Suguru didn't sleep.
Not fully.
Every time his breathing slowed enough to drift—
he felt it.
Not mana touching him.
Not Aura failing.
But something subtle.
Like the edges of his body were… slightly misaligned.
As if the outline of him didn't sit perfectly where it should.
Before dawn, Garron was already awake.
He didn't ask how Suguru slept.
He looked at him once—
and saw enough.
"Sit," Garron said.
Suguru obeyed.
Cross-legged. Spine straight.
Hands resting lightly on his thighs.
"Describe it," Garron said.
Suguru closed his eyes.
"It's not pressure."
"Good."
"It's not pulling."
"Good."
He swallowed.
"It feels like I'm… a fraction out of place."
Silence.
Then:
"…That's worse," Garron muttered.
"Is it mana?" Suguru asked.
"No."
"Then what?"
Garron crouched in front of him.
"It's attention."
Suguru opened his eyes.
"That's not something you can feel."
Garron's gaze hardened.
"When enough people direct awareness toward a single instability, the environment shifts."
Suguru frowned.
"I'm not doing anything."
"That's not the point."
Garron stood.
"You stabilized during contact. That alone is irregular. Systems that monitor mana disturbances look for collapse. You didn't collapse."
"So?"
"So now they're adjusting around you."
The words didn't feel dramatic.
They felt mechanical.
Like gears turning somewhere distant.
Unseen.
"Stand," Garron said.
Suguru did.
"Move."
They sparred.
Not fast.
Not violent.
Just structure against structure.
Garron stepped in—
Suguru shifted.
Heel placement.
Hip rotation.
Aura aligned through his spine.
Clean.
Controlled.
Then it happened.
Not during impact.
Not during strain.
But during stillness between movements.
His awareness flickered outward—
just slightly.
And for a split second—
the Boundary sharpened.
Too sharp.
Like glass.
Suguru's vision blurred.
His right arm tremored.
Not from fatigue.
From interference.
Garron struck his shoulder immediately.
Hard.
Suguru hit the dirt.
Breath knocked out.
Aura shattered from his posture.
The flicker vanished instantly.
"Up," Garron said.
Suguru pushed himself upright, chest tight.
"What was that?"
"You drifted."
"I didn't mean to."
"That doesn't matter."
Suguru's hands were shaking.
Not violently.
But subtly.
His outline still felt… off.
Like his body didn't fully agree with its own position.
"Again," Garron said.
They reset.
This time Suguru focused deeper inward.
Breath anchored.
Pelvis aligned.
Crown lifted.
Inside first.
Always inside.
They moved.
Strike.
Deflect.
Shift.
Hold.
This time no flicker.
No glass edge.
Just fatigue building normally.
Predictably.
Human.
After an hour, Garron stopped.
"You see the difference?"
Suguru nodded slowly.
"When I relaxed… it almost pulled."
"You didn't relax," Garron corrected.
"You became curious."
That landed heavier than any strike.
"You cannot afford curiosity right now," Garron said.
"Why?"
"Because the more you probe the Boundary… the more it defines you as responsive."
Suguru's jaw tightened.
"So I just ignore it?"
"You stabilize. You do not explore."
Later that day—
it happened again.
But not during training.
Not alone.
At the market.
A cart overturned near him.
A child nearly crushed beneath it.
Suguru moved without thinking.
He lunged.
Caught the side beam.
His body aligned perfectly—
Aura driving through bone and tendon.
For half a second—
strength beyond his usual output surged through him.
Not mana.
Not fully.
But close.
Too close.
The cart lifted just enough.
Others rushed in.
Pulled the child free.
Suguru released the beam—
and the world tilted.
His knees buckled.
Sound distorted.
The Boundary flared—
not outward.
Inward.
Like something testing the seams of him.
He dropped to one knee.
Sweat cold against his back.
His vision swam.
Not power.
Not triumph.
Cost.
A passerby grabbed his arm.
"You alright?"
Suguru forced his breath steady.
Inside.
Inside.
Inside.
The tremor eased.
But the outline feeling deepened.
Like his silhouette was slightly thinner than before.
That night—
Garron didn't scold him.
He didn't praise him either.
"You used full structural output," Garron said quietly.
"To save someone."
"Yes."
"That was correct."
Suguru blinked.
"…It didn't feel correct."
"No."
Garron's eyes darkened.
"Because interference amplifies strain."
Suguru looked at his hands.
They felt normal.
But not anchored.
"Is it going to get worse?" he asked.
Garron didn't answer immediately.
"Yes."
Silence filled the yard.
The wind moved softly through worn wood panels.
"You have three options," Garron finally said.
"Withdraw. Make yourself invisible again."
Suguru knew what that meant.
Stop training.
Stop stabilizing.
Return to ordinary weakness.
"Second?"
"Continue strengthening your Aura until your structure no longer fluctuates under observation."
"That sounds slow."
"It is."
"And the third?"
Garron's gaze sharpened.
"You deliberately cross the Boundary once. Controlled. With supervision."
Suguru's stomach tightened.
"That's dangerous."
"Yes."
The wind shifted.
The hum at the edge of his awareness pulsed faintly.
Clearer than yesterday.
"I don't want power," Suguru said quietly.
Garron studied him.
"I know."
"That's not why I'm training."
"I know."
Suguru inhaled slowly.
"If I withdraw, I stay small."
"Yes."
"If I continue slowly, interference increases."
"Yes."
"And if I cross once…"
"You risk damage."
Suguru closed his eyes.
For the first time—
the choice felt real.
Not theoretical.
Not distant.
Somewhere beyond the ward—
figures reviewed reports.
Stability under impact.
No mana spike.
Repeated minor fluctuations.
Classification updated:
Persistent Variable.
In the yard—
Suguru opened his eyes.
"I'll keep strengthening," he said.
"No crossing."
Garron nodded once.
"Then we fortify."
And for the first time—
Suguru understood something heavier than fear:
Interference wasn't trying to break him violently.
It was trying to thin him gradually.
Until the Boundary no longer separated him from what waited beyond it.