Impenetrable Defence

Chapter 1 – Stepping into the hero world

A couple of characters have been gender bent (Bakugo and Todoroki) so be warned if you're not into that stuff, yadda, yadda, yadda. Quirk!Izuku

"Normal Talking"

'Normal Thinking'

"Buff Might/Crazy/Determined person talking"

'Buff Might/Crazy/Determined person thinking'

I don't own My Hero Academia; all rights go to the original creators. Hope you Enjoy!

. . . . . .

Outside a hospital room in Tokyo, we find a taller figure waiting anxiously for something. This man is the soon to be the Midoriya family dad, and currently, he is trying to not die from nervousness. In the room in front of them, they find sounds of moans, groans and screaming. Then he hears a voice that beats out all these sounds. The sound of a baby crying.

It's been a week since Inko Midoriya has been admitted from the hospital and currently, she was spending her time crying her eyes out. Why may you ask? She has just received word about the condition of her son and it doesn't look good at all. There seems to be an incurable disease that they have no experience or records of that's destroying his body. They said he wouldn't make it past his 4th birthday. It was an extremely sad day for the Midoriya household.

That should've been it for Izuku Midoriya. No friendships, love and his dream of saving people. But it wasn't after all Izuku Midoriya never goes down without a fight. It seemed like some miracle that Izuku would survive, with his disease mysteriously neutralising itself.

. . . . . .

"Even if I don't have a quirk, can I become a hero? Can someone even without a quirk be like you?"

"I'm sorry kid, but pros are always putting their lives on the line for the sake of their duty, so I cannot really tell you 'you can be a hero' without a quirk."

"I… I see."

"If you want to help others, you could try being a police officer, although there often made fun of for getting villains delivered to their doorstep, it's still a fine occupation. It's fine to dream. But you have to consider what's realistic, young man."

Midoriya wasn't really attention past that point. His whole life has been denied to what he wanted to do. He was always told he couldn't do things but he never let go of his dream, but it seems like his hope has been lost. While he was lost in thought, in the background, an explosion went off.

'What pro will go to the scene this time around?' As Midoriya was about to leave he suddenly stops and remembers All Might's words:

"It's fine to dream. But you have to consider what's realistic, young man."

He suddenly lost all previous enthusiasm, after all, what's the point of taking notes when they don't equate to anything. He sluggishly trudged his way through the streets lost in his own thoughts. Midoriya was so absorbed that he doesn't realise where he's walking and when he comes to his senses, he's in front of the villain attack.

'Did I come here subconsciously? Why won't my feet stop moving?'

Midoriya arrives and what he sees is… horrifying. The slime villain who All Might captured was free and had a hostage. Midoriya quickly started observing the situation, an old habit he's had for a long time. He couldn't see who the hostage was, but it seemed they had an explosion or fire quirk, judging from the fire and craters. He found that many of the heroes were sitting back waiting for someone for a more suitable quirk, kind of pathetic if you asked him. Finally, in the hands or… the tentacles of the villain he finds his childhood friend turned tormentor Katsuki Bakugo or referred to by him 'Kaachan' from when they were kids. Something inside him suddenly snapped and he gained a deep desire to rush out and save her, even though it goes against all logical thinking.

Before he knew it, he was running past all the witness' and pro heroes. He could hear the shouting behind him, but he just couldn't stop. It was like he just gained something he didn't have his whole life and it felt... great! Before he knew it, a tentacle was flying into his face and his body reacted instinctually by guarding his face with a green… something, although he didn't realise it. It felt warm and safe and made Midoriya for once in his life feel alive like he suddenly was able to eat food after not eating for his whole life. The sludge villain suddenly pulls back in recoil and pain, it seems the green substance directed the pain back to the villain. Midoriya lunges forward with more speed used than what he's used too and grabs Kaachan out of the villain's grasp. He was able to physically touch the villain by using the green substance on his hands as a grip. The villain quickly recovered and sent a killing blow in anger at the children, intent on ending their life. Midoriya was ready to shield Kaachan with his body, much to her shock but before the blow could land All Might appeared blocked it for them.

"Pathetic! Even though I admonished you I wasn't doing what I said in practice! Pro's are always putting their lives on the line!"

"DETROIT SMASH!"

The villain evaporated, and the clouds move under the pressure of the punch. Rain starts falling and the crowd looks flabbergasted at the effect of the number one pro hero.

"He changed the weather with one punch!"

"Amazing!"

"That's All Might for ya!"

(A/N By the way, no one notices Midoriya's quirk in the heat of the moment)

. . . . . .

'I wasn't able to tell All Might that I was sorry for the trouble I caused… I guess I'll just have to write to him on his forums later tonight.'

While Midoriya was lost in though Kaachan suddenly started yelling from behind him

"Stupid quirkless Deku! I knew you were stupid, but this is an entirely different level, you Deku! Running out there thinking you could save me huh?! It's supposed to be the other way around, you dumbass nerd!"

Midoriya looks on puzzled, Kaachan has never really acted this emotional in front of him before…

"Forget it Deku! You obviously don't understand what I'm talking about! I'm out of here!" She screams as she storms away frustrated.

'Huh… What the heck just happened? Well, whatever, I need to put this all behind me and find a realistic job, although I need to get home straight away, mum must be worried sick.'

Suddenly out of an alleyway All Might runs through and shouts; "I am here!"

Midoriya was obviously startled. "W-w-what? All Might? I thought the press was still keeping you busy?"

"Ha, ha, ha! Nonsense my boy! Getting away from those reporters was a piece of cak- "

Suddenly All Might starts vomiting blood and undoes his transformation, back into skinny might while Midoriya looks on terrified.

All Might gains a more serious look and looks into Midoriya's eyes. "Look, kid, I came with a correction and a proposal." Midoriya looked confused at the statement but kept his mouth shut for now.

"If I hadn't heard your story, I would've been fake muscles standing around doing nothing at the scene and for that I thank you."

"Not at all All Might! It was my fault for getting involved in the first place, I shouldn't have disturbed you on the job!"

"Not at all young man! Of all people and pro heroes there you, only you, the quirkless, timid kid acted in true heroism! You see, most top pros have stories from their childhood of acting before they could think! That's what happened to you, right young man?"

Midoriya shakily nodded and shouted "Yes!" subconsciously as he started tearing up, he knew where this conversation was heading.

All Might started to smile and said some… life changing words would be putting it mildly; "Kid I think you CAN become a hero, you are worthy to inherit my power!"

"What?"

"Ha ha ha! What's with the troubled face young man!" All Might asked while pointing at Midoriya. "I'm asking you if you want to inherit my power!"

"…Are you sure this isn't a dream right now?"

"I have many secrets, but I never lie!" All Might held out his hand as it glowed and the wind flowed behind him majestically "I have the ability to transfer my power… This quirk is called One for All! In fact, before I had this power I was quirkless like you too!"

"But… out of all the people in the world to give it to me… why me, the quirkless Deku?" Midoriya asked confused as to why he would be chosen and surprised to know All Might was quirkless as well.

"I have been searching for a successor for a long time now… I believe you to be worthy because out of anybody at the scene, it was YOU, the quirkless timid young boy who acted! That is why I believe you to be worthy!" All Might coughed into his hand and whipped the blood off the sides of his mouth.

"Of course, this depends on what decision you make." Midoriya's head was spinning, he had just been offered one of the strongest powers this world had to offer.

Midoriya wiped the tears from his eyes away with his jacket and looked up at All Might with a determined face. "I don't have a reason to refuse… If you believe in me, then how can I not believe in myself? Yes! I accept!"

The wind blows harder and the leaves start spinning around them and All Might smile at Midoriya, this was exactly what he was looking for in a successor. Suddenly, Midoriya slowly starts losing his balance and falls over, but All Might catches him before he could do so.

'The events of today must have tired you out, young Midoriya. However, could you have passed out AFTER I dropped you home? I have no idea what your house address is!' All Might complained in his own head. Luckily, he found his future successor's mothers phone number in his bag, however, he didn't realise that Midoriya's body was going through a drastic change due to the quirk he awakened not long ago.