The forest training sector below Kumogakure Academy stretched across several mountain ridges.
Tall pines.
Jagged rock outcrops.
Hidden streams cutting through uneven ground.
Mist drifted between the trees.
Sound carried strangely here.
Sometimes too far.
Sometimes not at all.
And one careless step—
Could give everything away.
Students gathered at the edge of the clearing.
The forest waited in silence.
Instructor Takeshi Aran stepped forward.
"In real missions," he said calmly, "you will hunt."
He gestured toward the trees.
"And sometimes—"
A pause.
"You will be hunted."
The atmosphere shifted.
"This exercise is called the Hunter Run."
Two groups.
Hunters.
Targets.
"Targets enter first."
"Hunters follow after ten minutes."
"If you are tagged—"
He tapped his vest.
"You are eliminated."
"If you survive until time expires—"
"You succeed."
Daigo leaned toward Raizen.
"…We better be hunters."
Aran checked the roster.
"First round targets: Akari Mizuta.
Raizen Tenrai. Three additional students."
Daigo sighed.
"…Of course."
The targets moved first.
The forest swallowed them quickly.
Akari adjusted her bow as they stepped under the canopy.
Raizen moved beside her.
Roots twisted underfoot.
Leaves shifted with every step.
Air felt heavier.
Akari spoke quietly.
"They'll spread out."
Raizen nodded.
"They won't rush."
Hunters who rushed—
Missed.
As they moved deeper, something changed.
Not chakra.
Something else.
Subtle.
Raizen slowed.
The air felt different.
Not in strength—
In pattern.
Movement disturbed it.
Pressure shifted it.
Inside his mind, Astra spoke.
"Environmental sensitivity increasing."
Raizen frowned slightly.
This wasn't sensing chakra.
This was—
Awareness.
The beginning of something deeper.
The Tenrai bloodline stirred.
Heaven Pulse.
The forest breathed—
And he could feel it.
Ten minutes passed.
The hunters entered.
Noise broke the silence.
Branches snapped.
Footsteps rushed.
"Found you!"
Daigo burst through the trees.
An arrow struck the bark beside his head.
He froze instantly.
"…Okay—fair."
Akari stepped down from above.
"You're loud."
Daigo raised his hands.
"I surrender."
A whistle echoed.
Eliminated.
Silence returned.
Elsewhere—
Raizen moved.
Step.
Pause.
Step.
Every motion deliberate.
Inside his mind, Astra updated.
"Disturbance detected. Rear approach."
Raizen didn't turn.
He walked forward.
Two seconds later—
A figure burst from behind.
Kunai raised.
Raizen pivoted.
One motion.
Wrist caught.
Tap.
"Tag."
The student groaned.
"…Seriously?"
Whistle.
Another gone.
The forest changed again.
The hunters adapted.
They slowed.
Tracking now.
Footprints.
Broken branches.
Shifted leaves.
Raizen recognized it immediately.
They learned.
Good.
Now it was real.
Above the forest floor—
Akari waited.
Perched on a thick branch.
Still.
Silent.
Below her—
Movement.
A hunter stepped cautiously through the trees.
Akari drew.
Slow.
Controlled.
Release.
The arrow struck.
Clean.
Whistle.
Gone.
Time passed.
The forest grew quieter.
Fewer movements.
Fewer sounds.
Only the careful ones remained.
Raizen felt it again.
The shift.
Subtle.
The air changed—
Before the movement came.
He turned slightly.
Rei stepped from behind a tree.
Silent.
As always.
Rei Kisaragi.
"You're hard to track."
Raizen smiled faintly.
"You're not easy either."
Rei shrugged.
"Got lucky."
Neither moved.
No need.
Two hunters.
Two targets.
Both understood.
The whistle cut through the forest.
Time limit reached.
They didn't look away.
Then—
Rei stepped back into the trees.
Gone.
Students gathered again at the clearing.
Instructor Aran nodded once.
"Patience."
His eyes moved across the group.
"Some of you are beginning to understand it."
Raizen and Akari exchanged a brief glance.
No words needed.
That evening—
Raizen sat alone on a ridge overlooking Kumogakure.
Lights flickered across the village below.
Storm clouds drifted overhead.
Inside his mind, Astra spoke.
"New sensory pattern confirmed."
Raizen closed his eyes.
The air moved.
Wind currents shifted.
Subtle disturbances spread outward.
He could feel them.
Not chakra.
Everything.
"Heaven Pulse: early-stage activation."
Raizen exhaled slowly.
Not forced.
Not sudden.
Natural.
Just like his father intended.
And for the first time—
Raizen wasn't just reacting to the world around him.
He was beginning to feel it.