Origin of Evil

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

Shigaraki was surrounded by darkness, no matter where he look, he could only see pitch black and emptiness, He continued to stare blankly at the abyss of darkness which seemed to stared back at him, his mind was working, but he couldn't see, he couldn't hear, he doesn't know what to feel or what he's feeling right now, he couldn't smell anything and his sense of taste disappeared too as he couldn't even taste his own saliva, his 5 senses were working but at the same time it doesn't

Shigaraki soon felt his consciousness coming back at him as he slowly opened his heavy eyelids and saw a bright light "W-where am I...?" Shigaraki thought, he looked around and he saw that he was in an unrecognizable room which looked like an Hospital Room, he's silently observing his  his surroundings when he suddenly heard a voice

"So you're awake, Villain..." Shigaraki heard the voice and turned his head towards the voice's direction, his eyes widened from what he saw, it was 'that' man...

"You... YOU!" Shigaraki Instantly became angry the moment his eyes landed and recognized the man as he attempted to ran over to him "W-WHAT'S THIS?!" Shigaraki noticed that he couldn't move and saw how his body was chained and his two hands were bound by a Psychiatric Patient's clothes, he tried to Disintegrate the chains and the clothes that's bounding him but he was surprised when nothing happened, he then noticed that he had a Quirk Suppressing Collar on his neck...

"FUCK! I CAN'T EVEN USE MY QUIRK AND THAT FUCKING GUY IS HERE!" Shigaraki exasperatedly thought as he frantically kept squirming his body to try to escape while glaring at the man

"Don't even try to escape, If you do, you'll know what happen..." The man threateningly said while the man's eyes were narrowed at him, the man soon lifted his hand and Shigaraki saw the man was holding 'something' familiar...

"THAT'S...!" Shigaraki yelled loudly, his eyes widened when he saw what the man was holding in his hand "MY FUCKING HEART!" Shigaraki frustratedly gritted his teeth

"You get it do you? don't even think of funny Ideas like escaping, Villain..." the man said with a smirk as he began to squeeze his heart

Shigaraki was screaming in pain and could only grit his teeth, he couldn't even clutch his aching chest because his two hands were bounded "THAT BASTARD! I'LL KILL HIM! I'LL FUCKING KILL HIM!!!" Shigaraki angrily swore in his heart, the pain was unbearable and his consciousness was slowly fading, his ears were ringing and everything was starting to become dark again, his body was losing its function but his mind was wide awake, he slowly lose his consciousness but his mind started to remember everything...

Flashback begin

"Evil isn't born, it's made"

When Shigaraki was a child just like every other children of his age he wanted to become a Hero

Shigaraki loved Heroes when he was a kid but he couldn't even express his love for them freely because of his abusive Father's rule, Any talk of Heroes was forbidden in their Household, His Father was abandoned by his Mother who was a Hero and because of that his Father came to hate all Heroes alike

But he didn't let his Father's hate for Heroes hinder him for becoming one, he always wanted to become a Hero who saves the day from terrible Villains after all, he only needed to wait for his Quirk to manifest so that one day he could save people using his Quirk!

He waited and waited but his Quirk just didn't manifest... When his Father was Informed that his Quirk isn't showing up, he became even more aggressive to him, saying that he shouldn't even thinking about being a Hero and one day when his Father heard that he got in trouble for playing Hero, his Father hit him, scolded him, punished him and discouraged him that he won't be able to become a Hero

Shigaraki took all his Father's scoldings, the punishments and pain as he began to wonder, Shigaraki didn't understand why his Father hated Heroes so much, why his Father always hits him when he simply utters the word 'Hero' in his Father's presence, Shigaraki thought that his Father simply hated him but his Mother reassured her that that wasn't the case so he believed her

One day, Shigaraki and his sister went to his Father's Office, which they were strictly prohibited to come in to, Shigaraki and his sister discovered a photo of his Father when he was a child and their Grandmother and they found out that their Father's Mother was a Hero, Shigaraki was happy when he found out that he was a relative to a Hero and made a promise with his sister that they'll become Hero Siblings one day

Shigaraki was happy, he doesn't know the reason why his Father hates Heroes so much and why his Father always tells him not to be a Hero but Shigaraki was motivated to become one now that he had found out that there's a Hero in their Family, he's happy.

But that happiness was short lived... and everything changed when 'that' day happened.

His Father came home and was livid when he found out that he had snucked into his Office, Shigaraki's eyes widen as he saw the look on his Father's face on that day... his Father was furious, his Father's piercing gaze stabbed him like a needle

Shigaraki was covered in bruises and was cowering in fear when his Father finished punishing him, he was frustrated and started to cry beside Mon-chan their family dog

Shigaraki hated it, how his Father always hit him, he hated the feelings of itchiness on his neck, he hated how he lives constantly getting punished just for talking about something that he loves, he hated how helpless he was, he hated how weak he was, he couldn't take it anymore... he hated everyone... and Shigaraki came to hate Life itself

Shigaraki embraced the dog by his side and Mon-chan died... Shigaraki eyes widen in horror as he saw the bloody remains of the once alive Mon-chan, his eyes became wider when he saw his sister was approaching him

Shigaraki tried to scream out but his voice wouldn't come out of his mouth... his sister came to apologize to him but was frightened when she saw the remains of the dead dog by his side and let out a loud shriek and started to run away

But Shigaraki was desperate as he tried to scream for help but no word would come out of his mouth, he ran crying as he tried to clung onto his sister but the moment he touched her, she died...

Shigaraki saw how his sister's life crumble in front of him, he started to cry loudly and puked, he couldn't even think straight and didn't understand what had happened but he knew what he did

He killed them.

Shigaraki's bloodcurdling weep was heard by his parents and saw him crying with the bloody remains of his beloved sister and dog, his Grandparents was filled with terror at the sight but his Mother was the only one who tried to reach out for him

Shigaraki was bawling but as soon as he saw his Mother, he thought that everything was going to be okay...

He stretched his hands out to reach for his Mother but the moment his hand touched the ground, it crumbled and the crumbling ground soon reached his Grandparents and Mother and they died...

His Father came outside because of the commotion and saw him in a puddle of blood, Shigaraki then saw his Father, his Father's expression was that of fear, which Shigaraki saw and the moment he saw his Father's terror-stricken face he felt something he had never felt before... Shigaraki stretched his hands and called out to his Father and began to apologize but his Father didn't held his hand out to help him but instead to hit him again...

That hit was the last straw... With the purpose of killing, he touched his Father and screamed out for him to die...

Shigaraki was grinning as he continued crumble the ground where the remains of his Father laid, he discovered that he enjoyed doing it, Killing gave him pleasure, It gave him the feeling of maddening ecstasy, It was addicting...

Somewhere within Shigaraki's heart, he always wished for something like this to happen, Shigaraki stood up with a wide deranged grin on his face, he was on cloud nine as he observed the destruction he had caused.

On that day Evil was made... the feelings of Itchiness on Shigaraki's neck finally went away... and thus began the 'Decay'

Shigaraki ran away but the guilt soon followed, he tried to call out for help but not a single sound came out of his mouth, he tried to stretch his hand out but no one grabbed it, the people around him could only watch and turn their heads to ignore him, he had his hand stretched out and was desperate for help... no one held his hand, except for 'him'

It was then that he met the only person who would help him, his Sensei, someone who will change him forever, someone who helped him and gave him a purpose in Life, his Sensei who's a Villain...

It's Ironic how a Villain would be the one who's offered him a helping hand...

His Sensei gave him food, shelter, new clothes, new name and his family... the only remains of his deceased family were their Hands, Shigaraki wore his dead family's hands around him to symbolize his transformation to Tomura Shigaraki, the name his Sensei had given to him...

Shigaraki's guilt and worries were gone and he was happy again that he met his Sensei.

But the feelings of Itchiness returned... he wanted for it to stop but he knew how... Killing, Destruction and Chaos, the feelings of itchiness on his neck seemed to stop every time he does these things...

Shigaraki's heart was beating fast and felt familiar, the beating of his heart were the similar feeling that he felt when he saw his Father's face filled with horror, Shigaraki's eyes widen in realization, he now understand what he's feeling right now, It was excitement because he was enlightened

"I see... so all I truly wanted to do... Is to destroy." that was Shigaraki's realization.

Flashback end

Location: ???

The cold evening wind was freezing as the darkness of the night swallowed everything, the moonlight was obstructed as the dark clouds overcast the night sky...

In the depths of a desolate place devoid of light and hope, and in a dark room All for One began to formulate a plan while he was being tend to by his Doctor, Kyudai Garaki, along with them was Dabi and Spinner who was watching Hero News

"All for One... are you really sure? since all of the High-Ends I made were captured, I currently have no Nomus that I could dispatch with you" Garaki told All for One with a hint of uneasiness in his voice

"It is fine Garaki-Sensei, Invading Tartarus right now would pose no problem for us" All for One simply said, All for One and Garaki soon heard a loud yell coming from the direction of the two League of Villain members

"IT'S THEM!" Dabi and Spinner loudly exclaimed in unison which gained the attention of All for One and Garaki

"Shut up damn brats! what is it?!" Garaki grumpily said annoyed at the two who suddenly shouted

"JUST LOOK AT THE T.V AND SEE THE NEWS!" Spinner yelled out while pointing at the T.V, All for One and Garaki soon turned their heads towards the T.V and saw the news

"Hey Old Man! It's those two! they were the ones who hindered us from killing All Might on that forest!" Dabi yelled out while pointing at the T.V

"Its true! Look!" Spinner exclaimed loudly as he saw the two men on the T.V screen

"THEY STOPPED A GIANT VILLAIN BY THEMSELVES! IS THIS THE START OF THE EMERGENCE OF THE TWO NEW FUTURE TOP HEREOS?"

The Female News Reporter announced the details of what had happened during the Giant Villain's attack and showed a picture of the two mysterious men that the League of Villains fought at the Joint Training Camp Forest

All for One quietly observed the two men on the news with a calculating glare

The first man was a tall man who wore a White Fur Hat with black patches and wielded a Sword and the second man was a man with average height who wore a Straw Hat

"So that's them..." All for One quietly uttered, but behind his voice was a unbridled rage and anger as his scar tissue covered eyes glared at the screen "I will pay them back someday... but after we recovered Shigaraki and the others"

All for One slowly raised from his hospital bed, removed his breathing mask and looked at Dabi and Spinner

"Dabi, Spinner Let's go... to Tartarus, To Tomura..." All for One's commanding voice uttered as he and the boys prepared to leave and Invade the Impregnable prison.

(Sorry for the late update I was really busy and this chap was probably the hardest chap that I've written and it took quite some time to finish it)