Tensura React's to ???

AU CROSSOVER:Veldora:Reign of the Fallen Dragon-1

                         Prologue: Exile by Slime

"VELDORAAAAAAAAAAA!!"

The thunderous roar echoed across Tempest,rippling through realms as birds scattered,demons flinched and the skies trembled.Veldora Tempest,the proud Storm Dragon,currently sporting a ridiculous magical girl outfit and an oversized sparkly wand,paused mid-pose.

He blinked."Eh?Did I went too far?"

Behind him, three cities were partially on fire,a delegation from Blumund was fainting and Rimuru's prized paintings of Hinata and the other girls nake-*ahem* had all been turned into a glittering crater of ash.

Rimuru stood still,smiling.A calm smile.The kind of smile Gods wear before pressing the 'delete' button.

"Veldora~,"Rimuru said softly,"you're going on a timeout."

"Wha-Wait!Rimuru!Listen,I can explain-"

*Snap*

But the glowing portal behind him was already crackling with an ominous aura.

"NOOOOoooo-!"

WHOOSH.

Veldora vanished into the pitch black void devoid of any light.

Chapter 1:The New World Smells Like Shit.

He crashed hard.

The impact shattered a half-collapsed wall,the structure groaning in protest as rubble rained around him.Veldora coughed,waving dust from his face.The air was hot,metallic and kinda dark.

"Ugh....where in the big brother Veldanava did I land?"he grumbled,staggering to his feet.

THE CAVE WAS DARK BUT NOT SO DARK TO THE EXTENT OF BLINDING HIS VIEW.THERE HE SAW SOME SLIMES AND RABBITS LIKE CREATURES AND OF COURSE THEY DON'T LOOK FRIENDLY AT ALL.

Something approached him from behind.Veldora instinctively tried to use his skills but-

Nothing happened.

He froze.

"W-wait....where's my power?Why can't I use my Veldora Killing Arts!".

He tried to conjure a wind blast.Nothing happened.No magic.No skills.Not even a breeze of wind.

Then a small,cracked panel flickered infront of his face.

SYSTEM ERROR:INCOMPATIBLE DIVINE ENTITY DETECTED.SEALING EXCESSIVE POWER. INTEGRATION IN PROGRESS.

Remaining Sync Time: 11 years, 267 days.

"Oh,come on! Rimuru!!"

A puddle behind him bubbled.A tiny,translucent slime oozed into view.Veldora squinted. "You dare challenge the great-"

The slime leapt forward.

*BAAM*

Veldora went crashing to the wall pavement totally knocking him out cold

"That slime looked just like Rimuru......"

The slime jiggled in triumph.

Chapter 2:Welcome to the Queue.

A few days later,Veldora was all dirty,starving,had bags under his eyes from lack of sleep and had just been beaten by a slime in a F-Rank dungeon which he barely escaped.

He was standing in a line at a Hunter Registry Office-essentially a crumbling warehouse with flickering screens and overworked clerks.

Well the reason he was there is is because the first thing while starting a Isekai life is to eaitger go to the Adventurers guild or the Hunters guild to get a registration.