Rain fell over the campus before dawn.
Not heavy.
Not violent.
But constant.
A thin silver curtain that blurred the windows and softened the edges of the school buildings.
Most students disliked weather like this.
It slowed movement.
Muted energy.
Made everything feel distant.
But Rei stood near the dormitory window and watched the rain with quiet focus.
Because rain changed behavior.
People walked faster.
Spoke less.
Lost concentration more easily.
Environmental pressure.
Subtle.
But measurable.
And today—
Every variable mattered.
Her phone vibrated once.
A notification from the school system.
Next subject announcement in thirty minutes.
Earlier again.
Ayanokōji was accelerating the pace.
Compressing preparation time.
Reducing recovery.
A war of accumulation.
Exactly as she predicted.
But that also meant something else.
He was no longer comfortable.
Rei closed her eyes briefly.
Not from fatigue.
From calculation.
Because pressure altered even the most controlled systems eventually.
And Ayanokōji—
No matter how abnormal—
Was still human.
—
The classroom atmosphere had changed before the exam even began.
No loud conversations.
No scattered laughter.
Students entered quietly, carrying tension like invisible weight across their shoulders.
Even Sudō wasn't talking much today.
That alone was enough to tell how serious things had become.
Horikita approached Rei the moment she entered.
"…You already know what he's doing."
Not a question.
A statement.
Rei placed her bag beside her desk.
"…Yes."
"…Then tell me."
A short silence followed.
Not hesitation.
Selection.
"…He's compressing cognitive recovery."
Horikita frowned slightly.
"…Meaning?"
"…Every round increases residual stress."
Rei looked toward the rain-covered windows.
"…People think exhaustion is physical."
A pause.
"…It isn't."
Now Horikita understood.
Mental fatigue.
Decision fatigue.
Pattern overload.
Ayanokōji wasn't just attacking the exams anymore.
He was attacking continuity of thought.
And if that process continued long enough—
Even talented students would collapse.
—
The announcement came exactly at 7:30 AM.
Biology.
Murmurs spread instantly across the room.
Because biology introduced a dangerous balance.
Memorization.
Analysis.
Interpretation.
Unlike physics or chemistry, biology rewarded broad adaptability.
Which meant mistakes became harder to predict.
And harder to manipulate.
Rei listened silently.
Then sat down.
Her eyes unfocused slightly.
Thinking.
Not about the subject itself.
About him.
Because the subject didn't matter anymore.
Only how he intended to weaponize it.
—
"…Who's representing us?" Hirata asked carefully.
This time, everyone looked at Rei immediately.
No resistance.
No hesitation.
Somewhere during the last few days, authority had shifted naturally toward her.
Not officially.
But functionally.
And everyone knew it.
Rei remained silent for several seconds.
Then—
"…Mii-chan."
The reaction was immediate.
Shock.
Not because she was weak.
But because she was overlooked.
Quiet.
Average.
Unremarkable in appearance and behavior.
Exactly the type of student people stopped noticing after the first week of school.
Horikita narrowed her eyes.
"…Why her?"
Rei answered calmly.
"…Because he won't prioritize her."
Silence followed.
Because that logic—
Was terrifyingly reasonable.
—
Mii-chan looked stunned.
"…M-Me?"
Rei nodded once.
"…Yes."
"…But I'm not—"
"…You're sufficient."
The girl froze slightly.
Not reassured.
But stabilized.
Because Rei's words carried something unusual.
Not encouragement.
Certainty.
—
Rei walked toward her slowly.
"…Listen carefully."
Mii-chan swallowed nervously.
"…Do not attempt perfection."
That again.
The same philosophy.
But different now.
"…Then what should I focus on?"
Rei's gaze sharpened slightly.
"…Momentum."
—
The control room activated minutes later.
The rain outside intensified slightly, droplets streaking across the massive windows behind the monitors.
Rei sat down quietly.
Across the digital space—
Ayanokōji waited.
Motionless.
As always.
But today felt different.
Not because of visible change.
Because the pressure between them had finally become direct.
No more observation.
No more testing.
Now—
They were actively hunting weaknesses.
—
The exam began.
Mii-chan appeared on-screen.
Nervous posture.
Hands slightly tense.
Breathing shallow.
Normal.
Expected.
But beneath that—
Rei noticed something important.
Momentum.
Once Mii-chan started moving, she rarely stopped to reconsider herself.
Which meant hesitation attacks would be less effective.
Good.
—
First question.
Correct.
Fast.
Second.
Correct again.
Not exceptional speed.
But smooth.
Continuous.
—
Ayanokōji observed silently.
No interference.
Not yet.
Because he was searching.
Mapping response structure.
—
Third question.
Correct.
Fourth.
Minor hesitation.
Then correct again.
Stable.
—
Rei's fingers rested lightly against the desk.
Still.
Patient.
Because she understood something critical now.
Ayanokōji preferred adaptive exploitation.
He didn't force openings.
He created them gradually.
Which meant—
The first phase was always information gathering.
—
Question five.
The screen flickered once.
Barely noticeable.
Mii-chan blinked instinctively.
Then answered.
Correct.
—
There it was.
Tiny environmental disruption.
Not enough to create failure.
Only awareness.
—
Question six.
Another flicker.
This time paired with a slight delay in loading the next problem.
Mii-chan frowned slightly.
But continued.
Correct.
—
Rei watched carefully.
Because this strategy differed from previous rounds.
It wasn't targeting cognition directly.
It was targeting comfort.
Creating subconscious instability.
—
Horikita leaned closer behind Rei.
"…He's conditioning her."
"…Yes."
Like training reflexes.
Associating the system itself with uncertainty.
—
Question seven.
Wrong.
Not from lack of knowledge.
From rushed reading.
—
Rei didn't move.
Not yet.
Because the error itself wasn't dangerous.
The reaction to the error was.
—
Mii-chan's breathing changed slightly.
Faster.
Her eyes moved more quickly now.
Searching.
Rushing.
Exactly what he wanted.
—
Question eight.
Correct.
But sloppy.
Timing uneven.
Momentum deteriorating.
—
Ayanokōji still hadn't used a major interference.
Which meant—
He was waiting for instability to mature naturally.
—
Rei's gaze sharpened.
Then—
She spoke quietly into the communication system.
"…Slow down."
Mii-chan blinked slightly at the audio cue.
"…Breathe once before reading."
A simple instruction.
Nothing complex.
But enough.
—
Ninth question.
Pause.
Breath.
Read.
Answer.
Correct.
—
The rhythm stabilized again.
Not fully.
But enough to interrupt the deterioration curve.
—
Ayanokōji's eyes narrowed slightly.
Because Rei hadn't corrected the answer.
She had corrected the psychological state.
—
Interesting.
—
Tenth question.
Difficult terminology.
Mii-chan hesitated.
Longer than before.
But instead of rushing—
She breathed again.
Then answered.
Correct.
—
Rei leaned back slightly.
Because now—
The momentum had returned.
—
Midpoint.
Scores nearly tied.
No clear advantage.
But the atmosphere inside the control room had changed.
Heavier.
Sharper.
Every adjustment mattered now.
—
Then Ayanokōji moved.
A real attack this time.
The question order shifted abruptly.
Not randomly.
Strategically.
High-difficulty questions stacked together.
Designed to spike cognitive load instantly.
—
Mii-chan froze for half a second.
Just enough.
—
Question eleven.
Wrong.
Question twelve.
Wrong again.
The pressure surged immediately.
—
Horikita inhaled sharply.
"…Two in a row…"
But Rei remained perfectly still.
Because panic here—
Would destroy everything.
—
Question thirteen appeared.
Another difficult one.
Mii-chan's fingers trembled slightly.
—
Rei intervened.
Correction one.
She restored question eleven.
Not twelve.
Intentional.
—
Horikita looked confused.
"…Why only one?"
"…Because two corrections create dependency."
A pause.
"…One creates recovery."
—
Mii-chan stared briefly at the restored score.
Then exhaled shakily.
Confidence partially returned.
—
Question thirteen.
Correct.
Question fourteen.
Correct again.
Momentum restored.
Exactly as Rei intended.
—
Ayanokōji leaned back slightly.
Not surprised.
Evaluating.
Because Rei's correction patterns were becoming more refined.
Less reactive.
More psychological.
—
Question fifteen.
A visual lag occurred again.
But this time—
Mii-chan ignored it completely.
Answered immediately.
Correct.
—
Rei noticed the smallest shift in Ayanokōji's gaze.
Recognition.
Because his environmental disruption strategy had just lost effectiveness.
Adaptation achieved.
—
Which meant he would escalate.
—
And he did.
Immediately.
Question sixteen appeared with altered formatting.
Text compressed unnaturally.
Harder to read quickly.
Subtle.
Cruel.
Effective.
—
Mii-chan blinked repeatedly.
Lost focus.
Time drained.
—
Wrong answer.
—
Rei's finger hovered over correction two.
Then stopped.
No.
Not yet.
Because she saw it now.
He wanted her to burn corrections early.
Force resource exhaustion.
—
Question seventeen.
Mii-chan's breathing became unstable again.
Pressure mounting rapidly.
—
Then—
She closed her eyes briefly.
One breath.
Read carefully.
Answered.
Correct.
—
Rei's eyes softened slightly.
Only slightly.
Because that—
Was growth.
—
Final question.
The room itself felt silent now.
Even Horikita stopped speaking.
—
Mii-chan stared at the screen.
Complex genetic analysis problem.
Layered.
Time-consuming.
Dangerous.
—
The timer ticked downward steadily.
Fifteen seconds.
Ten.
—
Ayanokōji watched without moving.
Because now—
The pressure alone was enough.
—
Five seconds.
Mii-chan's fingers tightened.
Then relaxed.
One breath.
Answer selected.
—
Time ended.
Silence.
Processing.
—
Results appeared.
Class D: 78
Class C: 78
Draw.
—
The classroom reactions later were mixed.
Confusion.
Relief.
Frustration.
Because nobody knew how to feel about a tie.
But Rei understood immediately.
This wasn't neutral.
This was escalation.
Because neither side had gained ground.
Which meant the pressure remained unresolved.
And unresolved pressure—
Always exploded eventually.
—
The hallway outside the control room was empty when Rei stepped out.
Except for him.
Of course.
Rainwater streaked faintly across the distant windows behind Ayanokōji.
The gray light made the corridor feel colder than usual.
"…A draw," he said quietly.
"…Temporarily."
His gaze rested on her calmly.
"…You're adapting faster now."
"…So are you."
Silence stretched between them.
Not hostile.
Not calm.
Something sharper.
More dangerous.
—
"…You didn't use your second correction," he observed.
"…You wanted me to."
A faint pause.
Then—
"…Yes."
Direct.
No denial.
Because deception between them had become unnecessary.
—
Rei stepped slightly closer.
"…You're accelerating pressure because you're searching for collapse."
"…Everyone collapses eventually."
"…Including you?"
Ayanokōji looked at her for several seconds.
Unreadable.
Then—
"…That's what you're trying to confirm."
Not a question.
A statement.
And correct.
—
Because Rei no longer cared only about winning exams.
She wanted proof.
Proof that even someone like him—
Had limits.
—
"…Tell me something," Ayanokōji said quietly.
"…What?"
"…If you break me…"
A pause.
"…What happens after that?"
For the first time in days—
Rei hesitated.
Very slightly.
Because she had thought about defeating him.
Surpassing him.
Destroying his system.
But not beyond that.
—
And Ayanokōji noticed.
Of course he did.
"…You don't know," he said softly.
Not mocking.
Not arrogant.
Just factual.
—
Rei narrowed her eyes slightly.
"…Does that matter?"
"…Yes."
A pause.
"…Because people who only know destruction eventually destroy themselves too."
—
The corridor fell silent again.
Rain tapped softly against the windows.
Steady.
Constant.
—
Then Rei spoke quietly.
"…Then I'll decide after I win."
Ayanokōji's expression didn't change.
But something in his gaze shifted.
Interest.
Genuine interest.
—
"…Good," he said.
"…Because I'd be disappointed otherwise."
—
He walked past her calmly.
No tension in his steps.
No hesitation.
But Rei understood something clearly now.
—
This conflict had already evolved beyond class competition.
Beyond points.
Beyond exams.
—
They were forcing evolution out of each other.
And neither of them—
Could stop anymore.