The Greatest Assassin Gets Reincarnated in Tensura

In a faraway dimension, beyond the reach of mortal comprehension, a force unlike any other stirred. It was a dragon whose very existence spelled doom for all in its path. Its name: Ivarage, the World-Destroying Dragon.

The beast moved with terrifying purpose, its massive form blotting out the sky, leaving devastation in its wake. The sheer force of its presence alone was enough to rupture the fabric of reality. It was an entity of annihilation, an unstoppable force that had consumed countless worlds. And now, it was making its way toward the Cardinal World.

Feldway, accompanied by his most trusted angels, stood against the monstrosity, but even their divine strength proved insufficient. Every blast of light they hurled, every celestial strike they unleashed, was brushed aside like dust before a hurricane.

In his celestial palace, Veldanava, the Creator and Supreme God, observed the battle with keen eyes. He had foreseen this moment but chose not to intervene directly. Despite Ivarage's boundless destruction, Veldanava saw a future where the beast might evolve beyond its primal rage. He would not destroy it, but he needed to stop it.

Thus, he summoned the mightiest beings of the Cardinal World:

Guy Crimson, the Primordial Demon Lord.

Velzard, the White Ice Dragon.

Velgrynd, the Scorching Flame Dragon.

Rudra Nasca, the First True Hero.

Feldway, the Divine Commander of the Angels.

Dino, the Fallen Seraph.

Dragruel, the Giant Guardian.

They all answered his call, arriving one by one at the battlefield. Towering mountains crumbled beneath them as they unleashed their might against Ivarage. Guy, with his chaotic infernal energy, Velzard, encasing the dragon in unbreakable ice, Velgrynd, setting the sky ablaze, and Rudra, cutting through the void itself with his legendary blade—each attack was powerful enough to reshape continents, yet Ivarage stood unharmed.

Hours passed, yet they barely slowed the beast down. Their strongest strikes only angered it further. Ivarage let out a world-ending roar, sending shockwaves that tore through the sky, splitting dimensions apart. Even Guy, the strongest Demon Lord, gritted his teeth. "Tch… This thing is absurd."

Watching from his throne, Veldanava sighed. "It seems they need a little extra help." With a flick of his fingers, he sent a message through thought communication.

Far away, Arion, planning his next moves. Beside him, Veldora, the Storm Dragon, was flexing his muscles and laughing. "Hahaha! I should try goku transformation"

Arion sighed. "and next thing you know you will want became the dragon Shenron."

Veldora stopped laughing, eyeing him. "good idea mu friend good idea"

Arion chuckled but said nothing. "Come, your brother needs us."

With a wave of his hand, Arion cast an illusion, cloaking himself in a disguise. His identity was not to be revealed—not yet. A moment later, both he and Veldora vanished, teleporting directly onto the battlefield.

A sudden gust of wind heralded their arrival. The battle momentarily paused as Velzard narrowed her eyes. "You finally decided to work, Veldora?"

Veldora laughed heartily. "Worry not! I, Veldora, the Storm Dragon, shall handle this!"

The others turned their gaze toward the cloaked figure beside him. They could feel it—a power so overwhelming it dwarfed even their own. Who was he?

Velzard, Velgrynd, and Guy barely had time to react before Veldora launched himself forward, fists crackling with pure energy. When his blow connected with Ivarage, the beast staggered for the first time.

Gasps echoed across the battlefield.

Velzard's eyes widened. "Impossible… we've been fighting for hours, and he hurt it in one attack?"

Velgrynd clenched her fists. "So this is what she meant…" She had always suspected her younger brother had been holding back. Now, she was certain.

As Veldora unleashed a flurry of devastating blows, the cloaked figure remained still, merely watching. Arion was waiting, letting Veldora have his moment.

After a while, he moved.

Before anyone could react, Arion vanished. One moment he was beside Veldora, the next, he was behind Velzard. His breath brushed against her ear as he whispered, "Let me handle this, princess. Don't sully your beauty."

Velzard's face turned red, her breath hitching. But before she could respond, he was already gone—a blur of speed beyond comprehension.

The others barely registered his movement before they saw him standing before Ivarage, raising his hand. An energy unlike anything they had seen before gathered around him.

And then, he struck.

The impact was beyond devastating. The heavens trembled, space itself twisted, and time froze for an instant. The sound was deafening—a cosmic explosion that sent shockwaves through multiple dimensions.

In mere seconds, Ivarage was knocked unconscious.

A stunned silence followed.

"...What just happened?" Guy muttered.

Rudra's sword hand shook. "We fought for hours… and he… ended it instantly?"

Velzard, still flustered, could only whisper, "Who… who is he?"

From his celestial throne, Veldanava laughed heartily. "Hahaha! Arion, full of surprises as always."

The battle was over. Veldanava descended from the heavens, his divine presence radiating power and authority. "I'll take it from here." With a mere gesture, he sealed Ivarage, binding its power within an eternal prison. The World-Destroying Dragon would no longer be a threat—at least, for now.

But rather than celebrating, the warriors on the battlefield had only one question.

Who was Arion?

Before they could ask, Arion and Veldora vanished—gone as quickly as they had appeared.

And so, the legend of the mysterious warrior was born, whispered in hushed voices among even the most powerful beings.

Veldora simply smirked as they departed. "That was fun."

Arion, his face unreadable, looked at the fading battlefield. "Indeed… but this is just the beginning."

As the dust settled and the once-raging battlefield returned to eerie silence, Velzard was the first to step forward. Her pristine ice-blue hair swayed in the gentle breeze as she approached Veldanava, her piercing blue eyes fixed on him. Behind her, Velgrynd, Rudra, Guy, Feldway, and Dino followed, each with a mix of curiosity and frustration.

Velzard folded her arms, her regal posture unshaken. "Alright, Veldanava," she said, tilting her head. "Who was that? That… mysterious person with Veldora?"

Velgrynd, standing beside her sister, crossed her arms as well. "Yeah, I'd like to know too. He moved so fast, and his power… It was unreal."

Rudra narrowed his eyes. "I've never sensed a being like that before. No records, no legends, no whispers in history. Yet, he fought like someone who has mastered the laws of existence itself. Tell us, Veldanava, just who is he?"

Guy Crimson, standing casually with his signature smirk, interjected. "More importantly, where can I find him? I wouldn't mind fighting someone like that." His crimson hair glowed faintly under the dimming sky, excitement flickering in his eyes.

Feldway and Dino, usually calm and observant, had their own concerns. Feldway's sharp gaze fixed on Veldanava. "If someone that powerful exists, we should know about him."

Dino, on the other hand, let out a lazy sigh, placing his hands behind his head. "Man, this is a hassle… That guy was insanely strong. If he wanted, he could've wiped the floor with all of us. Not knowing his identity kinda makes me nervous."

Veldanava simply chuckled, his golden eyes brimming with amusement. He raised a hand dismissively. "Ah, my dear companions, I'm afraid I can't tell you."

A stunned silence filled the air.

Velzard's eye twitched. "What do you mean you can't tell us?"

Veldanava smirked. "Exactly that. I won't tell you."

Velgrynd frowned. "Veldanava, that's not an answer."

Rudra crossed his arms, his emperor's pride slightly irritated. "Do you at least trust him?"

Veldanava let out a warm laugh, nodding. "Of course. I wouldn't have allowed him to interfere otherwise."

Velzard, deep in thought, turned away for a moment, recalling what had just happened. She could still hear that whisper in her ear. Let me handle this, princess. Don't sully your beauty.

Without realizing it, a faint blush spread across her face.

Velgrynd immediately noticed and raised an eyebrow. "Velzard… Why is your face red?"

Velzard, caught completely off guard, jumped in surprise. "W-what?! It's not red!" She instinctively covered her face with her hands.

Velgrynd smirked knowingly. "Ohhh? It is red. I've never seen you flustered before, dear sister."

Guy, never one to let an opportunity for mischief pass, leaned in with a devilish grin. "Now this is interesting. The Ice Empress herself, blushing?"

Velzard turned to Guy with a glare that could freeze a continent. "Shut up, Guy."

Dino, suddenly interested, whistled. "No way… Don't tell me… You have a thing for that mystery guy?"

Velzard's eyes twitched. "No!"

Feldway smirked. "You definitely do."

Velgrynd tilted her head, genuinely curious. "Wait, wait. What exactly did he say to you?"

Velzard turned even redder, now visibly flustered. "Nothing!"

Veldanava chuckled again, clearly entertained. "Ah, Velzard, it seems you've found something… interesting."

Velzard shot him a death glare. "You are enjoying this way too much."

Guy shrugged. "I mean, can you blame him? It's rare to see you flustered."

Velgrynd smirked. "You have to tell us what he said."

Velzard groaned, realizing there was no escape. "I said it was nothing!"

Rudra, ignoring their teasing, turned back to Veldanava. "So? What now?"

Veldanava stretched his arms. "Now? Well, I've sealed Ivarage, so that's taken care of. As for our mystery guest…" He smirked. "I suppose you'll just have to wait and see."

Velzard, still flustered, clenched her fists. "Tch… I will find out who he is."

Veldanava chuckled again. "I have no doubt."

As the others continued to banter and speculate, Velzard clenched her fists. That man—whoever he was—had left an impression on her. She wasn't one to let mysteries go unsolved, and she would get her answers.

Eventually.