The Greatest Assassin Gets Reincarnated in Tensura

A clash beyond mortal comprehension was about to begin.

The air trembled, unable to contain the sheer power of the two beings who now stood at the center of all existence. The stars dimmed, the void itself recoiled, and the fabric of reality twisted in anticipation.

Arion, the Abyssal Phantom, Lord of Endless Rebirth, stood motionless, his piercing gaze locked onto the divine figure before him. Veldanava, the Creator, the Primordial God of All, simply smiled—a smile not of arrogance, but of pure, unshackled excitement.

Without a word, Arion vanished.

Not teleported, not moved at high speed—vanished.

Veldanava's eyes gleamed with anticipation. He had seen many warriors, many gods, many kings—but this assassin was different.

Suddenly—a flash.

Arion reappeared behind Veldanava, his dagger materializing from the void itself, aimed at the god's spine.

But before the blade could connect—

BOOM!

A golden shockwave erupted from Veldanava's body, hurling Arion across the battlefield at impossible speed. He crashed into the shifting void, space itself breaking apart from the impact.

But even before the dust could settle—

Arion was already moving.

His Ultimate Skill: Abyssal Horizon, Lord of Infinite Pathways activated, allowing him to exist in multiple dimensions simultaneously.

Ten Arions appeared at once, each from a different plane of existence, each armed with a different weapon.

A spear from the void.

A sword infused with conceptual severance.

A bow that fired arrows made of absolute nothingness.

A glaive wrapped in the abyss itself.

Veldanava grinned.

"Magnificent!" he roared, before unleashing his own divine counterattack.

Arion struck first.

Each of his attacks bypassed space, time, and even causality, yet Veldanava met every single one with divine precision.

The spear? Blocked by a mere flick of Veldanava's wrist, shattering it into void dust.

The sword? Countered by a wave of golden flames, consuming the abyss itself.

The arrows? Erased before they could ever exist, undone by sheer divine authority.

The glaive? Met with a single punch, sending shockwaves that obliterated multiple dimensions.

But Arion was not just attacking—he was analyzing.

Pandoria, his Ultimate Skill, was working relentlessly in the background.

"Master, I have analyzed 4,756 attacks and countermeasures. Adjusting battle strategy now."

Arion smirked.

"Then let's push him further."

The Abyss Awakens

Suddenly—everything went dark.

Ultimate Skill: Pandemonium Abyss, The Infinite Shadow Emperor.

Arion did not just control the void.

He became the void.

A shadow that could not be touched, a force that could not be stopped.

The battlefield itself vanished, consumed by endless darkness, where only Arion and Veldanava remained.

Then—Arion struck.

A thousand slashes from every conceivable direction.

Veldanava countered—but missed.

For the first time in eons—he was cut.

A thin line of golden ichor dripped down his arm.

Veldanava laughed.

"Amazing! This is the kind of battle I have longed for!"

His divine presence surged, shattering the abyss, returning the cosmos to existence with a mere thought.

And then—he attacked.

A single punch that shattered multiple timelines.

A blast of celestial light that erased concepts of existence.

A divine roar that sent entire galaxies collapsing into themselves.

Arion dodged, countered, adapted—but Veldanava was pushing him beyond anything he had ever faced.

The god's speed became untrackable. His power transcended logic.

Then—he landed a hit.

BOOM!

Arion was sent crashing through multiple realities, his body erased, reconstructed, and erased again.

But Arion's trump card wasn't his attack power.

It was his endurance.

With Ultimate Skill: Abyssal Phantom, Lord of Endless Rebirth, his body regenerated faster than conceptual erasure could destroy it.

He could not die.

Veldanava's attack—capable of unmaking existence itself—had left him perfectly unharmed.

For the first time, Veldanava's eyes widened in genuine surprise.

"You… healed through absolute erasure?"

Arion wiped blood from his lips, smirking.

"You're not the only one with absurd abilities."

Both warriors stood at their peak, their eyes locked in a clash of sheer will and power. The battlefield trembled beneath them, space itself bending under the immense pressure of their presence. Divine energy radiated from Veldanava like a supernova, while Arion's abyssal aura coiled like a living shadow, waiting to consume all in its path.

As they circled each other, Pandoria's voice echoed in Arion's mind through thought communication. "Master, I was able to analyze the divine energy Veldanava is using. By doing so, I have successfully integrated its principles with your own power. As a result, I can now merge all three of your Ultimate Skills."

Arion's eyes widened in surprise. The possibility had never even crossed his mind. To merge Abyssal Horizon, Lord of Infinite Pathways, Abyssal Phantom, Lord of Endless Rebirth, and Pandemonium Abyss, the Infinite Shadow Emperor into something greater?

Pandoria continued, Should I proceed, Master?

Arion clenched his fists as a grin slowly spread across his face. "Do it."

The moment his words left his lips, a second voice echoed in his mind—deeper, omnipresent. It was the Voice of the World.

***Merging Ultimate Skills: Abyssal Horizon, Lord of Infinite Pathways – Abyssal Phantom, Lord of Endless Rebirth – Pandemonium Abyss, the Infinite Shadow Emperor… Processing…***

A shattering sound filled the space around them, as if the very laws of existence were breaking apart to reform something even grander.

***New Special Ultimate Skill Acquired:***

***Nyx Eterna: The Omnipotent Abyss Sovereign.***

The moment the new power took form, Arion felt his soul twisting, shifting—evolving. He was no longer merely a ruler of shadows or an emperor of endless rebirth. He had become something beyond. The void itself answered his call, the infinite pathways of reality bent to his will, and the abyss no longer sought to consume him but instead, to serve him.

His aura exploded outward, a swirling vortex of pure darkness interwoven with radiant threads of deep crimson and abyssal indigo. The battlefield turned into a chaotic storm of clashing divinity and endless void. Arion's form flickered between dimensions, his very existence transcending the concept of space and time.

Veldanava, who had been watching intently, smirked. "You are evolving in the middle of our battle? Impressive." His golden eyes glowed with divine authority. "I knew you wouldn't disappoint me, Arion."

Then, without warning, Veldanava raised his hand, and the pressure around them multiplied tenfold. The sheer force of his presence shattered celestial bodies in the distance. "Then let me answer you with a little more power."

A pulse of divine energy erupted from him, reshaping the very essence of reality around them. Golden flames surged in every direction, forming spirals of celestial destruction. The power was so immense that if this battle were being held in the Cardinal World, it would have turned everything to dust in an instant.

Arion, however, was unfazed. If anything, he relished the challenge. With his newfound power, he reached into the abyss, pulling forth an endless armory of void-forged weaponry. Blades forged from the concept of annihilation itself hovered around him, each one carrying the weight of an entire dimension's destruction. Chains of abyssal entropy coiled around his arms, humming with the power to erase existence upon touch.

Veldanava vanished and reappeared before Arion in an instant, his fist crashing down like a collapsing star. Arion barely managed to parry with an abyssal greatsword, but the impact sent shockwaves rippling across the battlefield, tearing through multiple dimensions like fragile glass.

The two warriors clashed at speeds beyond comprehension. Every collision of their blows created bursts of light and darkness, explosions so violent that they threatened to erase the fabric of reality itself. Veldanava swung his arm, unleashing golden lances of divine judgment, while Arion countered with abyssal tendrils that devoured them before they could reach him.

"You have transcended your limits, Arion," Veldanava admitted, dodging an onslaught of void spears that shattered entire realms behind him. "But power alone is not enough."

Arion smirked. "You're right." He clenched his fist, activating *Nyx Eterna: The Omnipotent Abyss Sovereign*. The battlefield shifted. No longer were they fighting in the remains of a destroyed world; instead, the very concept of the battlefield was rewritten.

They now stood in a realm of endless abyss, where time and space were dictated *by Arion's will alone.

Veldanava narrowed his eyes. "You changed the rules of our fight?"

Arion raised a hand, and from the abyss, titanic figures emerged—shadows given form, entities that existed beyond mortality, beyond divinity. Each one a manifestation of destruction and rebirth, created purely from his skill's authority.

"This is my domain now," Arion declared, his voice echoing through the abyssal cosmos. "Let's see if you can still stand at the top when the very foundations of reality are against you."

Veldanava chuckled, unfazed by the overwhelming odds before him. His golden aura flared even brighter, the sheer force of his presence pushing back against Arion's abyssal domain. "Then let's see whose will reigns supreme."

With that, they charged at each other once more, and the battle between Abyss and Divinity reached heights never before witnessed in any realm.