Author's Note: Hey everyone, Fire Slash here and welcome to my third planned MHA/Marvel crossover, this time starring the Phoenix Force. Before I begin, allow me to address some things. First off, Izuku will be immensely OP in this story, just like the Phoenix Force. Be prepared for that. Secondly, I'm not sure what I'm going to do in regards to pairings. On one had, I love adding romance to my fics. On the other hand, this one could easily work without a romance subplot. Should I pair Izuku with someone? You guys can decide in the reviews. Finally...actually, I don't really have much to say.

Now, with all that out of the way, review and enjoy :-).

0000

"There can be no rebirth without a dark night of the soul, a total annihilation of all that you believed in and thought that you were-" Hazrat Inayat Khan.

0000

"Not all men were born equal," no one knew this better than Izuku Midoriya. A young boy, all he wanted in life was to become a hero. In a world where eighty percent of the population are born with quirks, innate powers which manifest at a young age, heroes and villains can exist, making the boy's dream achievable. Kind and selfless, Izuku would've made a great hero, if it weren't for the fact he lacked a quirk. Being quirkless made him powerless according to others.

"M-mom? I can still be a hero right? I c-can still be like All Might, right?" Young Izuku Midoriya asked his mother the day after he was diagnosed as quirkless, tears streaming from his eyes. All the boy wanted was to become a hero like All Might, the current number one hero, but without a quirk, his dream seemed to be out of his reach. 'Please, please tell me you still believe in me…'

"Izuku, honey…" his mother, Inko Midoriya said, trying to stay strong for her child. Unfortunately, she couldn't, wrapping her baby in a hug and sobbing next to him. "I'm so sorry!"

'No mom...'

'Please stop!'

'You're supposed to tell me I can…'

'Stop it!'

When Izuku asked his question, he was looking for reassurance, a reminder that someone was still on his side, believing in him despite his lack of a quirk. What he got instead was a reminder that he was alone and if he wanted to chase his dream, he'll need to do it by himself.

And chase his dream he did. Knowing that he'll need to try twice as hard to become a hero compared to someone with a quirk, he did just that, strengthening his mind and body. He taught himself the basics on how to fight, studied things most kids wouldn't learn until they were adults, and kept detailed notes about every hero and villain he could find. Doing so allowed him to think of ways in which one could effectively use their quirk while also coming up with ways to render a quirk useless. Yes, even if he lacked a quirk, the boy still aimed to become a hero, his drive bigger than it's ever been. At least, that is, until THAT day…

0000

"All right, as you all know, you're all reaching the end of middle school," Izuku's teacher middle school teacher stated. "Now's the time you all think about your futures. Eh, who am I kidding? All of you are planning on becoming heroes, correct?"

Upon hearing this, most of the kids in his class cheered as they began to show off their quirks. Izuku simply smiled alongside them.

"Hey teach, don't lump me into the same category as these crappy side characters," a boy with ash blonde hair scoffed. "I'm off to be the best damn hero you've ever seen."

Ah yes, Katsuki Bakugou, a boy famous throughout Izuku's middle school. With never failing determination and the ability to create explosions from his hands, Katsuki was without a doubt the most eligible student in this school to become a future hero. That isn't to say the boy wasn't without faults though. With immense power comes immense arrogance, the boy looking down on everyone else as he believes them to be worthless, quirkless Izuku especially. In addition, he had a fiery temper and was quite violent. If he perhaps learned how to control his emotions and became a bit more humble, then Izuku would say that he completely deserves to be a hero.

"Ah, right, you're applying to U.A correct?" His teacher asked the boy, surprising most of his classmates. U.A Academy was considered to be the best hero development school in Japan. The chances of anyone getting in was slim, yet this didn't seem to faze Katsuki, the boy having a smirk on his face.

"Damn right I am, I even aced the mock test!"

At this point, Izuku tuned his bully out, not really wanting to hear him brag. Eventually, the topic was changed, though looking back, Izuku would rather continue hearing Katsuki brag than experience what was about to happen.

"Izuku, aren't you applying to U.A as well?"

All eyes now on him, the boy mentally groaned as he knew what was going to happen next. 'Crap.'

"Really? Isn't he quirkless? How does he possibly think he can get into U.A?" One of his classmates asked as everyone laughed at the quirkless boy. He hated how everyone mocked him just because he lacked something they had. It didn't make him any less worthy, did it?

Thankfully, he didn't have to listen to his classmates for long, the bell ringing a few minutes later. Glad that the day was over, the boy began to pack his things, only for someone to swipe one of his notebooks.

"The fuck is this?" Katsuki asked out loud, making his victim nervously eye him as he had no idea what was going to happen. "Hm…'Hero Analysis for the future?' You really think this is going to help you?"

In the background, two boys snickered, them being followers of Katsuki despite the fact he simply saw them as extras.

"K-kacchan," Izuku weakly said, referring to the nickname he gave the boy back when they were childhood friends. That book was his pride and joy, composed of years of work. "P-please give it back."

Ignoring the boy's pleas, Katsuki gave him a devilish smirk. "Listen here Deku, you should just give up trying to be a hero. You're fucking quirkless. You can't be a hero without power."

Hearing this, Izuku secretly clenched his fist, unable to make eye contact with the other boy. He wanted to tell Katsuki that anyone could make a difference, no matter if they had unstable quirks or lacked one, but he couldn't. Katsuki intimidated him to no end.

*BOOM!*

Looking up, Izuku noticed that Katsuki had activated his quirk to burn his notebook before tossing it out a window. Not wanting to lose it, he stuck his head out of the window, desperately trying to see if he could find where it fell.

"Like I said, no amount of research is going to cover up your flaws," Katsuki told him as he continued searching. "Just give up. You know, if you really want to be a hero, you should just go jump off a building and hope you get a quirk in your next life."

Horrified at what he just heard, Izuku began glaring at his bully and was prepared to tell him off, only to back down when he noticed several small explosions coming from his palm.

"Got something to say? Tch, you can't even defend yourself. Whatever, I'm done here."

Watching the boys leave, Izuku clenched his fist, trying to hold back tears. He wasn't going to let Katsuki hold him back from his dream.

0000

After his encounter with Katsuki, the boy went searching for his book, finding it inside the school's fishpond. Shooing the curious sea creatures away, the boy was glad to see that despite it having been burned and then drenched, the book was all right. He then began walking home, only to be attacked by a sludge villain who wanted to use his body to evade the hero chasing him. Being absorbed into his body, Izuku passed out, but not before he saw his idol All Might take out the bad guy. Making sure he was ok, All Might then left the scene only to discover Izuku was clenching himself on the hero's leg, desperately wanting to ask his hero if he could become like him even without a quirk, wanting some reassurance that his dream could be accomplished. This led All Might dropping Izuku off on a building, leading the aspiring hero to discover a dark secret about his idol. After a battle with a supervillain, the amount of time All Might could use his powers for became limited, decreasing as the years went by. Nowadays, he can only use them for about three hours before reverting into a shell of himself. It was then Izuku asked his question.

"Can you become a hero without a quirk?" All Might asked, repeating Izuku's question. "As you know, quirks aren't everything when it comes to being a hero…"

'Yes!' Izuku's eyes widened in glee, believing to already know what All Might was going to say. He was going to say that even though quirks make it easier to be a hero, they aren't needed, before repeating one of his catchphrases: anyone can be a hero.

"But not having a quirk? No, I don't think you can become a hero."

'What?' At this moment, Izuku could hear his heart shattering into millions of pieces. The man he practically worshipped more than anything, the man who was known to always spread hope not matter the situation, the man he wanted to be, effectively told him what everyone else did. He was worthless.

"It's nice to dream kid, but you also need to be realistic."

'I'm so sorry!' His mother's voice echoed in his head as All Might continued talking.

'No…'

"If you really want to help out, try becoming a police officer. Sure, they're constantly ridiculed for being less effective than heroes, but you'll still be helping others."

'Like I said, no amount of research is going to cover up your flaws. Just give up.' He could practically see Katsuki laughing at him right now.

'Why? Why does no one believe in me? Does being quirkless really make you useless?'

All Might then said something about how he could leave the building before ditching him, but Izuku couldn't care less. Everything said about him came flooding back, about how he couldn't do anything without a quirk. Normally, he would've ignored those thoughts and go on his merry way, but after hearing the exact same thing come out of All Might's mouth, he couldn't no more. All the taunts, all the bullying, everything he went through: they all held some truth, it only took All Might to make him realize this.

'Fine world, you win. I won't become a hero. Happy?'

'You know, if you really want to be a hero, you should just go jump off a building and hope you get a quirk in your next life.'

'You know, maybe he's right…'

0000

It was now nighttime and Izuku had just made his way to the top of the building where his dreams were crushed, having gotten back up via fire escape. With his drive for living effectively killed, he was going to remove himself from the cruel world he called home. Perhaps in another universe Izuku would've followed the huge explosion that occurred after he left the building and would've found something to motivate him to keep going, but in this one, he simply ignored it, not having any reason to check it out. He only cared about killing himself now, nothing else mattered.

'Well, I'm here. Let's do this…'

Deciding to get his death over with as soon as possible, Izuku closed his eyes before falling off the building, ready to accept the sweet embrace of death…

0000

No one knows how the universe was made, mankind still not having figured out the answer. The truth is, the creation of the universe and the existence of all its major aspects such as time and space are all due to cosmic entities. Eternity, Death, Order, Chaos… each are controlled by a certain entity, all working together to balance the universe. Though these cosmic entities are extremely powerful, there is one far above their collected might: the Phoenix Force. The avatar of life and passion, the force of rebirth and reformation, the Phoenix Force has one characteristic it's brethren don't: it is multiversal. Unknown to those who aren't a cosmic entity, different universes exist, each with their own Eternity, Death, Master Order, Lord Chaos, etc. This isn't the case with The Phoenix Force. Only one exists, it traveling though the different universes to do its job. What's the purpose of the Phoenix Force? Simply put, it is in charge of creating universes in addition to destroying any universe that has ran its course. Instead of destroying, sometimes it'll reform a universe, causing it to change from what it once was.

It should be noted that if the Phoenix Force desires to visit certain planets, it would require a host to do so. Being an immensely powerful being, its sheer presence can cause the death of an entire planet, something which could serve as an inconvenience to the Phoenix Force. A host would allow it to walk among the masses without them seeing its true form. The Phoenix Force determines the host it uses, anyone else who tries to claim its power would be killed instantly.

Currently, the Phoenix Force was watching Universe 173 (aka: this universe) and has decided it was in need of reformation. Knowing what it must do, the cosmic entity prepared to gather its host, this being one of the instances where it needs one…

0000

When Izuku closed his eyes and fell, he expected to feel a flash of pain before drifting into the afterlife. What that didn't happen, the boy began questioning why this was. He knew the building he chose was tall, but free falling down it should take at most three seconds. It's been way longer than that at this point. Wondering why he hasn't hit the ground yet, the boy decided to open his eyes, only to be greeted with darkness.

"What's going on?" He asked himself as he continued to look around. "Am I dead?"

Curiosity and nervousness taking over, the boy stood up, surprised to see he could still feel his limbs. "Ok, so I'm not dead…"

Continuously glancing into the dark void, the boy decided to walk around. Looking down, he was surprised to see he was walking on nothing. Stomping his foot, the boy swore he was walking on some sort of surface, but his eyes were telling him nothing was there. "Weird…"

Shaking his head, he continued moving forwards. For a while, the only thing he could see was the darkness surrounding him, but soon, his eyes caught a glimpse at a small light. Making his way towards it, he was surprised to see the source of the light was a small ember.

"Izuku Midoriya," a thunderous voice said, startling the boy. "I've been waiting for you…"

Nervous and curious, Izuku wanted answers. "Who said that?"

"I have."

Turning around, Izuku couldn't find the source of the voice. The only visible thing he could see in the dark abyss he found himself in was the tiny flame in front of him "W-who are you?"

"Who am I? I am that who has existed before creation. I am that who is responsible for bringing life or death to a universe. I am the ultimate judge, jury, and executioner. I am…" Just then, the tiny ember began dancing before exploding in size, causing Izuku to cover his eyes with his arms. When he finally removed them, he was surprised to see a large bird covered in fire staring at him. "The Phoenix Force!"

At this moment, the boy could only look at the bird, so many thoughts racing around in his head. He was supposed to be dead, but he wasn't. Instead, he was talking to a large bird which was claiming to be some sort of God. "...What?"

"It is as I said," The Phoenix Force said. "But enough about that. There is a reason I have gathered you here."

"There is?" Izuku asked, wondering what a cosmic entity wanted with him.

"Yes. Your universe has strayed on a path which it was never meant to. Continuing down said path will only cause me to have to destroy it."

"D-d-destroy it?"

"Do not worry, for not all hope is lost. Your universe can still be reformed for it can be steered into the right direction."

"So how can my universe get back on track?"

"To do so, your world must want to reform. Reforming the world is a job my host undertakes. If they are successful, then I leave their universe alone. Otherwise, you already know what must be done. This is where you come in. Izuku Midoriya, you have been chosen to become my next host."

Upon hearing this, Izuku could have sworn his body stopped working for a split second. "What?"

"You have been chosen to be the one in charge of reforming society."

"B-but why me?" The boy asked. "I don't even have a quirk."

"A quirk does not matter in this instance. Your universe is only one of the few where such a thing exists. I've have billions of hosts who lack any sort of power and some of them have been my most successful to date."

Izuku felt his heart speed up in pride. The Phoenix Force chose him even though he didn't have a quirk. That was more than a reason to feel proud. "So how would I go about reforming my universe?"

"Simple, find the root of society's problems and shatter it. In your case, it's quirks and the heroes it has brought up."

"The heroes?"

"Yes. Have you noticed that most of the heroes in your world are after money and fame? How they hog the spotlight after defeating crime?"

Taking in what the Phoenix Force was saying, Izuku realized it was right. Most of the heroes he's followed always loved being in the spotlight and all of them had amazing quirks to help them.

"When this universe was created, heroes were supposed to be something different, but somewhere along the lines, their initial design was ruined, giving you the ones you have today. As such, I need you to destroy the hero society and revert it back to its intended form. Otherwise, I'll have to consider your world 'unstable' and remove it from existence. Having heard my story, will you take my power and reform your universe? Or will you deny taking such responsibility? Doing so will force me to send you to the afterlife. What will it be?"

Once the Phoenix Force was finished speaking, Izuku began thinking about his options. On one hand, he had (although recently) learned how toxic the hero society was. To become a hero, all you needed was a quirk. What about having the drive to save others? Apparently, keeping an image was more important. Even All Might fell in this category. He always raved on about how anyone could become a hero, but when presented with a challenge (the challenge being if his advice could apply to those with a lack of a quirk), he backed down. If he didn't believe in his own message, why spread it? There was also the fact Katsuki would most definitely become a hero. It didn't matter how many people he made miserable, he had a flashy quirk and that's what matters in the end.

'...I'm not going to let the world continue the way it is. I can no longer watch as those who deserve to be heroes get shot down due to their lack of a useful quirk. The strong will no longer pick on the weak, that's a promise!' Looking at the Phoenix Force, the boy gave his answer. "I'll do it! I'll carry out your will."

"Excellent. Izuku Midoriya, you will now have my power, the power of the strongest being in the universe! Take it and use it to reform your universe!" Without warning, the Phoenix Force lunged at its host, entering his body. Doing so caused the boy immense pain, making him drop and clench his eyes shut. Eventually, his body couldn't take it anyone, Izuku drifting into a state of unconsciousness.

0000

The next time Izuku opened his eyes, he found himself on his back, staring upwards at a familiar looking building.

'That's the building I jumped off of, which means I'm at the bottom. But wait, why am I not dead?'

Shaking his head, he stood up and checked his body, surprised to see he didn't have any broken bones on him. 'What…'

Blinking, he began clenching his head, an immense jolt of pain flaring up inside his head without warning. A second later, the memories of his encounter with the Phoenix Force shot through his head along with so much more. Mastery of his powers and knowledge on everything that had to do with his universe also coursed through his head, surprising the boy. When the Phoenix Force said the boy would have all of its abilities, it wasn't kidding. Glancing at his hands, he summoned two small fireballs and watched them dance. He now knew his purpose. No longer was he going to try and become a hero. He was going to be something bigger: a God.

"I hope you're ready world," Izuku said, staring at the night sky. "Because here comes the Phoenix…"