Reborn In Black Clover With Demon Slaying Magic

*Sigh*

'I expected this to happen but still... Luck totally stomped them. And to make matters even worse, I know this guy is only using his body, but technically Luck just beat the most competent members of the Black bulls all by himself. And Asta? What the hell happened to him in the time I was unconscious? I don't know how he did it but, he somehow managed to somewhat keep up with Luck at that speed. But he clearly wasn't that fast the last time I saw him fight... Is it that sword new he's holding? I know his swords are sėnsɨtɨvė to magic and all, but this is insane! And why does it look like the one Licht was using when he fought against me?'

Standing in the air, Grim watched as Lufulu beat the ever living shit out of Asta, Magna and Vanessa in one of the most humiliating ȧss whoopings he'd ever seen.

Not that it was a surprise or anything. Afterall, out of everyone here Luck was the one who had sparred with him the longest causing his power to skyrocket compared to someone like Magna who had never fought Grim once. Adding the elven power from the reincarnation magic was honestly overkill.

Not to mention that just like Grim, Luck's body also had the abilitiy to surpass its limits during battle and grow stronger. With all that being said, the battle was over before it even started. And not even with the addition of Asta could change that.

'Shit, he might actually kill them at this rate.'

---

"AHAHAHAHA!! Is that all you have?!! So much for your unbreakable bonds!!"

With Vanessa, Magna and Asta down for the count, Lufulu who was covered in his lightning armour mercilessly stomped down on Magna's ċhėst with enough force that it almost made it cave in.

"GYAHHH!!!"

Stompping down repeatedly, Lufulu's maniatic laugh resounded out as a small crater formed beneath Magna's body. And to make it even worse, every stomped sent a powerful current of paralyzing lightning into his body.

"L-Luck-

*BANG!!*

"HE'S GONE!!" Lufulu laughed stompping down on his ċhėst again.

"Stop it LUCK!!" Asta screamed doing his best to crawl to his feet.

"Oh?" Lufulu tilted his head to look at him before a giant smile spread across his face and his figure disappeared in a flash of blue lightning.

*ZAP*

Watching the lightning covered claw reaching towards his face, Asta felt his eyes go wide as he realized that he couldn't stop it.

'I-I can't stop him...'

"DIE YOU FILTHY HUMAN!!" .

With lightning crackling around his arm, moments before he ripped Asta's face to shreds, a sudden eruption of strange mana forced him to stop and retreat as the area he was standing in suddenly transformed into a smouldering mess of blue flames.

"Who?"

"Did you really think I'd let you hit me without paying you back in kind?"

Hearing the voice, Lufulu's head snapped upwards and grit his teeth with rage.

"YOU!!"

"Yo." Grim smiled as he descended down from above and landed in front of Asta.

"HALF-BREED!!" Seething with rage, the amount of killing intent on Lufulu's body increased by a disgusting amount as his eyes turned bloodshot.

'Damn, elves really don't like mixing bloodlines with human huh.'

"G-Grim..." Asta said with a shaky voice as the white haired invididual landed in front of him. The last time he saw him, Licht had slammed him into a wall and he, Yuno and Mimosa had been blasted out of the base with Grim's condition left unknown to them. By the time they came to, Mimosa was acting hysterical wanting to go back to save him. If it weren't for Nozel who had arrived to meet them and remind her of her duty as a magic knight, she probably would have gone back by herself.

"Y-You're alive!!" He said in an almost sobbing tone.

Turning his head to face him, Grim gave him a weird look.

"Did you kill me off or something?"

"What? No! Its just-

As the two proceeded to have a whole conversation on how Grim survived being left alone in a base full of individuals who seemed to have an especially strong hatred towards him, the lightning aura arounnd Lufulu's body started to spike as he suddenly shot forward.

"HALF BREED!!!" He screamed.

*FWOOSH!!*

Closing in on him, just as he was about to strike, the sudden eruption of blue flames around Grim's figure was strong enough to blow him back.

*BOOM!!*

"URGHHH!!!" Asta covered his face as he was also thrown back from the force.

"Yo Asta, its been a while since me and Luck have caught up, so do me a favor and chill out for a bit okay?"

"But that's not-

"Asta." Grim called out with killing intent mixed into his tone.

!!!

"I said me and Luck have some catching up to do."

"R-Right."

Sensing that Grim wouldn't take no for an answer, Asta had no choice but to nod his head and try to regain his stamina.

"Just... Don't kill him, Luck's still in there."

Nodding his head in confirmation, Grim's eyes focused on Lufulu.

With lightning and blue flames wrapped around each figure, the grimoires of the two snapped open as the two sprung into action!

*BOOM!!*

Kicking off the ground with an insane amount of explosive force, both boys transformed into a bolt of lightning and a plume of blue flames.

*BANG!!!*

"S-Such force!!!"

Clashing head first into the other, the force generated from the two was powerful enough that the surrounding area was blown away and turned into a wasteland filled with scorching blue flames and random crackles of lightning.

Watching with her mouth open wide, the sight of the mere clash between these two sent Vanessa into a state of panic as she saw the destruction brought about by a single exchange.

'Monsters... They're monsters!'

---

*Swish!!*

*Swish!!*

Dodging Grim's flame covered sword, Lufulu kept his arms close to his body like a boxer and countered with a bunch of well timed jabs that Grim narrowly managed to evade while backing away.

"HAHA! YOU'LL NEVER HIT ATTACKS THAT SLOW!"

'Is this Flash wannabe bitch mocking me!!'

[Breath of Wind]

Changing to a more agility based style, the hue around his figure transformed from a blazing blue to a soft green as he struck down with a violent strike.

"What the-

[Claw Purifying Wind]

!!!

Watching the four vertical claw-like slashes crash towards him, Lufulu did the smart thing and zapped out of there.

*SLASH!!*

"Tch, running away now!"

"Who said anything about going away?!"

Just as fast as he had disappeared, Lufulu's lightning cloaked figure came racing back towards Grim.

*ZOOM!!*

[Dust Whirlwind Cutter]

*SWOOSH!!*

Surrounding himself in a tornado of violent wind, Grim used the spell to launch himself up into the air moments before Lufulu's grabbed him.

[Breath of Blue Flames: 9th Form - Rengoku]

Slashing down without any hesitation, a beam of elven powered flame magic came crashing down.

Seeing the beam of concentrated fire descend towards him, an insane amount of lightning magic gathered around Lufulu's hand as he took on a throwing stance.

[Lightning Creation Magic: Thunder Arrow]

*FWOOSH!!*

Throwing it with enough speed and power that the arrow basically transformed into lightning itself, once the two spells finally met, the amount of destruction it wrought was terrifying.

At first there was silence like the world had forgotten the meaning of sound. But then, it happened.

An explosion of fire and lightning so large that it drew the attention of every elf and magic knight in the capital.

"URGHHH!!!" The impact of the spells colliding together sent gusts of violent wind in every direction as Grim and Luck proceeded to continue swapping blows with the other.

*SWOOSH!!*

*SWOOSH!!*

*SWOOSH!!*

Dodging Lufulu's fists, Grim surrounded his body in wind magic and just like he did with the [Air Bomb] technique he created, he suddenly exploded the wind around him outwards.

"ARGHHH!!!" Not expecting such a development, Lufulu's body was blown back from the shockwave.

[Breath of the Blue Flame: 1st Form - Unknowing Fire]

Not willing to give him the time to recover, Grim activated his spell and flashed right in front of him.

[Breath of the Beast: 2nd Fang - Rip and Tear]

Materializing both beast swords into his hands, he performed a two diagonal slashes on Lufulu's ċhėst causing a sudden eruption of blood to spurt out of his ċhėst.

'He actually landed an attack on me!'

Feeling the sharp pain of his ċhėst being sliced open, the memory of the elf extinction flashed through his eyes.

"Never again... I WON'T LET YOU KILL US AGAIN!!"

'What the!'

As if becoming the main character, the mana around Lufulu's body started to fluctuate violently.

'His mana is becoming unstab-

*BAM!!*

Feeling a sharp stinging pain break out on his face, it took a moment for him to realize that Lufulu had just hit him.

'No way, I didn't even see his fist mo-

*BAM!!*

"Oof!!"

*BAM!!*

"Agh!"

*BAM!!*

"Gyah!"

*BANG!!*

Raining a barrage of lightning fast punches on his figure, Grim experienced what it was like to be a living punching bag.

'What the hell is going on?! My [Hyper Focus] can't keep up!'

*BAM!!*

"SLAUGHTERED!!"

*BAM!!*

"STEPPED ON!!"

*BAM!!*

"ERASED!!"

While he was wailing on him, Lufulu started speaking in a really dark tone.

"COMPARED TO MY RAGE-

*BAM!!*

YOU'RE BONDS ARE NOTHING!!"

*SWOOSH!!*

Striking another punch towards him once again, Lufulu's eyes went wide when he saw Grim raise his hand and actually grab onto his wrist before the punch could land.

'What!!'

"Lufulu? Luck? Whatever the fuċk you're calling yourself."

Holding onto his fist tightly, Grim's voice started to echo out in the quiet area as his grimoire floated next to him and started pulsing with yellow light.

"You seem to have the wrong idea about me."

*Clenches hand holding wrist*

"Bonds? Connections? I ain't fighting you for some basic ȧss reason."

'What's going on! HE SHOULDN'T BE ABLE TO MOVE AFTER TAKING ALL THOSE ATTACKS!'

*Badum*

!!!

'What was that! Why did this body suddenly get excited?!'

"Luck wasn't able to get me there with his own power, but to think that within this short exchange you managed to do something that he couldn't accomplish for months."

Feeling like something was wrong, Lufulu trusted his instincts and ripped his hand out of Grim's hand before jumping back.

'I hit him with enough lightning magic to kill a normal elf! How is he still standing!'

*Crackle*

'What the-

Standing with his head still bowed, sparks of yellow lightning snakes began to dance around his body.

Feeling the power of lightning coursing through his body, the sound of thunder rumbled in the air as he took a step forward in a slanted position and lowered his centre of gravity.

"You played your role well elf. Finding a lightning mage as powerful as you in this kingdom is really hard y'know. You taking over Luck's body is truly a blessing for me."

'A blessing? What's he talking about!'

*Manifests Thunder sword in its sheath*

"But your role is over now."

*Raises head to show off bloodied face and massive grin*

"Thanks for coming back to life just to make me stronger."

With the ground beneath his feet and his enemy in front of his eyes, he closed his eyes for the briefest second as his grimoire started shining with intense yellow light and crackling with lightning.

*Inhales Deeply*

"And fuċk your rage."

[Breath of Thunder: 1st Form - Thunderclap and Flash]