The Darkness the Evil bears

I do not own One Piece and BNHA! ALSO! this is my first story so criticisms are fine uwu

"Luffy best boi" - Talking

"Luffy best boi" - Thoughts

Luffy best boi - Sentences

"LUFFY BEST BOI" - All Might Muscle Form, Anger

The Unknown Hospital

The sudden chilling whisper of the deep voice in his ear made Izuku flinch as sweat began to form on his forehead, he didn't even need to think of who the owner of the said voice is as he instinctively jumped away from All for One, the Arch nemesis of All Might and the biggest threat to Japan's peace

"He managed to sneak up one me?! but how? I even have my Observation Haki and 'that' Quirk activated!" Izuku thought as he cautiously observed the said Villain

"Hey hey, that's quite mean of you to run away from me during our first meeting" All for One said, Izuku glared at the man defiantly despite the boy shaking from fear and anxiety which intrigued the Villain

"Even though you're shaking and weak you're still going to oppose absolute power... what is it that drives you, Midoriya Izuku?" All for One asked to the Green Haired boy who took a deep breathe to calm his nerves before answering...

"IT'S BECAUSE I'M A HERO" Izuku declared with a voice full of confidence which made All for One smirk, if he was the the Darkness who seeks to rule and destroy everything he pleases then the boy in front of him is the Light the one who protects, preserves and perseveres, they are each other's Antithesis

"A Hero exists for the sake of others"

"AS LONG AS I SEE SOMEONE WHO NEEDS HELP I WILL NEVER HESITATE TO LEND A HAND AND SAVE THEM, IF THERE'S A VILLAIN THREATENING TO DISTURB THE PEACE THAT THE HEREOS MAINTAIN THEN I WILL DEFEAT THEM, THIS IS WHAT ALL MIGHT AND A CERTAIN SOMEONE TAUGHT ME!" Izuku added, his speech for being a Hero made All for One giggle which slowly turned to laughter...

"HA HA HA HA, I see... so the reason why you're a Hero right now is because of All Might huh... I'm really not surprised, after all he's the reason why you have a QUIRK." All for One menacingly said which made Izuku flinch his eyes never leaving the Villain

"So you knew that I'm the current bearer of One for All..." Izuku said while cautiously eyeing All for One, if All for One somehow got hold of One for All then the current peace that All Might and the other Hereos maintained will be ruined and Japan will be plunged into hell...

"Not necessarily, you just confirmed it yourself..." All for One grinned at him which made the boy gasp

"SO HE TRICKED ME ON SAYING I HAVE ONE FOR ALL, GODDANGIT IZUKU" Izuku mentally scolded himself for falling into the Villain's trick

"So that's the reason why I didn't get it from 'HIM' is because he gave it to you instead..." All for One said which piqued the young Hero's curiosity

"W-what do you mean by that?" Izuku asked to the Villain, deep in his heart he already knew the answer but his mind refused to admit it... with All Might's sudden disappearance and All for One mentioning the very Hero to him...

"If I didn't get One for All from All Might himself then I figured that he must've gave it away already... and you just confirmed it, Midoriya Izuku, although I already know..." All for One grinned as he raised his hand and snapped

"Bring him in..." All for One said as Izuku heard sounds of walking getting near them and revealed the Villains Dabi and Spinner, Izuku's anxiety rose thru the roof as he saw the person that the two Villains bought with them...

"A-ALL MIGHT?!" Izuku yelled desperately as he saw his Idol, All Might looked beaten and was covered in wounds and bruises, his Iconic Idol Costume was burned and in tatters, he was also wearing Quirk Suppressing Cuffs which are most likely put into him by the Villains.

"Don't worry lil bro, the Old Guy's just unconscious... did you know how much I had to endure not to KILL HIM?" Dabi maniacally said to Izuku who only glared at him silently

"I will have you return our Allies back to us as well Kid." Spinner added while also glaring at the boy

"So what will you choose Midoriya Izuku... will you give One For All and I will let All Might live or will you continue to oppose me and you will become the very reason that the Symbol of Peace gets killed, choose carefully" All for One said with his deep mocking voice, Izuku's mind was going thru the 5 stages of grief right now, he didn't want to accept that his Idol was defeated by All for One.

Despite Izuku being overtaken by fear and anxiety the emotion that he felt in his heart the most is anger, the young Hero clenched his fist and bit his lip, he's in front of the most dangerous Villain alive along with 2 Top-tier Villains while he's all alone...

"I don't care If I die as long as I can save All Might it will be fine in the end...!" Izuku made up his mind as he glared at the Villains with defiant eyes and seeing this made All for One smirked, he knew that the Young Boy in front of him is going to oppose him until the end so giving him a choice is pointless

It seem like you made up your mind, so you will continue to oppose me until the end, very well... I WILL PERSONALLY KILL YOU AND STEAL ONE FOR ALL TO YOUR CORPSE, MIDORIYA IZUKU!" All for One hollered as he put his hand to his mask, the mask slowly disintegrated and it revealed the face of the Symbol of Evil...

"Y-you... your body was severely damaged according to All Might... so how come..." Izuku couldn't hide his surprise as he saw All for One, the Villain who is supposed to harbor the scars and damages during his battles with All Might are nowhere to be seen in his face and body.

"Ah this? this is the effects of the 'Rewind Drug' that the esteemed Dr. Kyudai Garaki prepared for me..." All for One explained while smiling menacingly

"Rewind?!" Izuku gasped "so that Drug is made based on Eri's Quirk?!

"I needed to take the Drug Immediately because I know that All Might somehow got his former strength back but I couldn't believe that it was actually easy for us to deal with him that I don't think I even needed the Drug to beat him" All for One explained to Izuku who gulped at this

"So basically, All for One is back at his prime right now, All Might is unconscious and I didn't call for any help, I don't think I'll be able to escape here alive..." Izuku frantically thought before he looked at All Might again who's still unconscious

"But if that truly is the result of the effects of Rewind then surely..." Izuku peeled his eyes away from his Idol before looking back at the Villain who is still smiling

"Correct, I will someday cease to exist... the Drug is not perfect and the effects of Rewind is inevitable" All for One said admittingly with a solemn expression solemn face but it soon turned to maniacal

"Which is why I must destroy everything before I vanish... the peace that All Might maintained for so long, the unjust society that created every Villains, I must destroy the very society that caused every pain, suffering and inequality... I am different from Shigaraku Tomura who's only desire is destruction, what I desire is Destruction AND Reformation..."

"I WILL CREATE A SOCIETY AND RULE IT AS A DEMON LORD" All for One declared, his crazed eyes seemed devoid of light and no rational thinking is left on his head "A Society where everyone is equal... Isn't that the kind of society that you Heroes wanted?"

"A SOCIETY CREATED BY A DERANGED VILLAIN LIKE YOU WILL NEVER MAKE ANYONE HAPPY, PEOPLE WILL LIVE IN CONSTANT FEAR OF YOU AND THEY WILL NEVER BE ABLE TO SMILE AGAIN!" Izuku angrily screamed at All for One who only shook his head at the young boy

"It seems like our views on society doesn't match but it does not matter, after all... you will join the former holders of One for All soon..." All for One silently said but was still audible for Izuku before surprising the boy by lunging at him at an alarming speed

"RETURN MY BROTHER'S QUIRK TO ME AND DIE, MIDORIYA IZUKU!" All for One summoned appendages in his body while also coming at Izuku with his palms open in an attempt to decay him

But Izuku was strangely calm in a situation where he's about to fight possibly the greatest Villain that he'll ever face, a Villain that managed to beat All Might, the strongest Hero in his eyes.

"That's right, I'm actually not alone... in this battle, I have you guys with me"  Izuku closed his eyes as he thought deeply

"Yeah you can count on us, Ninth!"  the voice of 7 different people responded to his inner thoughts which made Izuku smile with confidence and ease

"Sixth, Full Blast!" Izuku said as his whole body and the area around him was immediately engulfed with purple smoke that hindered All for One, Dabi and Spinner's visions, this also stopped AFO's approach and made his guard rise

"The Sixth One for All user's Quirk Smoke Screen huh... but It does not matter because I have loads of Sensory Quirks to find you" All for One activated the Sensory Quirks that he stole Including 'Search', the Quirk of the Hero Ragdoll, the Sensory Quirks of AFO tried to find the young Hero but was unsuccessful

"I CAN'T FIND HIM, WHERE THE FUCK DID HE GO?!" All for One was losing his patience as he continued to look thru the purple smoke screen "DABI EXTINGUISH THIS PESKY SMOKESCREEN AT ONCE" All for One ordered to Dabi who clicked his tongue

"YOU DON'T HAVE TO TELL ME THAT!" Dabi screamed at the Villain he was about to activate his Flames but was suddenly grabbed by something...

"T-the fuck is this?!" Dabi said as he saw that his hands and torso was tied by a Black rope-like object which caught him by surprise

"GEAR SHIFT!" Izuku pulled himself out of the smoke with the use of the Second One for All user Kudo's Gearshift and accelerated at Dabi who is still struggling to free himself on his Black Whip, Dabi was about to engulf himself with his flames to try and burn the Black rope that binded him but he was suddenly pulled by Izuku using the Black Whip that the young Hero tied to the his Torso and prepared to launch an attack...

"Armament Hardening! 20% Detroit Smash!" Izuku's Haki covered and OFA amplified fist connected to the Flame Villain's Abdomen which sent Dabi flying straight to the hard wall

"DABI! WHY YOU LITTL-" Spinner surprised and was caught of guard of the Young Boy's sudden attack towards Dabi and was too late to pull his Knife out of its sheath as Deku was already in front of him

"Although the Kinetic Energy that I charged up isn't enough I'll release it now"  Fa Jin plus Armament Hardening, One for All 30% Detroit Smash!

Deku managed to land a solid hit at the Mutant Villain who also sent him flying a couple of distance away

Izuku then quickly went to All Might's side and broke the Quirk Suppressing Cuffs that binds All Might with his raw strength then deactivated his Smokescreen to cautiously observe All for One next move

"So you ran around the smokesceen to buy some time to store Kinetic Energy inside you so you can release a more powerful attack using the 3rd One for All user's Quirk huh... as expected of the boy that All Might chose" All for One calculated and give praise to the young boy

"So you still prioritized on saving someone instead of running away or facing me, you truly a perfect example of Heroism, Midoriya Izuku..." All for One said with a smile before in turned into an evil grin

"But so what If you managed to saved All Might? you will never be able to escape while carrying that DEAD WEIGHT you know? and even If try to face me you'll never be able to beat m-"

"YOU'LL NEVER KNOW THAT UNLESS I TRY!"

All for One's dialogue was suddenly cut of by the young boy's loud voice

"All Might entrusted me this power so that I'll be able to face and stand up to you one day, If I ran away from here then you will continue to cause pain and suffering to others! that's why...

"I WILL BEAT YOU HERE RIGHT NOW!"

All for One could only give a silent glare towards the declaration of the boy that continued to defy him, his memory taking him back to the times when the past One for All users opposed him too despite being weaker than himself...

"So you choose to continue to struggle until the end, Hero? very well, I WILL SEND YOU TO HELL IN THIS VERY PLACE THAT DECLARED YOU AS QUIRKLESS!" All for One menacingly said with a grin, AFO fully exerted the power of multiple Quirks on his body and his 'demonic aura' to try and demoralize Izuku but it never unnerved the boy

"BRING IT ON ALL FOR ONE, as of now... with these Quirks and the different types of Haki that I learned from 'them', I FEEL LIKE I CAN'T LOSE!" Izuku confidently said while grinning

I will try to update consistently from now on :3