Izuku was forced on testing the most gruesome and painful experience any kid should face they would inject many drugs and put him on what looks like that a piller filled with some green liquid while izuku is in with wires on him he would be in them for what he feels like days but would be to like 13 to 15 mins.
Everyone in the league would make it worse frgeting to feed him ending up him having 2 meals a week and to top it, having dabi burning him randomly, toga cutting him, shigaraki would hut him by grabbing his arm till a little bit of skin is off leaveing it to were u see his muscle. The only ones who would be nice to him would be the hero killer and Kurogiri. Kurogiri would teach him the basic knowledge for a 4 and 5 year old and would even teach him things and average middle school 7th grader would know knowing he would pay attention and was educationally smart for his age, for as for the hero killer he would train him on basic martial arts and would sneak in food for him time to time.
For the majority of the time he would be im a room dark with only light from underneath the door. In there there would be a Nomu in there because little did he know he had developed a quirk which was kyuubi. It wasn't really a quirk bc it could not be tooken away from him, it was more of a ancient creature during the 12th century that would be mostly immortal. He would awoken his power most time when he would be angered but would be knocked out after he would calm down. When he was 5 he had fell unconscious on night from one of the beatings he had took something extraordinary would happen.
In his mind
"So your my new so called holder, the new jinchuuriki holder" a fox with nine tails and big red eyes with slit like pupils, "who are you, and what is a jinchuuriki, and why are u locked up, and whats ur name" and very small izuku said with curiosity, "aren't you scared of me kid" nine taild fox asked izuku shook his head no with a great big smile " well kid my name is kurama known as the nine tailed beast, the strongest ancient beast to ever lived and a jinchuuriki is the holder of the tailed beast I'm in" "woh!" An excited izuku said "yea I'm shocked i was alive, back in the day there used to be many jinchuuriki all were killed, so would i thought till I discovered myself in you and from what I can think would had use from my old host's DNA" the fox would explain making the 5 year izuku look down remembering the test he would take. "Hey kid it will be ok ik one day you will get out here and be the hero you want to be and you know why" "why" izuku would say quietly " because you got me the most powerful beast ever to be lived" in kuramas head he thought " why am I cheering him up, why is he making me all nice?" Izuku smiled and looked up and said to kurama " thanks kurama I will" then kurama thought "he sorta reminds me of him." "Well kid it looks like times almost up" kurama said " but why?" Izuku asked " because I only speak to you in your mind typically when ur asleep l" then before he leaves he says " before you go i need to tell you something, my power leaks whenever you are angered so becarfull because ur anger affects me i can hold be so little than I can ok" "ok kurama and also why are u in a cage" izuku asked as he disappeared but before he did kurama said "thats a talk for the next time I see you kid"
Outside of his mind
He thinks to himself "at least I got a new friend now.
A weeks past he and kurama love to talk well izuku is still trying to understand him and the cage which he takes down because he trust kurama alot which builds a great bond. During the 7th day of the week he would be getting a suprised that would make him free and happy.
To the heros
"From what we get, a hid out of one of the league of villans would be in a abandon bar and we are here today to attack it with the helps of the heros" nezu would say to the 4 heros which would be all might, eraser head, midnight, and present mic "yes they should be stopped before they cause anymore issues" eraser said "YEA" mic would say
As they explained the plan they get to the base for the villains and all might get through a wall and says " VILLAINS BEWARE, WHY BECAUSE ALL MIGHT IS HERE" knocking out all the villains before Kurogiri teleports them all away. The heros search the base till they to to a door get to a door with a sign ~caution~ they open to see a child in a corner, as the heros get close he says " please don't hurt me I'm sorry!" He was shaking and as for the heros look at each other scared and a minute midnight steps up and says " hey its ok were heros your ok now" izuku looked up and notices that its midnight and says "woh ur midnight" "mhm come with us your safe now" as midnight reaches out her hand slowly and izuku grabs.
Later they would meet a detective dog asking izuku questions separately from the heros and once he was done he would talk to the heros, " so from what we got was that he is izuku midoriya and his parents despised him and kicked him out for being quirkless then the villains took him doing test and end up giving a quirk of an ancient beast which can react badly when angered but from there on he is too dangerous to be in an orphanage in my opinion I was wondering what you would like to do to him. The heros looked at each other then midnight said "I'll be taking care if him knowing as my quirk could be affective when he is out of control" "then its settled" the man dog said as he get izuku out of the room and when he is out he slowly get out with his head down shakey little bit and then midnight says to izuku "hey there izuku how would u feel living with me for now on" izuku looks up with his eyes wide open and says "y-y-yes please, thank y-y-you!"
As they head to her home they go to an apartment on the 3rd story that was lucky 2 room and as she opens she says "well welcome to your new home" as he goes in midnight would lead him to the spare room and said "this is usually a guest room but I don't get any usually but this is ur room now, and my name is Nemuri Kayama but you can call me whatever you would like" "o-ok nee-chan" izuku said, "well let's take a shower than let's eat" as they shower was comfused as what the shower was and once they were in he would hate when Nemuri would scrubed his head with the shampoo. Once they got out she would dry his hair and laughed when his hair poofed like and afro, when it was time to eat she had made 2 bowls of katsudon she was comfused on why he hadn't eaten yet and thought "they must had barely fed the poor kid." "Its ok go ahead and eat" then he start to eat like it was his first meal "they must have barely fed u huh" midnight said "mhm they only fed me once a week sometimes more when Kurogiri and hero killer would sneak food in before they taught me school work or marital arts" shocked what she heard the little boy said, she didn't know which she was more shocked that they starved him and he is alive or that the villains especially the hero killer would help the poor child. "Well eat whatever you want when you want ok ototo" "K onesan".
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the nine tailed hero (Izuku X Jirou)
Fanfictionizuku's life wasn't what you call a happy life or happy at all he was born quirkless at 4 which his parents despised of him leaving him on the street which being token by the league of villans experimenting on him till on day he was saved by the her...