After Izuku finally stopped spilling his heart out and calmed down he told his teacher to rest, he had already caused him too many problems and he would still need to deal with Eri when morning comes.

Finally alone and mentally exhausted from the hectic day, week, month he has had, he decides to get some fresh air.

Sneaking out and climbing the building was easy for him so he reached the roof in no time, his teacher's home wasn't anything outstanding so it wasn't a great view to the city but he could see the police helicopters that were rushing to his most recent crime scene fly across the night sky.

Looking at the stars twinkling in the black sky, Izuku fell silent as the weight of it all fell on his shoulders.

Many of the things he had planned were done, the people he wanted to protect were safe, now there was only one last thing he needed to do.

But before that…

"D-Dad…"

The word comes out clumsy, as if his tongue didn't know how to say it but the ghost of Hisashi did not waste a second to appear by his son's side, eager for the first time he had called for him.

"Can… can you tell me about yourself?"

"What brought this?"

His father is obviously curious, but he was definitely willing to tell his son anything he just wanted to know why.

"I…" Izuku, for the first time since he had come back, feels nervous "I realized that even back then, before everything happened, I never knew anything about you"

"Even then, laying next to you waiting for you to die, I knew nothing about the man who called himself my father"

Falling silent once more, Izuku looked at his hands, even if they were clean now a part of his mind would forever make him remember them stained in blood.

His father silently stared at him, feeling guilt coil in his chest as he painfully recognized the look in his son's face, one that he has seen more than enough times in the mirror.

"Alright, son" Izuku looks back at him, surprise clear on his face "let me tell you the story…

Of the greatest Demon King"

--

They were a normal family like any other.

A husband, Hisashi, a wife, Kazue, and their precious child, Mitsaki.

That was the life of the man once known as Hisashi Shigaraki.

He was a man who dreamed of one day showing his paintings in an exhibition, walking through those halls hand in hand with his loved ones.

Maybe spend the afternoons sitting on the couch and reading his brother's future books.

A good life.

Sadly, fate is one cruel mistress, always pulling the carpet under one's feet at the worst time.

And as he heard the news of humans beginning to develop superpowers, he knew this was one of those moments.

At the beginning many people saw it as a blessing, the dreams of many became true, from video games and movies directly into real life.

It was like a dream come true.

But many forget that power doesn't discriminate.

Anyone can have it, use it as they please, and that is the true cold reality of the world.

With the rise of those that dreamed to become heroes of the modern world so came those that wanted the opposite.

Heroes and villains, two sides of the same coin.

Of course, after the initial shock, people began to talk.

"A new step forward"

"Human growth is amazing!"

"A bright future"

Some people looked positively at the situation, of course it's impossible everyone thought the same.

"FREAKS!"

"MONSTERS!"

"DEMONS!"

Many just couldn't accept the change and thought that those who obtained powers were freaks of nature.

For a while Hisashi did not care, yes he learned much of it unwillingly because of his little brother but he and no one in his family had powers so why should he care?

At least, until he saw the lights.

He didn't know what they were but one day he could just suddenly see these floating lights inside people, not everyone, only those that had super powers.

And he knew what this meant.

For himself.

His family.

And his future.

So he hid. Putting himself and his family away from the masses to try and hide from their judging eyes.

But, unless you are dead, secrets will always come out.

So when he heard a loud knock on the door, even when his whole family was already inside, he knew that the time had come.

The knocking quickly changed to loud repeated bangs against the door, trying to run turned out to be useless as the door quickly caved at the sheer number of people on the other side.

People who hated those with powers just for being different or for thinking that they would all become villains, those people broke into his home and on baseless rumors, separated him from his wife and child.

They showed them no mercy even if the two were free of his sin but from just knowing him did the masses pass judgment on them with weapons raised.

And when he saw the red, his vision turned black.

He still didn't understand how his own powers worked but there was no need as his instincts took over and on the first person he saw with a small light within them, he pulled.

That was the first quirk he ever stole.

He doesn't know how long it took but when he came back the walls had been painted in red and inside him was a growing constellation.

Bodies littered the floor but the only ones he cared about were the ones of his late wife and child.

At that moment, something deep within the man broke and the only thing that maintained him together was the small glimmer of hope that was his trembling younger brother.

His last family.

His last precious thing.

He'll protect him.

He'll become stronger so that no harm ever falls on him.

So, with bloodied hands and a fire burning within his heart, he ventures forward a path of revenge.

Getting allies wasn't hard, others that were just as hurt as him were everywhere and those that just wished to hurt others were nice dispensable pawns.

Making a small army was much easier than he could imagine, his ideas and feelings resonated with those broken and his unique power demanded respect from the rest.

Of course, there were those that tried to get in his way, those annoying heroes.

He just couldn't understand, how could they side to try and protect those that had taken everything from him?

After many close calls with death and a few silver strands of hair appearing did he realize that he wouldn't be able to finish this mission in his lifetime.

And it enraged him.

If he fell and died before being able to see them pay, it would be his loss, and Hisashi is a very competitive man.

Thankfully, powers were growing and changing so finding one that made him live for longer wasn't that hard.

Of course, knowing that the world was dangerous, as much as he wanted to protect his brother he knew that his brother would need something to protect himself and judging by the lack of light in him, he knew what he needed to do.

Like a good older brother, he gave him an old toy of his.

Oh how that came back to bite him.

Raising his hand against his brother, his most precious person, tore his heart apart.

He could see nothing but rage in his little brother's eyes as sparks flew off him, the power he had given him having clearly taken root within him.

But it wasn't enough.

But even then, after his brother had gone to the one's against him, had tried to stab him in the back, placed him in the role of a villain, he could never hate him.

So he did the second best thing.

He placed him under lock and key.

It may seem cruel, but he couldn't bring himself to watch his brother go somewhere he couldn't reach.

Except that the world had it against him.

The broken vault door seemingly mocking him as it revealed an empty metallic room with only a few comic books littering the floor.

That day, a large part of Japan became a crater.

Anger was replaced with panic, he didn't know where his brother had gone, how he was doing and the faces of his lost family mocked him for being so careless.

So when he saw his brother once more, relief washed over him like waves, if only the light inside of him was still there.

His little brother, just as much of a dramatic bitch as him, explained that he indeed had a power before the one he forced bestowed on him, it was just as impressive as his own, the ability to pass on his own power.

But even then, completely powerless, he still held something over him.

His life.

And like a brat, he decided to break it.

The sight of everything he had wanted to protect, laying on the floor like a puppet that had its strings cut sent him into a rampage.

Anger completely replaced by grief as the once composed villain became nothing more than a wounded beast.

His cry echoed into the night as he clutched the cold body.

His mind was covered in dark clouds for weeks, not caring about what any of his subordinates did or what they expected of him, his reason to live was gone, so why should he continue?

At least, until he saw the first person with two lights within them.

A man with spiky hair tried to glare a hole into him but he couldn't bring himself to care about that, because the familiar shine of his brother's power had taken all his attention.

The pieces of the puzzle began to fall into place.

And he felt as something deep within him spark back to life.

That was it.

The last thing that remained of his brother.

Without hesitation, he reached out.

And it slipped out of his grasp.

As slippery as always, huh Yoichi?

But he didn't give up, he would never give up, not until the quirk was brought to its rightful place, by his side.

His brother was annoying, yes, but he didn't think he would make a game of cat and mouse last for more than a century.

So now, after that blasted Shimura destroyed most of his evil empire, he had to go into hiding once more.

And for a good cover, he needed a job, maybe he'll try a new job, he's got over a hundred years of experience, he's sure that he can do anything.

Alright, being a lawyer did not go well but that isn't fair when you can't help but see the face of your dead wife in place of your opponent.

The woman he had gone against, Inko Midoriya, was an almost perfect copy of his late wife, aside from the green hair.

So the words spilled out of him faster than he could react, asking to get to know her.

From that point on, the strange relationship between the two began, meeting up to talk about whatever was on her mind and whatever random job he had decided to pick up.

It… it was cathartic.

Just sitting down and relaxing, when was the last time he had done this? When was the last time he had lived in the present?

Before he knew it, his heart, once thought cold and dead, began to beat once more.

And oh, the moment he was able to hold his new child was possibly the single greatest moment of them all.

It was only because of his fear of hurting little Izuku that he didn't crumble to the floor and cried.

Looking at the new precious treasures in his life, did he feel a fog clear in his eyes, he had found something to hold, something to care about again.

So he decides something. He will get his brother back and then his family can finally live in peace.

Or so that was the plan.

Before a massive golden ox ran him into the ground.

Now, forced to live like a bat, rage simmers under his skin as he burns the image of All Might into his mind, having everything he ever wanted so close only for it to be taken away once more.

He will take his revenge no matter what.

--

"And after that… I think you know what happens next"

Izuku stays silent as he digests the story, an ugly feeling coils around his heart as he thinks of the sibling they will never meet.

"So there you have it, the story of a man that was controlled by his own emotions until he burned everything down, that's the Demon King"

First, having manifested at some point, glanced at his brother with a swirl of emotions in his eyes, words left unsaid between the two.

"Okay…" Izuku sat down on the roof, a glint of determination on his eyes "I think I made my decision"

"Decision for what?" First asked.

"I'm going to make a deal with All For One"

"Son, are you sure about that? That quirk is dangerous and now that it has a mind of its own, even more, they could…" his father doesn't dare finish that sentence.

"It's okay, I think I have an idea on how to get them on our side" Izuku smiled at the two brothers, no hesitation or doubt could be found in his eyes.

The ghostly brothers could only swallow their concerns as they knew that Izuku was stubborn enough that only god could come down to stop him, and even that wasn't a guarantee.

So, with heavy hearts, they nodded.

Izuku took a deep breath and closed his eyes, beginning to focus on the world inside himself.

Once he opened them again, he was no longer on a roof but a dark void illuminated by a galaxy worth of stars above him, and in front of him was a heavy metal vault door.

Next to him was a figure made of golden flames who, even without a mouth, showed his own concern towards the little green.

Izuku smiled "Thank you for protecting me again, All Might, but it's time I stop running" his voice was steady and he did his best to show his conviction.

All Might sadly nodded as he went to open the vault.

The sound of metal scrapping metal echoed around them as the door slowly opened.

Inside the dark room, at the very back rested a figure very familiar to him.

A boy with messy dark green hair, a broken and tattered hero suit, white gloves dyed red and around his feet was not a shadow but a wiggling black and red sludge.

Blood red eyes met with shining green.

" Welcome back, Hero "