I wanted this for a long time. One of the fanfics that inspired me the most was Hero Academia DxD by Dinocam3, I made two other crossovers based on that story with the blessing of the author. One I finished because I felt that things wouldn't work out between the franchise, but this one it will and I've been planning this one for months.

Why months? Because it will have High School DxD with Chainsaw Man and the Shonen that broke traditions on the My Hero setting. Now I had made a My Hero x Chainsaw Man story and I decided to finish it because I felt that I got my back against a wall with the way I established that world. There is a really good one on AO3, but in that one there aren't no devils they have quirks, I still don't know how Pochita works in that world.

Just a disclaimer, this is still in a element of Chainsaw Man, so people might die. Either from the DxD side or the My hero side.

If you want a comparison of what kind of heroes would they be like. Izuku is Captain America and Denji is Deadpool.

Another goal of mine, I am going to make the Chainsaw Man characters become strong to rival DxD. Like, one of the reasons Gege is so praised for Power Scaling is because he actually put effort and actual Math while explaining Gojo attacks, while some are like He thinks on his friends and whatever and gets the power boost. Ddraig might be broken but Pochita can be too.

Another thing, not everything will be a copy and paste from the original. There will be changes and some things that would might criticize. Another major thing I want to say is that characters will die. Its Chainsaw Man, nobody is safe so there will be death and despair, yeah its not going to be a funny and sexy story, it will be a dark ride.

I wanted to this as a kind of a dark take, because DxD never has a dark take on thing, don't go say Issei Ptsd because that's just shit, and he has recovered otherwise he couldnt be near a girl. I want to make the DxD and My Hero group feel anxiety and shock, so its not just Hey we are doing hero stuff and look boobies, no they will get trauma and live with it. That's final!

In this one will also be a character different, as Izuku and Denji are the main players with their different ideologies. Can Izuku deal with the fear devils know as he learn he is the Red Dragon Emperor? Can Denji deal being on High School with a bunch of devils? Well lets see it.

The world was always a mysterious place, there were enigma left over 2 thousand years ago and they were never answered even in the far future. Things have changed to the extraordinary when a baby in China was born glowing, like if it was natural. As the years passed people started to develop these weirds abilities which were called Quirks and from that on the imaginary became a reality, people were able to do amazing things with their unique powers and be part of a job that was seen as just a dream, become a superhero. However, not everyone was born with amazing powers, the ones who weren't born with that were called Quirkless and they were seen as a minority, despite that a lot of quirkless can grew up to become something good or something feared. This phrase became a norm among these people.

''All men are not created equal.''

In Japan there were two such individuals that would have their entire life changed, however they would have to endure the pain that it was being born quirkless in this world.

At a playground in Musutafu

A little boy named Izuku Midoriya was shaking in fear as his friend Bakugo and his thugs were picking on a little kid who couldn't defend for himself. Izuku wanting to make things right decided to step in front of the kid protecting him.

''You're being to mean Kacchan! Stop with this!'' Said Izuku shaking in fear.

The ash blonde just smirk at that while his friends just smile, he then makes some explosions out of his hands as he went to attack.

''You're trying to act as a hero. Like you could ever be one, you useless Deku!'' Said Bakugo attacking.

The afternoon Bakugo and his goons went and mess up Izuku, but the kid got away, once the coast was clear the same kid returned and went to check if the green haired was fine.

''Are you ok?'' Asked the kid scared.

''Yes.'' Said Izuku a bit sad, but glad that the kid came back for him.

The poor boy was diagnosed quirkless a little while ago and his once friend became very hostile and aggressive to him. Izuku wanted nothing more than to be a hero, but with his condition it would be impossible. At least he had a stable home and a loving family who cared for him some are not this lucky.

Meanwhile at some country part of Japan

A little boy named Denji was just seeing his father being buried, not in a cemetery but in the woods that were near the shack that they lived. Denji was quirkless, poor and never read a book in his life. His father was a drunk, gambled, used to beat him and had a useless quirk. Recently he had messed a huge deal with some Yakuzas making them lost a huge amount of money, not wanting to deal with them he took his own life at the small shack that he and his son called home.

Right now, Denji was being talked to by an old man and a guy who appeared to be his driver.

''Your father owns a lot of money kid. We will be back tomorrow, if you get the money or some way to make it back, we will let you live. If you don't, we will kill you sell your organs in the Black Market and we will pass the rest to the next person who own us a big debt. But I also don't think we can make it much, who will want the organs of a little weak, quirkless orphan kid like you. See you tomorrow, also my condolences.'' Said the old man all cold to Denji who wasn't said a word since he found his father.

It's not like Denji loved his father, he loathed him to a core to the point that he wanted to escape, but he had no idea on what to do. Now he dies and leaves his debt to him who can't even solve a simple Math problem.

''Is that it? Am I going to die?'' Said Denji all sad.

While he looked at the small cross where his father was buried he heard a weird noise.

Vrumm

''What is that?'' Asked him.

Then he looked over a tree and then saw a chainsaw, a small one.

''Is that a chainsaw?'' Asked Denji.

Then the chainsaw moved and it was on the head of a freaking dog. A small orange dog.

''No way, a dog with a chainsaw!'' Said Denji in shock.

The little kid saw that creature and was amazed by that, he heard rumors that animals and other things could develop a quirk over time.

''Even an animal has something special, unlike me.'' Thoguht Denji feeling all sad.

All his life people have told him he was useless and worth nothing. Now a days your position is earned for how much you can give to others, Denji wasn't smart, strong or had any special abilities for all the people of his region he was an absolute waste of a human being.

He saw the small Chainsaw Dog growling at him, looking like he wanted to bite him off, Denji had enough of this life.

''Go ahead and kill me. I am good as dead anyway.'' Said him crying.

However the weird dog stopped growling and fall back, he then saw a small wound on the creature stomach.

''Oh you're hurt.'' Said him in shock.

Denji was now a little frantic, he didn't know what to do, he was just a kid.

''I don't know what to do! I don't know how to treat dog!'' Said him.

He looked around as the small animal started to cry in pain.

''Maybe I can wrap you in some of my shirt!'' Scream him.

He soon did that, tear of a piece of his shirt and was going to use a branch to make sure the wound stay still, however the wood was very sharp and that cause a scratch on his arm.

Scrash

''Ouch! Stupid branch!'' Said him seeing the wound.

''bark!''

''Uh?'' Asked him confused.

Denji saw the animal growling and looking at his wound, as the small amount of blood started to appear the animal looked like he had just found his food.

''You want my blood?'' Asked him.

Denji soon lends over his arm and let the creature bite him, sucking on his blood.

''Ouch!'' Said him in pain.

The creature started to feel better and Denji saw an opportunity on this.

''Let's make a deal, you don't wanna die and me neither, plus this blood doesn't come free. You and I will work together, you will be free once my debt is paid off! In the meantime you can drank my blood with no problem and no escaping! Understood!'' Said Denji all serious while the creature just looked irritated but eventually decided to go with him.

The next day Denji was feeling much better, he had convinced the old man to do his lumber work and other things. Pochita would be the main force while he kept working to pay off his debt, it wasn't a good deal but the two were able to live on.

It's a world where power matters the most to all living beings, even not noticing that those that they look down might be holding some enormous power that would shake them off.

10 years later

At Alderan Junior Middle School

Izuku Midoriya was a shy kid, he didn't have any friends, was not very athletic and was looked down by most of his classmates because of his lack of quirk. The one who taunted him the most was still Bakugo who became even more arrogant and brutal since their childhood. Sometimes Izuku even wondered if being a hero was worth anymore.

He was in the last year of middle school; his teacher was holding some paper showing possible job opportunities.

''I know I should pass down these papers but who I am kidding you all want to be heroes.'' Said the teacher with a smile as the entire classroom show off their quirks.

''Yeah!'' Scream most of the kids excited.

Bakugo on the other hand was not showing off his quirk, doing the whole I am too cool to be like these losers style.

''Please teacher, don't give those extra any attention. None of them will even be able to reach Hero status!'' Said Bakugo with his feet on his desk.

''Oh come on Bakugo, don't say that!''

''Shut up extra! You all good for nothing side character have your 10 seconds of fame over with, while you all just waste time with your lame quirks I am going to be applying to UA!'' Scream him.

The entire class gasped; UA was the number one hero school of the whole country. That's where the number one hero All Might studied and became the strongest man for an entire generation. The chances of getting into UA were pretty low, but Bakugo wasn't scared of that.

''Of course I am not! My quirk and my abilities make me the top of the food chain, soon I will dominate that school and the entire Hero course all together!'' Scream Bakugo all full of himself.

''Hey didn't Midoriya said he wanted to apply to UA too?'' Asked a random student.

The whole class looked at the shy green haired kid who was just trying to play invisible for the entire time, however that didn't worked as all eyes were on him.

The entire class commented that while Bakugo was a short temper jerk, he at least show the results, he was number one in terms of E.D, grades and quirk test. While Izuku was also on the higher part when it came to grades, but his E.D were very low and his quirk scores were pretty much negative. All the students commented that Izuku was just trying to show off or try to get some attention, that made the poor boy sunk so much.

While Izuku was having a hard time trying not to cry someone came to see if he was ok, a girl with blue hair, purple ribbon, cute purple eyes, glasses and a bust size that made a lot of girls be jealous of her. She was Millia Takamaki, one of the few girls that didn't mind staying near Izuku and was the only one who liked to talk to him.

''Are ok Midoriya-san?'' Asked her.

''Yes, thank you Takamaki-san.'' Said him.

''don't let Bakugo words get to you. I'm sure when gives the chance, you'll be a great hero like All Might.'' Said her with a smile.

The girl's word made Izuku have a little beam of hope, he always knew that someday he would be great hero like his idol All Might.

''She is right! It doesn't matter what Kacchan says. There's a chance. There's always a chance. There has to be a chance for a someone like me to be a Hero!'' Thought him.

Izuku looked at his note as if he was studying for a test, he wanted to see what he could do to appear great in the Hero Exam that UA does.

Meanwhile, in the country areas

At a small little forest

Denji was done cutting down 40 trees, it was his quote for the day and how much the old man asked for him to do. Sometimes Denji wondered if he needs it all that wood or it was just to mess with him, the old bastard kept raised the debt over and over again.

''Ok, that's it!'' Said Denji.

The teen used Pochita as a regular chainsaw for years, making use of him as a pretty good tool for gardening. The great thing about it is that all you need was to feed blood and Pochita chainsaw would never get rusty or busted up.

''Good job today Pochita!'' Said Denji all happy.

''Bark!''

Life hasn't been good for Denji, despite the new upbring he managed to live on for 10 years which was more that he could ever imagine. However, the Yakuza kept making his life hard, giving new fees, problems and traps just for Denji. There was one time that things were so complicated that started to sell his organs to make some extra money to get those guys off his back. Denji had sold one of his eyes, one of his kidneys and even one of his testicles to get things even. He was in pretty bad health, had only one eye and a ball working, but he felt that as long he had Pochita things would be fine.

Denji soon arrived to meet up with the old man who was going to inspect if he did a good job.

''Everything is in order, good job.'' Said the old man.

''Thanks, hey old man, trees cut and it's the start of the month. Can I get my payment?'' Asked Denji.

''Sure, I am a man of my word.'' Said the old man with an envelope full of cash.

''Alright!'' Said Denji all excited.

''But I am taking off the loan and interest payment out already. Then there is the commission for referring you and associates fee, the land property that you were going, also there is your water bill, heat and all the other loans.'' Said the old man just putting more and more stuff to be taken off.

''Uh.'' Said Denji not liking this despite being something that happen almost every month.

''Let me do some calculations, I am not that fast anymore.'' Said the old man looking at his phone.

''So how much is left for me?'' Asked Denji.

The old man took out how much Denji owned him for the month, and gave the poor kid almost nothing, just 1800 yens.

''Just this?'' Asked Denji.

''Yes, good job. See you next month.'' Said the old man all cold.

Denji knew that bastard just liked to see him suffer and kept adding more and more fees, if it was just the debt that his dad owns him he would be already pass half it, but he kept adding more and more shit for no reason. He even heard that the bastard had a family, he would rather be road killed than be related to that monster. He still didn't know how the Pro Heroes never caught him, maybe heroes weren't that smart.

Another deal was that Denji could never talked to a pro hero, if he did then the Yakuza would either killed him or put all the blame into him. Either way he got his thumbs crushed to get the message and even a tooth was pulled so he could understand the deal.

Denji at this point didn't care, as long he and Pochita were fine he was happy in keep fighting.

''Let's go home Pochita.'' Said Denji to his pet who is pretty much his best friend.

The two walked down the road and they saw the old man car, very expensive and top of the line. Denji started to talk shit about him, it's not like the old man had a good hearing quirk, he could just make salt out of his hair and that's it, his Yakazu stuff was given to him for doing dirty dees.

''I guess the cheap bastard is wasting more than he can make. While us can even make a decent payment, am I right!?'' Asked Denji.

''Bark!''

''Yes, I know.''

The teen walked down the streets of the small city that he lived, it was so crappy that the heroes that stayed there were drunken or addicts that haven't been caught yet. Also, the police was all in the Yakuza pocket so they knew what to say if someone from outside went to look for a villain or something. In other words, Denji was trapped like a rat in a maze.

While walking a kid with a deer face and his mom with also a deer face saw Denji with Pochita.

''Oh mommy look at that dog!'' Said the kid.

''don't look dear, he is with that creepy no-good bum.'' Said the mom making a dirty look a Denji who just ignored it. He was at least glad he didn't look like a creepy dee.

''But his dog is so cute. I want it!'' Said the kid.

''Beat it kid, he is not for sale! Tell him Pochita!'' Said Denji.

''Bark!''

Denji just smiles as Pochita made the kid jump in fear. It was a shitty life they lived but there were some smiles along the way.

While walking to their shack Denji saw some teens a bit older than him with the so famous U.A uniform. They were going to a local bar of the area where Denji usually looks for rest to eat.

''Uh those must be students from that hero school.'' Said him seeing that uniform.

''Hey, let's get some drinks!'' Said a girl with a crystal face.

''Yeah, I brought my ID.'' Said a guy with long arms and a smirk.

The kids went inside making Denji just laugh.

''Underage drinking, man I guess these aren't all saint like the TV said.'' Said Denji with a smile.

However he kindly envy those kids, all the wanted was to have a normal life, but in his situation that was almost seen like dream. Some kids wish to become heroes when they are little, Denji wished simple things like going to school, have a nice bed, clothes and even a girlfriend. All he wanted was to be normal.

''I wish I could go to school.'' Thought him all sad.

Denji sometimes fantasizes about the good life he imagined, but soon Pochita snaped him out of it.

''Bark!''

''Sorry pochita, let's go home we will be having slice bread with no jam. Too expensive!'' Said him.

The two went to their shack that they call home, it was crammed it didn't had a sink and heat was from a busted heater that a Yakuza throwed out a Denji because he was too lazy to go to the garbage.

Denji hoped that someday he could be a normal person and have a nice life among other people he could call friends.

The world didn't know but those two would cause mass shakes and chaos through the entire universe.

So yes, we are doing a contrast of the two. Izuku is a poor quirkless kid with a dream that nobody believes he can achieve. Denji is a poor quirkless dream that the entire world looks down and he only wishes to have a normal life. Two people with very similar and different aspects in their life's.

This is a good aspect that I wanted to do it. Izuku is used to things done in the heroic fashion, but Denji seeing the horrors of the real world knows he has to do some horrible shit to get things done. This will be a good clash of ideologies.

So yeah, this is all for today. See next time!