Morning wind swept through the cliffs surrounding Kumogakure.
Far below the main academy complex, a rarely used training sector stretched across the valley.
A massive rock wall dominated the landscape.
Wooden platforms.
Climbing routes.
Observation towers carved into stone.
Everything here served one purpose.
Vertical combat.
Students gathered at the base of the cliff.
Heads tilted upward.
Daigo squinted.
"…We're supposed to fight on that?"
Akari studied the terrain carefully.
"Not just fight."
She pointed toward the scattered platforms.
"Move."
Instructor Takeshi Aran stepped forward.
"This training field simulates real combat zones in the Land of Lightning."
He gestured toward the cliff.
"Steep terrain."
"Limited footing."
"Unstable positioning."
He paused.
"Today's focus is three-dimensional movement."
Aran walked to the base of the wall.
Placed one foot against the stone.
Chakra gathered beneath his sandals.
Then—
He stepped forward.
And ran straight up the wall.
Students fell silent.
He climbed nearly twenty meters without slowing.
Then landed effortlessly on a wooden platform.
Looking down—
"Wall-walking is only the beginning."
He jumped.
Mid-air—
His foot struck a vertical surface sideways.
He changed direction.
Another step.
Another jump.
He moved across the cliff face like gravity had no authority.
Then dropped lightly back to the ground.
"This is how shinobi fight."
The exercise began.
Students rushed forward.
Some climbed.
Some slipped.
Some failed halfway and dropped back to the ground.
Daigo took his turn.
Confident.
Fast.
Two steps—
Then he slid down instantly.
"…I hate mountains."
Akari didn't even look at him.
"Your chakra control is terrible."
Raizen stepped forward.
No rush.
No wasted movement.
He focused.
Chakra flowed evenly through his feet.
Balanced.
Measured.
His foot touched the wall.
Step.
Then another.
Then another.
Raizen climbed steadily.
No slipping.
No hesitation.
Inside his mind, Astra monitored.
"Chakra output stable."
"Balance optimal."
Raizen reached a mid-level platform.
Akari moved next.
But she didn't stop.
She climbed higher.
Higher.
Until she reached the upper ridge.
Then—
She drew her bow.
An arrow cut through the air.
It struck a target far below.
Clean.
Precise.
The field went quiet.
Daigo blinked.
"…Yeah, okay."
Akari lowered the bow.
"High ground wins fights."
Instructor Aran nodded.
"Correct."
He pointed upward.
"Height gives vision."
Then downward.
"But it also makes you a target."
He drew a quick diagram in the dirt.
"Position determines survival."
The next phase began.
Movement between platforms.
Jump.
Land.
Stick.
Jump again.
Now balance mattered more than strength.
Students hesitated mid-air.
Some missed entirely.
Others barely recovered.
Daigo leaped between two posts.
Landed—
Then slipped.
"AH—"
He caught the edge just in time.
Raizen reached down and pulled him up.
Daigo exhaled hard.
"…Appreciate it."
Raizen nodded.
"Control your output."
Rei moved differently.
Light.
Silent.
He didn't jump hard.
He drifted.
Each movement placed exactly where it needed to be.
Almost invisible.
Akari dominated from above.
Arrows landing with precision.
Controlling the field from distance.
Raizen—
Focused on something else.
Rhythm.
Step.
Jump.
Turn.
Land.
Not climbing.
Flowing.
Inside his mind, Astra analyzed.
"Three-dimensional movement efficiency increasing."
Raizen adjusted again.
Fighting on flat ground was predictable.
But this—
Was chaos.
Height.
Angles.
Momentum.
Everything changed.
Raizen jumped to another platform.
Then another.
Then another.
Each movement smoother.
Cleaner.
Faster.
Instructor Aran watched from below.
"Good."
Very good.
Raizen wasn't just adapting.
He was building something.
A movement style.
By midday, most students were exhausted.
Breathing heavy.
Muscles strained.
But the lesson was clear.
Combat wasn't two-dimensional.
It never had been.
That evening, Raizen stood alone behind the dormitories.
A smaller training wall in front of him.
He moved again.
Step.
Jump.
Turn.
Land.
Again.
Again.
Again.
Inside his mind, Astra recorded.
"Movement pattern optimization progressing."
Raizen slowed.
Looked toward the distant mountains.
These cliffs.
These heights.
These storms.
They weren't obstacles.
They were weapons.
And if he intended to stand at the top—
He wouldn't just climb them.
He would move through them—
Like the storm itself.