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I am not a parasite!

Summary:

Izuku has a very bad, no good day and it only gets worse as he discovers that a strange alien has decided that his body is a good home and that his mothers cooking is great.

What does he do with the new powers his new friend gives him? Become a hero obviously (technically a vigilante but potato potatoe)

Now he has to keep his identity as Izuku Midoriya, student at UA and nineth wilder of One for All and the dark vigilante Venom separate so that his homeroom teacher who is also the hero who is trying to catch him doesn't discover him!

Also a big evil corporation is hunting him down, that's a thing too.

Chapter Text

Izuku was really tired.

He probably just had the worst day of his life.

Getting told to go jump off a roof by his childhood friend, getting involved in a villain attack twice, getting scolded by multiple heroes for trying to help and finally, the cherry on the top of the cake, getting told to give up on his dreams by his idol.

Today really sucked, all he wanted to do was just lay down and start a new plan for his future, maybe he could try working as a doctor, he still would get a good pay and could still help people in a wa- Midoriya’s train of thought was completely thrown off its rails as someone grabbed his arm in a painful grip and pulled him into an alley he had been walking by.

His instincts immediately kick in as he begins trying to break free not wanting a repeat of the sludge villain or something worse, he looks at his attacker and all he sees is just a really angry hobo, their body's covered in tiny scratches, their eyes are completely bloodshot and aren’t even talking as they just keep growling at him.

He tries punching and kicking him to try and make him let go but nothing seemed to work as they just completely ignored them so he was down to his last card, he begins calling for help, he only last for a few seconds before he is thrown to the ground with the hobos hands wrapped around his throat choking him.

He clawed at the man who only seemed more hysterical, his view soon began to darken as he felt his own movements slow down.

As all of this was happening, he was so focused on his attacker that he didn’t notice the black goop that started to ooze from the man's arm and quickly move down their arm until they reached Izuku and began to seep into Izuku.

When the final bit of the sludge left the man his eyes went white, his body stiffened and stopped moving and finally fell on top of Midoriya, no pulse or breath, he was dead.

Izuku didn’t hesitate and took a deep breath of air as he pushed the man's heavy corpse off him and quickly ran away from the scene.

He runs until he is in a street close to his home, he takes a few more deep breaths as he rubs his neck, he really hoped that wouldn’t leave a mark, he isn’t sure how he’ll explain that one to his mother.

He slowly begins his walk back to his home until he is stopped by Kcchan, he was yelling something at him but Izuku was too tired to really proces any of it so he just smiles and say ‘yeah’ which seems to work, he begins walking again just wanting to take a nap but he is stopped once again by- BY ALL MIGHT!?

“Young Midoriya, good thing I caught up to you, I have something to tell you…” 

In the next few moments he would hear the words he needed the most and an offer he couldn’t say no to.

“Young Midoriya, I believe you can be a hero, which is why I want you to be my successor and give you my quirk”

As he cried, something deep within him stirred, something that was both surprised and quite happy with how things were going, this new host was the best one he had in years, pretty much a perfect match.

He was going to enjoy it very much.

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It had been a few weeks since the green teen had started training with All Might, sometimes he woke up thinking it had all been a dream, and today was the same thing he had been doing for those past few days, cleaning a trash covered beach.

The mountains of trash may seem intimidating for some people but for Izuku they were nothing more than another challenge for him to achieve his dream.

But something really weird happened that day, as he moved a few small pieces of metal, he ended up moving one that was holding one of the bigger piles of trash from falling so as soon as he moved it, the pile trembled and began to fall down on him but before he could react he felt something pull him back, almost as if someone had grabbed his shirt and pulled him away from danger.

He looked around to expecting to see All Might or really anyone but he saw no one and he was even more confused when his mentor came the opposite way in his small form “You gave me quite the scare Young Midoriya, when I heard the trash fall I ran here as quickly as possible but I am glad that you are okay, I didn’t know your reflexes were that good”

All Might seemed relieved but Iuku was still very confused, it didn’t feel like he was the one that moved, but there was no one else but them in the beach and his teacher was too far to help, maybe he had actually moved out of the way, maybe he was thinking too much about it.

Yeah, that has to be it.

As they both moved on, they didn’t notice the strange black goo that had stuck to the ground, it quickly reeled back into Izuku’s back where a black mass of goo was until it slowly retreated back inside him leaving no mark that it had ever been there.

Many strange things continued to happen but there were two that really stood out.

He couldn’t take it anymore, it kept torturing him, asking for more and when he gave it what it asked of him, it only greedily for more, it was driving him crazy.

That night he decided that he had enough, he stood up from his bed and walked with no problem around his house, he had it memorized since he was young, he walked closer to the door already praying that his mother could ever forgive him, to see her own son like this, he was pathetic.

He carefully pushed the door open so it didn’t make a sound, he slowly walked closer to his target, the light of the moon making his green eyes shine in the darkness of the room as he stared down at his prey until he finally stood in front of her.

She looked just so inviting, he slowly licked his lips as his stomach growled at him, he couldn’t hold back anymore, his hands shot forward and ripped her open like nothing more than a bag, he knew that there would be a mess but as his teeth sank into the soft meat and the taste completely took over his senses he forgot about it all, about the mess, about the danger, about his mother, all he could focus on was his hunger.

Then the light turned on.

Izuku slowly turned to look at the door where he saw his mother in her pajamas looking at him confused as he was crouching holding the cold katsudon from their dinner, she then looked at the mess he had made in the kitchen after ransacking the fridge, Izuku swallowed the mouthful of katsudon he had and awkwardly smiled at his mother as he got back up “I was… hungry, sorry”

After that day his mother forced him to give up the diet and begin eating more (surprisingly, this didn’t really affect his training and it was a big surprise that he could now eat for at least two people) 

And the second one was when things got weird.

He had been in the middle of an exam in class and with how exhausted he had been from All Might’s training so his mind wasn’t entirely there but he snapped right back into place when he had problems with a history question and a strange voice whispered to him

Its option B

He immediately looked around to try and see who just said that but everyone else was focused on their own exams and since he sat on the back of the class no one could have whispered it to him, maybe a quirk? it couldn’t be, no one in his class could do that and he doesn’t think that someone from another class would just sneak in to try and help him in an exam.

He’s tired, yeah that must be it, he’ll take a nap when he gets back home, but for now he chooses option B in his exam.

But the day when the glass overflowed was the day he saw the men in black suits.

He had been walking back from school when he saw this strange group of men in black suits walking around looking at everyone, they looked like those men in black from that movie he once saw, with the earpiece and the black glasses on but the weird things is that his body trembled when he saw them, an irrational feeling of running away from them took over his body and his feet began to move on their own, he was taken aback and tried to take control of his body which caused him to trip with his own feet and head face first to the floor.

But before he ate ground his hands moved on their own and stopped him inches from the ground.

Are you trying to make us look bad?

Wait, what!? it's that voice again and why can’t he move his arms!?

Because you will just get us caught, now stop fighting

His body moves again and moves him to hide in an alley as the men in black suits walk past him not even giving him a glance, he tries to move but it's as if his own body is fighting against him, he looks around, was someone messing with him, were they using their quirk on him?

Suddenly the voice answers his thoughts sounding much more irritated.

Don’t compare us to those things you call quirks, we are much more than that, stronger too

Okay, Izuku was panicking for a lot of reasons, one his body wasn’t responding to him, two he was hearing this strange voice who seemed to answer to his thoughts and three it was saying it wasn’t a person or a quirk, which only left one question “Who… who are you?” he asked, the voice let out a laugh full of malice and then a strange black goop began to seep out of him and a part of it began to move in a snake kind of way as it slowly took for, two big spots of white took place at the front which he guessed were the eyes and then under them it split open revealing it's rows of sharp teeth that formed into a terrifying smile.

The voice, this time, came from the being in front of him.

We are Venom