The Greatest Assassin Gets Reincarnated in Tensura

The battlefield was in chaos.

Clayman's puppet army, led by his Five Fingers of Death, continued their unrelenting assault. Carrion's beast warriors responded with savage fury, clashing with the mindless horde in a spectacle of sheer brutality.

Above them, Frey's harpies and wyvern riders rained destruction from the sky, striking at both armies with calculated precision.

The war had truly become an all-out three-way conflict.

But now, it was spiraling out of control.

In Jura Tempest, the air was tense.

Rimuru, informed by his subordinates, had already begun preparations.

Tempest's borders were reinforced, and his forces were on high alert.

He was not one to rush into conflict without reason, but he knew—if this war spilled over into his lands, he would have no choice but to step in.

For now, he watched and waited.

Meanwhile, Demon Lord Milim Nava was itching for battle.

She paced back and forth, her hands on her hips, thinking aloud.

"Hmm… Who should I fight?"

Frey was her friend, so attacking her wouldn't be fun.

She didn't dislike Carrion, and his warriors were strong—which meant they could be fun to fight, but…

Clayman?

Her eyes lit up.

"I don't like that guy!"

Then, an idea sparked in her mind.

Disguise!

She could disguise herself and attack Clayman's forces from the shadows.

Grinning to herself, she started thinking about what kind of disguise to wear.

Midray, her loyal Dragon Priest, stood nearby, watching in growing horror.

"Milim-sama… I beg you, don't go."

She turned to him, pouting.

"Why not? It'll be fun!"

Midray sighed, pinching the bridge of his nose.

"Because you'll get carried away and destroy everything."

Milim crossed her arms, puffing up her cheeks.

"Hmph! I'll be careful… probably."

Midray knew that if Milim got involved, the entire battlefield might be wiped out in an instant.

He had to stop her somehow.

Far away, seated upon his frozen throne, Demon Lord Guy Crimson observed everything through his magic vision.

The war was escalating too fast.

Destruction was spreading too far.

And balance—the very thing he was tasked with maintaining—was in danger.

He exhaled slowly, tapping his fingers against the icy armrest of his throne.

"Tch. This is getting out of hand."

He wasn't one to interfere without reason, but this?

This was becoming a catastrophe.

And if he let it continue, the world's balance would tip too far.

He rose from his throne, his crimson aura flaring around him.

Misery and Rain, his two aides, appeared beside him.

"Are we stopping them, my Lord?" Misery asked, a calm smile on her face.

"Obviously," Guy replied, stepping forward.

With a flick of his wrist, he ripped open a portal straight to the heart of the battlefield.

On the battlefield, everything was chaos.

Then—

A blinding red light filled the sky, and the air itself seemed to freeze.

The temperature plummeted.

A howling wind swept across the land as a rift in space tore open above the battlefield.

And from within it—

Guy Crimson descended.

His presence alone shook the very fabric of the world.

The fighting stopped instantly.

Every warrior, every monster, froze in place.

Clayman's puppets ceased moving.

Carrion's warriors stopped mid-charge.

Frey's flying troops hesitated in midair.

A crushing aura of absolute power pressed down on everyone.

Then—

BOOM!

With one step, Guy landed on the battlefield, the ground cracking beneath his feet.

His golden eyes swept across the stunned warriors.

His voice, cold and sharp, echoed through the battlefield.

"That's enough."

No one dared to move.

No one dared to even breathe loudly.

Because they knew.

This was Guy Crimson.

The strongest of the Demon Lords.

The Crimson King.

The one who stood above all others.

And if he said the war was over, then it was over.

Guy turned his gaze first to Clayman.

"You."

Clayman flinched.

"You've been scheming too much. I should kill you right now."

Clayman gulped, his face turning pale.

Then, Guy's eyes moved to Carrion.

"You're strong, but reckless."

Carrion clenched his fists, but did not argue.

Finally, Guy turned to Frey.

She met his gaze without flinching.

"And you."

A small smirk played on his lips.

"You were playing them both from the start, weren't you?"

Frey remained silent, but the corners of her lips twitched upward.

Guy sighed.

"You're all annoying."

Then, his golden eyes glowed.

"This war is over. If any of you disobey… I'll erase you myself."

None of them dared to oppose him.

The war had ended in an instant.

Not by battle.

Not by diplomacy.

But by the will of the Crimson King.

In the heart of my Eternal City of Nights, where the sky was forever shrouded in a beautiful mix of twilight and midnight, I sat in one of the finest restaurants, enjoying an exquisite dinner with my lovers.

The grand establishment was built at the highest point of the city, with massive enchanted windows that showed the perfect nightscape of my domain. Below, the streets glowed softly with an eerie yet elegant luminance, filled with life and movement.

Yet, our attention wasn't on the breathtaking view of our city.

No, we were far more entertained by the spectacle unfolding before us—the war between Clayman, Frey, and Carrion, which had just been shattered by Guy Crimson's arrival.

A massive floating projection hovered above our private dining table, showing every detail in crystal clarity as if we were there in person.

Velzard, sitting beside me, took a slow sip of her crimson wine, watching the battlefield as Guy made his dramatic entrance.

"Well, well… the Crimson King finally decided to stretch his legs," she mused with a smirk, resting her chin on her hand.

Testarossa, elegantly cutting into her perfectly cooked steak, smirked slightly. "Took him long enough. If I didn't know better, I'd say he was waiting for things to get interesting before stepping in."

Ultima, munching on a roasted leg of some exotic beast, laughed. "I kinda wanted to see what would've happened if Milim joined in! She was this close to causing absolute chaos."

Carrera, swirling a glowing ether cocktail in her glass, chuckled darkly. "I would've bet on Milim wiping out Clayman's entire army in a single hit. That would've been hilarious."

I leaned back in my chair, smirking as I watched Guy's aura suppressing the entire battlefield.

"Tch, and here I was hoping they'd keep fighting a little longer. I wanted to see who would betray who first."

Velzard arched an eyebrow. "You already knew Frey was using them both, didn't you?"

I gave her a smug smile. "Of course. But I wanted to see just how far she'd push them before pulling back."

Testarossa sighed, shaking her head. "Frey's smart. She played her role perfectly. But in the end, none of them had a chance the moment Guy stepped in."

On the projection, Clayman's terrified face was priceless.

Ultima giggled, pointing at him with her fork. "Look at Clayman! He's trying so hard not to piss himself."

Carrera laughed. "Guy should've just squashed him already. Why is he even giving them a warning?"

I took a sip of my drink, watching as Guy delivered his final verdict, ending the war with nothing but a few words.

"Because that's his style. He lets them think they have a choice."

Velzard smirked. "How merciful."

As the war officially ended, the battlefield was left in absolute silence.

Guy had left, Clayman was barely holding himself together, and both Frey and Carrion were calculating their next moves.

The projection flickered and zoomed in, showing Milim, who had been watching the whole thing from a distance with a look of disappointment.

Ultima pouted. "Aww, poor Milim. She didn't get to fight anyone."

Carrera shrugged. "She'll get over it. Besides, now she's gonna start poking around for something else to destroy."

Testarossa smirked. "Which means we might have to deal with her soon."

I chuckled. "That's the fun part."

Velzard sighed, setting down her wine glass. "So, what's next? This war was entertaining, but I doubt the world will stay quiet for long."

I leaned forward, a devilish smile creeping onto my face.

"Oh, we're just getting started."

Our dinner continued, filled with laughter, conversation, and the satisfaction of knowing that we had seen, manipulated, and enjoyed every moment of the chaos.