I was once weak

Summery: the story of a girl who once wanted to be a hero only to be betrayed by the world at every turn. Her mother and herself abandoned her father almost killed by the man who once she idolized and the boy who once terrorized her every day being praised and called a "hero" it was to much. This is the story of how Izumi Midoriya became the villain "Osore"

A/N: hello all! With this chapter we're back to he action. Hope you enjoy.

Disclaimer: I do not own my hero academia that would be Toho and Kohei Horikoshi. So please don't send lawyer at me or they will be shoot out of the lawyer cannon

Chapter 6

"I hope you don't mind me coming unannounced like this?" asked a man dressed in a dress shirt and slacks his black hair combed neatly, this man was Naomasa Tuskauchi a detective with the Tokyo police department. He sat down as he faced a man who could best be described as a human skeleton his eyes sunken in and had blond hair dressed in a similar manner to the detective this man was Yagi Toshinori or as he was known to the public: the symbol of peace: All Might as hard as that was to believe.

"Please, it's always a pleasure to see you, Tuskauchi" said Toshinori "How is the investigation going?"

"We're interrogating all the captured villains, but we're puzzled by one" said the detective his tone serious. "The one you fought, the villain's called him 'Nomu' "

"Hm, the strong bird guy." said Toshinori knowing who the detective meant

"We ran some tests on it's DNA" Naomasa stated.

"What did you find?"

"Firstly, we're not asking you to help us with the case. Technically, this is a leak." said the detective looking down before raising his eyes to meet his friend. "I just felt I owed it to you to let you know. It could lead us to the one in charge." this getting the pro's attention "After trying to interrogate Nomu several times, we came to the conclusion it's incapable of speaking. He won't react to anything, its as if he literally can't think for himself. No matter whats going on around him." with this the detective withdrew a mug shot of a man with blond hair and thick lips "As for his identity: we discovered he used to be a low-level thug with a record of assault and extortion."

"Why do you think this will lead to the mastermind behind the league?" asked All might already dreading the answer.

"Here is where it gets interesting." said Naomasa "Our analysis shows his genetic makeup has been drastically altered. Toshi, he had four different people's DNA.

"Is he even human anymore?" asked Toshinori.

"The transformation is the result of drugs and other unknown methods." Naomasa replied "To put it simply his body has been modified to be able to hold multiple quirks at once, his apparent lack of brain function probably comes from the burden that causes." said the detective before his tone becomes ominous "The real concern is he shouldn't have more then one quirk. His DNA still shouldn't give a person multiple quirks. Not unless it's completely integrated into someone's body." Naomasa's eyes narrowed with his next statement. "Not all quirks work like One for all. Maybe… there's someone out there with the quirk to pass on different quirks onto other people" hearing this made Toshinori's jaw to gape open and his eyes to widen in horror.

"It can't be!" Toshinori exclaims standing up.

"Given the evidence, its a reasonable conclusion. It's why I came I had to let you know immediately."

Toshinori approached the nearby window clenching his fist as steam began to poor out of him as he began to become larger becoming the visage of who everyone knew him to be "No, its not possible!" All Might growled as his mind went back to the young green haired woman at the USJ.

"Not when my father would be very disappointed. Given that you failed two years ago" the woman's words echoed in his mind as All might clenched his teeth.

"All for one" the hero growled now knowing without a doubt as much as he hated accepting the truth. All for one was alive and he had either brainwashed the girl or had indeed sired her and if so did she inherit his quirk?

Izumi was making her way back to the bar dressed in a crew neck shirt and a pair of shorts with a plastic bag in hand in it was several things that the girl needed for her evening that didn't have to do with villainy or training with her teacher it was meant for her to just be an ordinary teenage girl for once. At least that was the plan until she opened the door to the bar to find her teacher Chizome Akaguro aka stain having a stand off against Tomura.

"This 'league' you speak of Tomura Shigiraki, is merely the goals of a child who acts out for attention, there no point in killing without conviction" Stain stated with narrowed eyes as he took hold of a pair of his knives.

"What's the meaning of this?" demanded Izumi upon seeing the scene playing before her eyes.

"It's not your concern Midoriya" said the white haired man.

"I'm afraid it is" said the girl crossing her arms under her bust. "and I knew you'd eventually make a move like this."

"Izumi, your associated with this child?" questioned Stain as he gave the teen a side ways look.

"Unfortunately, yes he's a student of my father" said the girl "Don't bother wasting your time dealing with him, Chizome-sensei" said the girl.

"Sensei?" asked Tomura.

"So this is the one who you spoke of when it came to your training" said Kurogiri and though it wasn't visible the man was frowning as he had the hopes of using the hero killer to refine Tomura into a proper weapon for his master. Despite his disappointment in the situation concerning Tomura he was glad the girl found such a capable teacher.

"Chizome Akaguro." said the voice of Hiashi Midoriya surprising all pressent excluding the human Nomu. "I'm quite pleased that you took an interest in Izumi, this certainly explains her development since she obtained a teacher"

"And who are you!?" demanded the vigilante.

"I'm called All for one, I'm also Izumi's father" said the voice.

"I'm familiar with the name" the hero killer stated. "your power and reach is considerable and worthy of respect" with this Stain released his hold on his knives. "despite being a stain on society, who played a part in providing someone like Izumi to the world"

"I thank you for the respect you've shown to me but now I have a request to ask of you."

"What is it?" requested the vigilante with Izumi narrowing her eyes at the monitor she knew her father was observing them thru. She already had a suspicion of what he was going to request.

"My student Tomura needs someone to show him the path he must take in order to forge the future this world needs" Hiashi stated letting the statement rest confident the man would be able to understand what the request had.

"No" said Chizome flatly "That man is nothing more then a sadistic child any future he forges will be destined to fail and give birth to a world worse then the one we have" stated the man.

"Tomura…" Izumi warned seeing the rage and resentment the white haired man had for what the Vigilante had just said.

"Is that your final say in the matter?" asked Hiashi.

"It is. Now return me to Hosu, my work must continue"

"Kurogiri, please provide Chizome-sensei a warp gate" asked Izumi a request the Nomu didn't hesitate to follow. Stain would give the teen a grateful nod before stepping into the warp gate "bye Chizome-sensei" said the girl respectfully.

"That bastard!" hissed Tomura as he stood up but stopped when Izumi turned to bring a stern glare on the man.

"Watch your words and actions Shigiraki" said the girl with a dark tone too her voice. "if you cause harm to Chizome-sensei any bond between us will cease to exist" the greenette threatened as the duo glared at each other.

"Master-" began the Nomu.

"Let it play out" ordered Hiashi.

"Hmph" grunted the man walking past to teen and picking a jacket off a coat rack on his way out.

"your leaving to train with Stain while on the hunt?" asked the Toga from where she sat on Izumi's bed.

"yes, I need more experience against heroes like those that Chizome-sensei hunts it'll be what I need to be ready for our plans for the future"

"And your leaving me here why?" asked he blond.

"Simply put? I need people I can trust here but able to deny or defy Tomura" Izumi stated.

"And that's me?"

"Yes, Kurogiri is great but he has standing orders to follow the commands of both me and Tomura."

"Alright, I understand Izu" said the blond with a thumbs up.

"Well then I'm heading out now." said the girl pulling on a black hoodie before exiting her room thru the door.

Izumi wore the costume she had worn at the USJ attack with her new hoodie that in the night would hide her features well. The young teen stood next to the infamous hero killer on a rooftop of Hosu currently stalking their target witch was the pro hero Native. Stain already had a plan of attack one that would now involve the teen Izumi. Given her costume she could easily lure he pro out of sight and put an end to the hero. Izumi herself had another goal in mind and this was after receiving he students of UA's chosen internships the one that had Izumi's attention was the younger Brother of Ingenium: Tenya Ilda. Who rather then gaining the expected internship at his families agency the teen took an internship with the pro hero: manual. Izumi had her suspicions that the teen had taken the wrong turn and wished to pursue his vengeance against her teacher.

"It's time to-" began Stain before being interrupted by an explosion in the distance Izumi turning her attention to where it came from and she could see a few flying Nomu's making her grit her teeth.

'That Idiot using the Nomu in his petty game' Izumi mentally hissed.

"Ignore it" commanded Stain making the girl nod in agreement. "We proceed with the plan"

"Alright Chizome-Sensei." Izumi replied. With that she made her way down from the roof top and into the alley below and using one of her own knives gave herself a few cuts and smeared blood on herself. And lowering her mask she let out of ear splitting shriek of terror and went running and purposely running into their target. "Ah, A pro!" exclaimed the girl giving a convincing act of a frightened girl.

"Whoa, you alright?" asked Native.

"I am, but I'm an intern my mentor needs help a villain attacked him!" said the girl making tears brim in the corners of her eyes.

"Right! lets go help him!" said the pro with this Izumi turned around and lead the pro into the series of alleyways with a sly grin. After running for a few minuets before she came to a stop. "Where is your mentor?" asked Native looking around and finding no one.

"Oh! he's here." said the girl with a smug grin making him want to question her before he felt a weight land on top of him and a sharp pain in his shoulder from a katana piercing through him. "To bad for you we're here to kill fakes like you. The fight, if you can even call it that was over in seconds Native's hand in Stain's grasp.

"Why?" Native strained to ask.

"Stain-Sensei's reasons are his own but for me its simple, when you where a rookie you had a hostage situation five hostages: 2 men, 2 woman, and a quirkless girl; you prioritized then teens with powerful quirks when out of the lot they where the ones more likely to be safe but you left the quirkless girl to fend for herself,she died died cause of your actions." said the girl with a smirk. "I know that poor kid's brother and so you deserve to be punished. Feel the fear that girl felt: helpless and abandoned as you die unable to fight back!" stated Izumi with a giggle before securing her mask in place.

"Hold it right there!" demanded the voice of Tenya Ilda as he stood at the end of the alleyway facing the two villains and the hero his eyes first narrowing upon the hero killer before shifting to the green and black clad teen "You where at the USJ" it wasn't an accusation nor a question it was a statement.

"I was, Tenya Ilda, younger brother of Ingenium." said Osore as she drew a pair of her knives and facing the hero-in-training.

"So you know why I'm here?" asked Tenya.

"I do, but I'm afraid I can't let you taint yourself like that." said the girl switching her knives to reverse grips.

"Midoriya?" questioned the vigilante.

"I have it Stain-sensei, and please call me Osore when around hero's" said the girl getting into a battle ready stance. Izumi knew she was at a disadvantage her opponent had speed and was covered from head-to-toe in plate armor. The only advantage Izumi had was the fact he knew nothing of her skills nor her quirks.

"Then I'll go thru you." the hero-in-training threatened. As the muscles in his caffs tensed Izumi activating Analysis. Tenya pushed off the ground and rocketed to get past her something Izumi expected and so ignited a wall of flames that cut off the tall teen making him come to a stop before the flames with put him next to Izumi who dropped low and swept his feet out from under him. Quick to react Tenya's hands caught his fall as Izumi made a stab towards his unarmored shoulder. The taller teen moved at the last moment getting a cut in. Tenya took his chance to create some distance between him and the green villain.

Izumi's glowing red eyes took a moment to examine her bloodied knife before creating an opening in the flames and tossing it to the other side before the opening closed up. "I knew you'd be fast, but your reflexes are also incredible, then again they'd have to be otherwise the increased speed of your quirk would be a hindrance." when she didn't get any reply in return she knew she wouldn't get any banter. That would mean he'd be a good hero in the future in her opinion heroes spent too much time trading words with villains rather then attacks. Izumi would spend several moments using her flames and knives to attack the teen and she was starting to run out currently she was down to her last pair of knives and her trench knife.

"I'm done playing" said the taller teen darkly as he crouched down into a runner's position with the exhaust pipes of his quirk begin to emit an intense light.

'A super move?' Izumi mentally wondered as she readied herself for the attack, but as his muscles tensed to attack they suddenly became loose before the boy fell too the ground limply. "About time Stain-sensei." said the girl looking back to were her teacher stood as the flame wall died out.

"The boy was proving a challenge for you" said the hero killer with disappointment in his voice.

"Considering I was trying to deal with him without killing him, yes" said Izumi.

"This child is lost" said stain training his eyes on the paralyzed teen witch were met with hatred.

"Yet he has potential, if given the right guidance he could be a valuable asset in the future" stated Izumi with a knowing smirk.

"Do as you wish then." grumbled the hero killer as he turned to leave the villain with the hero-in-training.

"W-why!?" the downed teen struggled to ask making the shorter girl to turn her crimson orbs towards him as she knelled in front of him.

"Cause the world need heroes despite what my Senpai may think." explained the girl. The teen giving her a disbelieving look. "I don't blame your doubt, after all I'm a villain my life is dedicated to crime" said the Izumi.

"You know I once wanted to be a hero, a small little girl who wanted nothing more then to help and protect people. My life changed when a hero chose to not save me or my mother, now here I am a villain and my mother has been in a coma for years now because of that hero." said the girl before sighing "I'm not here to make excuses, I'm responsible for my own choices I chose to be a villain cause that hero showed me just cause someone is a hero doesn't mean they desire to protect and help and constantly heroes have reinforced that with their actions like how All Might tried to kill my father, yes he was a villain but he hadn't actively broken laws in year by the time All Might found him." said the girl with a shake of her head.

"I digress, the point I'm trying to make is that its too late for me to change my path, but you still have the chance to turn around you can be a hero worthy of the name Ingenium, I'm sure your brother wouldn't want you to throw away your future because of him." said the girl standing up and retrieving a phone from her pocket and tapping on it a few times. "Hm… the Todoroki should be here soon and he'll help you, see you around Tenya Ilda" said the villain before leaving the paralyzed hero -in-training.

Izumi stood on top of a water tower awaiting her teacher the one that they agreed to meet at but the girl wasn't worried after all her teacher was one of the strongest vigilante's in Japan. Her attention deepened after a few moments and her teacher not appearing when she saw in the distance a pillar of flames.

"Chizome-sensei…" said Izumi in disbelief as she arrived at the edge of a roof top and down below she saw her teacher…defeated... by Endeavour. The hero in question was handing the vigilante over to the police with a young brunette girl she looked exhausted with permanent blush marks. She also saw a pair of other UA students. The heroes and police where talking when she saw it a Nomu it was swooping down. Had Shigiraki sent it to rescue her teacher from the hero!?

The Nomu instead had grabbed one of the students the brunette and was flying off with her angering Izumi but a sudden movement cause her attention and faster then she could track her teacher had disabled the Nomu via a knife thru the head and he said the speech that would be immortalized.

"This world, overgrown with fake and corrupt heroes and the criminals who seek personal gain… They should be purged to create and more just society!" as the Hero killer exclaimed this it make all those pressent to freeze feeling to conviction and power behind his words! His eyes zeroing in on the heroes his grin became manic and crazed as his mask fell from his face. "Come you fakes! Try and get me! The only one Worthy to defeat me is the true hero! ALL MIGHT!" shouted the hero killer it was at this point Stain was no longer moving, he had passed out standing up!

Izumi recovered from her shock and moved to jump down to grab her teacher and flee with him! But she came to a stop as a large hand took hold of the teen Izumi instantly recognized it, as belonging to Gigatomachia!

"Giga! let me go!" Izumi ordered turning to see the warp gate of Kurogiri and pulling her in the teen futilely fighting against it as she saw the hero and police securing her teacher "Chizome-sensei!" shouted the girl as she was pulled into the warp gate as it closed leaving no trace she was ever there. It was from this moment that Stain would forever be immortalized despite heroes and others attempts to prevent this a video of Stain and his words had been recorded and passed onto the internet where in less then an hour the video was Viral being passed across the entire world!

Chapter end

I hope you enjoyed this chapter. I had a lot of fun writing it! Moving forward I what you to help me make a decision on who should inherit OFA: Bakugo, Uraraka, an OC, or no one. If there is someone else you think should get it let me know. Till next time, read and review!