The Greatest Assassin Gets Reincarnated in Tensura

Arion sat upon his obsidian throne, his golden eyes reflecting the flames of destruction that flickered across the Eastern Empire.

The world was in chaos.

Milim's wrath had been unleashed.

He had seen it coming. He had felt it long before it even happened.

Veldanava had told him this day would come. And he had not been meant to stop it.

His generals stood in silence before him, awaiting his command.

Diablo.

Testarossa.

Carrera.

Ultima.

All of them were prepared to move at his word.

But no word came.

Tension filled the air. The world outside was breaking, and yet their lord sat there, watching without interference.

Finally, Testarossa spoke, her voice careful but firm.

"My Lord, the Eastern Empire is falling into chaos. The world is shaking with the weight of Milim's power. Do we not act?"

Arion remained silent for a moment. Then, without looking at them, he spoke.

"No."

Carrera scowled. "No?"

Diablo chuckled darkly. "Interesting…"

Ultima tilted her head, smiling slightly. "Are we just going to watch, then?"

Testarossa's expression didn't waver, but she clearly wanted an explanation.

Arion finally stood from his throne, his long coat shifting with his movements. He turned his gaze to them, and his golden eyes shone brighter than before.

"There is something I must do."

And then—

He vanished.

His generals felt the shift in space, but none moved to follow.

Carrera clicked her tongue. "Tch. He does this every time."

Diablo smirked. "Let him be. He is… tending to something far greater than this battlefield."

Testarossa crossed her arms, staring at the spot where their lord once stood.

Ultima only grinned.

"He'll be back."

Beyond the Mortal Plane – The Final Meeting

Arion's vision blurred.

He felt his very existence being pulled away, not forcibly—but naturally, as if he had always belonged to this place.

And then—

He stood in a realm beyond time.

A space of infinite light and void, where reality itself bent and folded in ways that mortal minds could never comprehend.

And before him—

Stood Veldanava.

Not as a weakened god.

Not as a dying legend.

But as the Supreme One he had always been.

Veldanava's eyes met Arion's, a familiar warmth within them, yet an undeniable finality.

"You have come, Arion."

Arion took a slow breath, studying the god before him. He had known this was coming, but now that it was here… something felt different.

"…So it is time."

Veldanava nodded. "Yes. My role is over. Yours begins."

Silence fell between them.

But Arion, for once, did not let it linger.

He stepped forward, his voice calm yet firm.

"How do you feel about this?"

Veldanava blinked, slightly surprised by the question.

Arion continued.

"You are leaving this world. Leaving your child. You knew this day would come, but now that it's here…" he narrowed his eyes. "Are you truly at peace?"

For the first time, Veldanava's expression softened. A flicker of sorrow crossed his face—brief, but undeniable.

Then, he smiled.

"No parent is ever truly at peace leaving their child behind."

Arion remained silent.

Veldanava continued, his voice steady but carrying a weight of emotion.

"Milim will suffer. She will rage. She will make mistakes. But she will live." His gaze turned distant. "That is enough for me."

Arion exhaled.

"And the world?"

Veldanava chuckled, shaking his head. "The world will be fine. It always adapts. Even without me."

There was another pause before Arion spoke again.

"…You could stay."

Veldanava smiled sadly. "You know that is not how this ends."

Arion clenched his fist.

"Then why give me this burden?"

Veldanava stepped closer, raising a hand. "Because you will not fail."

A golden light engulfed the void, washing over Arion like a tide of creation itself.

With it came knowledge. Power.

The essence of a Supreme Being.

Arion trembled as the weight of existence itself flowed into him.

The truth of the universe. The balance of creation.

He felt everything.

But he did not resist.

This was his fate.

His ascension.

Veldanava smiled one last time. "Carry on where I could not."

Then—

He was gone.

And Arion opened his eyes.

A new dawn had begun.

----_____------

Across the world, those who stood at the top of existence felt the shift.

A disturbance so profound that it sent shockwaves rippling through reality itself.

It started with Rudra and Velgrynd in the Eastern Empire.

The two stood on the grand balcony of the imperial palace, the wind howling past them. The Eastern Empire was intact, but the atmosphere was wrong—thick, suffocating, oppressive. Magicules swirled in unnatural chaos, pressing against the world like a force of nature on the brink of devastation.

Velgrynd, standing beside Rudra, clenched her fists. "What… is this feeling?"

Then, the Voice of the World spoke.

"THE INDIVIDUAL: MILIM NAVA…"

Velgrynd's eyes widened.

Rudra took a sharp breath. No.

"THE HARVEST FESTIVAL TO BECOME A TRUE DEMON LORD… IS ABOUT TO BEGIN."

Then came the shockwave.

A monstrous, earth-shattering pulse of power erupted from the distance, sending tremors through the empire. Buildings shook, towers groaned, and the sky itself warped.

Rudra's hands clenched the balcony's edge as realization sank in. "She's—awakening."

On his frozen throne, Guy Crimson had never looked so serious.

Velzard stood beside him, her icy aura pulsing with tension. She had felt it the same moment he had.

Then, the announcement.

Then, the shockwave.

The Ice Continent trembled under the force of the power Milim was unleashing.

Guy's eyes narrowed. "She's lost control."

Velzard, for once, looked concerned. "Can you stop her?"

Guy's lips curled into a half-smile—but it didn't reach his eyes.

"…I'll try."

Milim hovered over the remains of the Elven Kingdom.

Her body pulsed with a radiance both divine and draconic.

Golden light clashed violently with crimson destruction, merging into a chaotic storm that tore through the air.

Her breath was ragged.

Her eyes glowed with unrestrained fury.

She had never felt power like this.

She had never felt such rage.

Then, the Voice of the World came again.

"UNLOCKING ULTIMATE SKILL: SATANAEL, LORD OF WRATH."

Her magicules surged. The world itself shuddered.

"ACQUIRING UNIQUE SKILL: MILIM'S EAR."

Her senses expanded.

She could hear everything. The whisper of the wind. The distant cries of terrified people. The heartbeats of the soldiers in the Eastern Empire—miles away.

"ACQUIRING UNIQUE SKILL: MILIM'S EYE."

Her vision shifted.

She could see everything.

The hidden strengths. The hidden fears.

The weaknesses of every living being in her sight.

She saw beyond flesh—beyond lies—beyond reality itself.

And then—

"MAGICULE BREEDER ACTIVATED."

The world darkened.

The very air trembled as unlimited power flooded into her, overwhelming, endless, unstoppable.

She clenched her fists, her nails piercing her skin.

"It's not enough."

The power kept rising.

Her wrath kept rising.

The angrier she became—the stronger she became.

But with each surge of strength, she felt herself slipping further—losing control.

She gritted her teeth.

"Not yet."

Her vision turned red.

Her rage exploded.

And then—

A figure descended from the sky.

A red streak cut through the storm.

Guy Crimson.

He landed gracefully, his demonic aura clashing with the destructive energy around them.

His golden eyes met Milim's.

He saw no reason.

No restraint.

Only pure, seething, uncontrolled wrath.

Velzard appeared beside him, her icy aura flaring. She was tense. "Guy… be careful."

Milim stared at him.

Her lips curled—not in a smirk. Not in amusement.

But in rage.

Guy sighed, tilting his head. "Alright, kid."

His voice was calm—but serious.

"You're about to destroy a little more than just the elves."

Milim's aura flared.

Guy's smile faded.

He took a step forward. "You want to fight me?"

Milim vanished.

She reappeared in front of him.

Her fist was already moving.

Guy barely had time to raise his arms before—

BOOM.

A shockwave erupted as Milim's punch slammed into his guard.

The ground beneath them collapsed. Mountains in the distance crumbled. The sheer force of her strike shattered the very fabric of space.

Guy skidded backward.

For the first time in a long, long time…

He felt pain.

His eyes widened slightly.

Then—

Milim moved again.

Faster. Stronger. More ruthless.

She was an unstoppable storm.

Guy barely had time to react before she was on him again.

Velzard tried to intervene—but the moment she got close, Milim's energy surged so violently that the cold itself was shattered.

"Damn it—" Velzard cursed, pulling back.

Guy gritted his teeth. He blocked. He dodged. But—

She was getting stronger.

Every second.

Every time she attacked—her strength multiplied.

It was endless.

And then—

Milim stopped.

She stood there, breathing heavily, her body trembling from the sheer power coursing through her.

Her voice was low. Dangerous.

"…Get out of my way."

Guy exhaled.

"…You can't control it, can you?"

Milim snarled. "I don't need control. I need—"

Her aura exploded.

Guy's expression darkened.

"—destruction."

And then—

She attacked again.

And this time—Guy couldn't hold her back.