Like an open eye.
Students entered in batches.
Not combat.
Not sparring.
Simulation.
A sensor lit beneath each person's feet.
"Ability Adaptation Simulation."
The voice came from within the walls.
Round One. Environment Simulation.
The lights dimmed.
The ground became a projected ruin.
Smoke.
Broken staircases.
A sense of falling.
Some instinctively stepped back.
There was no physical damage.
But the nervous system was induced.
"Stabilize breathing."
Someone's ability destabilized.
The air vibrated.
Red light.
"Unnecessary ability activation."
Penalty.
Seven stood at the center.
He did not activate his ability.
The environment layered itself in his perception.
The real floor.
The projection.
The emotional field.
He could feel the panic nearby.
Panic triggered ability.
Ability amplified panic.
Someone shouted.
The system isolated them instantly.
White flash.
Reset.
Round Two. Auditory Simulation.
Piercing alarms.
Chaotic voices.
Disrupting neural rhythm.
Some covered their ears.
Wristbands vibrated.
"Stability decreasing."
Seven closed his eyes.
Not avoidance.
Filtering.
Sound was like water.
He let it pass.
Without holding it.
Round Three. Decision Simulation.
A light screen appeared.
Two paths.
High risk, high reward.
Low risk, low reward.
Ten-second countdown.
Students had to choose.
Some hesitated.
Some acted impulsively.
Immediate feedback.
"Impulsive tendency."
"Avoidant tendency."
"Controllable."
Seven chose at the seventh second.
Not the fastest.
Not the slowest.
System marked:
"Stable."
Round Four. Cooperative Simulation.
Groups of three.
Task: prevent a virtual disaster from spreading.
Some tried to lead.
Some waited for orders.
Disagreement formed.
Ability fluctuations.
The system monitored cooperation stability.
Seven didn't argue.
He gave one suggestion.
Low tone.
It was accepted.
Not authority.
No urgency in his voice.
Simulation ended.
Lights restored.
Air quiet.
Sweat on foreheads.
No physical damage.
But fatigue was real.
Observers stood outside the glass.
Seven could feel the gaze.
Not on him—
on the data.
"X-721. Adaptation stable."
Emotionless voice.
He stood at the center.
The sensor beneath his feet lit briefly.
Then dimmed.
He realized something.
They weren't training for combat.
They were testing—
who could remain stable in chaos.
Who would be carried away by emotion.
Who would become a variable.
He walked out.
The hallway was gray-white.
Students discussed scores.
Some excited.
Some disappointed.
No one said they were afraid.
No one said they didn't want to come back.
The system was like air.
Inhaled.
Not discussed.
Afternoon ended.
Dorm lights turned on.
Some reviewed results.
Some recalculated their choices.
Seven sat by his bed.
He didn't check his wristband.
He already knew his score.
Stable.
Qualified.
Sustainable.
He thought of the empty seat.
That person's score—
would no longer update.
He didn't feel sad.
Just confirmed.
Here—
it wasn't the strongest who remained.
It was those who could maintain their values within uncertainty.
A bell rang in the distance.
Weekend ended.
Classes continued.