05/14/2023 Update- After so many complains of people saying that my writing isn't the greatest in this story, I told you that English isnt my first language and I am not a professional writer. Finally I got a beta for this story and they are helping me to fix this story. Thanks Xelaki for fixing some errors that I have forgot. Thanks for the patience and here is the chapter fixed.

Here with the first chapter of this crossover. Unlike the first My Hero x Demon Slayer story this one will have a ton of changes from the original story. So please be calm, this will have some distortions and liberty with the main story. This will be focusing more on Izuku and his journey as the first hero who has the power of a demon slayer. Also if you all are wondering Tanjirou and the gang exist in this world but they are with their own master, Izuku will be direct to Ubuyashiki. Thanks.

Also, shoutout to my beta, Xelaki

-Aldera Middle School-

It was the roll call and one certain green-haired student wasn't having a good day.

''Izuku Midoriya.'' Said the teacher.

''Here.'' Said Izuku all sad.

The kids were all chattering about the events of the last day where the number one hero All Might defeated a sludge villain in one punch. While that was a great day for All Might, that was the same day that the hero destroyed his dream.

''I´m sorry kid but you can't be a hero without a quirk. You should find a new career.'' Said the number one hero bashing his dream.

Izuku after that just went home and cried until his sleep. He need it to get rid of all those All Might merchandise, he couldn't stand to see the man that destroy his dream be all over his room. He would do that later.

While he was sad another boy was just mad.

''Now kids we all know that Bakugo is still in shock, so let's give him some time. Is that ok Bakugo?'' Asked the teacher to Bakguo.

''NO! I AM FINE!' Scream Bakugo hating to being seen as a weakling.

''I can't believe that you couldn't get out of that smile villain.'' Said a random classmate.

''I guess he is not that powerful.'' Said another random classmate.

''I don't think U.A. will let you go after that fiasco.'' Said another classmate.

Izuku could only see Bakugo just scream like there is no tomorrow. He was all quiet and decided to not get Bakugo attention he already suffers enough but that bully would just go to him just to get a punch and other things.

While he was thinking of his future the teacher was doing some checking on homework.

''Midoriya did you finish your homework?" Asked the teacher.

''Sorry, I did it.'' Said Izuku.

Izuku just handle the paper and got a 10. He was just doing his usual work and got used to it. As the only quirkless kid in school, he was going to get picked up at some time in the day.

After class.

''Midoriya, I saw you spacing out most of the day. Be more focused next time.'' Said the teacher.

''Sure…jackass.'' Said Izuku, whispering the last part

''Hey! What did you say?" Asked the teacher.

''Nothing, I was thinking of jacks and apples.'' Said Izuku.

''Oh…ok?'' Said the teacher confused.

Izuku walked out of the middle school. Bakugo must have shouted some crap, but Izuku just ignored and prayed for a miracle on that day he didn't charge at him. Izuku just wanted to go home and try to cheer up, but he didn't know what to do. He didn't want to go full psycho and tear all the All Might posters because his mom would see the problem and he didn't want to give her all that weight that he received on that day.

While walking towards his house he couldn't think of something.

''How can I be a hero?" Thought him.

Izuku was soon in his house and just went to his bed. He just wanted to try to forget those words, but he couldn't they were stuck on his head since that hour.

The boy didn't know what to do. Being a hero was his dream ever since he was a little kid when he saw All Might for the first time and now the same hero that inspired him destroyed his dream. All he wanted was to just try to survive middle school and go to whatever High School accepted his quirkless ass. He soon look out of his sheets and see it was already dark.

''Is it already night?'' He asked himself looking out the window.

Izuku just saw the endless All Might merchandise in his room and he decided to go out to get some fresh air.

''I need to head out.'' Said him all sad grabbing a jacket.

''Izuku where are you going?" Asked his mother seeing Izuku heading out.

''I am going for a walk, I need to clear my head.'' Said

Izuku.

"Why, did something happen today?" Asked Inko in concern

"Yeah, but, don't worry about it, I'm ok"

''Ok... but come

home early, got that?.'' She said, not wholly convinced

''Yeah, I got that.'' Said Izuku, giving her a smile and trying his best to hide his sadness but she could see right through.

''Alright.'' She said with a little sad smile.

Izuku didn't want to tell her the truth yet. She would flip out and try to destroy All Might's reputation, but he felt that this would be a waste of time since All Might was always depicted as the good guy in the media.

''Be careful dear.'' Said Inko

-In the city-

Izuku was walking in the city with no destination. He was just a sad kid trying to be alone with his thoughts and not think about heroes. However, it's difficult when the thing that you are trying to avoid it was everywhere.

''Come on in and join U.A.…'' Said the voice of All Might on a billboard.

The teen saw his former idol on the billboard and saw the advertisement.

''AND BE A HERO. ANYONE CAN BE ONE!'' Scream All Might.

Izuku just saw that and felt disgusted.

''Liar.'' He hatefully whispered.

Izuku decided to go back home, he didn't want to see the pictures of All Might anymore. It was giving him really bad vibes and stress.

''What I am going to do with my life?" Thought Izuku.

The green-haired teen walked to his house. He just wanted to eat dinner and maybe watch something non-hero related. Maybe watch a documentary. However, everything would soon change when, while walking and thinking he bumped into someone.

*BOMP*

''I'm so sorry sir, I wasn't paying attention.'' Said Izuku, bowing to the man

''It's ok kid.'' Said the man.

Izuku saw that the man had pale skin, red eyes, and dark hair, wearing a white fedora and a suit. The man looked like someone very young and in a hurry. The man left quickly, so fast, Izuku could barely see him going.

''Huh?" Asked Izuku seeing something on the floor.

He saw

that the man had dropped his wallet

''He dropped his wallet.'' Thought Izuku.

Izuku wanted at least to give his wallet back, it was the only decent thing he could do. This didn't need it a quirk just look around. But after 10 minutes he couldn't find the man in the busy street.

''Where is he? Should I turn it in at a police station?"

He even looked to see the name of the person and there wasn't any driver's License, ID, or any documents. Just some yen and keys.

Izuku kept looking around and he then saw the man with a white fedora going towards a black alleyway.

''I found him.' Though Izuku.

He soon went towards the alley not imagining the horror he was about to see.

'Sir you forgot your…'' Said Izuku seeing something that was like a scene from a horror movie.

The man was eating a couple and their children alongside two overly grown things that had human-like faces. One was a grotesque thing with horns and a liquid face and the other had wings instead of arms and black eyes. All of them had fangs and blood in their mouths.

''Dammit.'' Said the leader of the demons.

Izuku was just there shaking in fear and with a ton of thoughts in his head.

''What?" Asked Muzan

''Your wal…le…'' Said Izuku unable to finish this sentence.

The teen dropped the wallet and got away from that scene as fast as he could.

''AAAAAAH!'' Screamed Izuku while running away

''Damit.'' Said Muzan pissed and with his eyes red.

Izuku ran away as fast as he could as the man talked with his two lackey demons at the moment.

''He saw the whole thing!'' Said Muzan pissed.

''Lord Muzan what should we do?'' Asked the melted face.

''Capture him.'' Said the man, now known as Muzan.

''What? Are you sure my lord?" Asked the winged one.

''I will see if he is worth and if not we will devour him. Don't be seen.'' Said the lord of demons.

''Yes my lord.'' Said the two demons

The lord of demons saw his two lackeys go away as he continued to feast on the flesh of that poor family.

''You´re days on Earth are now counted.'' Said Muzan all pissed that a kid had seen him.

With Izuku

Izuku ran as fast as he could he tried to call for help but he only sounded like a crazy person in the street.

''What should I do? What should I do?" He thought, and, luckily for him he just saw a pro hero around the corner. He had a baseball bat, a baseball uniform, and a cape. A lame pro but one that could help.

*Bomp*

''Woah kid what are you doing?'' Asked the baseball hero.

Izuku looked at the pro and started begging him to help.

''Sir, please help me. There are flesh-eating monsters after me!'' Scream Izuku in desperation.

''What? Please talk slo…'' Said the pro hero.

Before he could even finish the melt-face demon appeared behind him.

''Huh?'' Said Izuku seeing the demon behind the pro on another empty alleyway. Before he could do anything, the demon shoved his arm into the pro hero's throat, killing him.

Sroggh

''Hi kid.'' Said the melted-face demon.

''AAAAHHH!" Screamed Izuku in horror.

The pro hero was dead and the two heroes soon started to feast on his meat, making him a pile of bones and chewed meat.

Izuku tried to scream again, but the pain was too much for him to even breath

''You can't escape from us.'' Said the wing demon.

Izuku looked at those two with a look of horror. He just saw true horror and it wasn't like in a comic book style, he was really going to die.

''What are those things.'' Thought Izuku.

The two soon approached Izuku who started to cry.

Izuku started letting out quiet, and painful sobs

''Shut up you brat!'' Scream the melted face one.

The demon soon gave Izuku a powerful punch.

Izuku was now unconscious and with his head bleeding. The demons licked some of the blood but don't eat him right away, they need it to wait for their lord to look at the kid. They took him towards the forest where he would check on the kid.

In the forest

Izuku was now shirtless and stripped towards a tree. His mouth was gagged so he couldn't scream and in the meantime, he was just crying because he felt he was going to die there.

''where is the lord?" Asked the winged one.

''The lord is always busy and we can't talk back or is our death.'' Said the melted-face one.

Izuku couldn't believe that's how he'd die. Eaten by demons.

He

tried to escape but he was super tied up. Try as he might, he couldn't get away.

''I am going to die here?" He thought.

Izuku then started to think of his mom and how broken she would fill upon hearing this. His school and others wouldn't care but the only person who loves him would be devasted by this. If he only had a quirk he could escape this situation.

''Hey, how about we have just a little snack?" Asked the winged one.

The melted one had a look of anger while Izuku had a horror look.

''Are you crazy? Lord Muzan will kill us for sure.'' Said the melted one

''Come on, just a finger or two. We can say he tried to fight back and got in the way. I mean is just a little taste.'' Said the winged one.

The melted one then started to get closer and closer towards Izuku and he started to lick his face.

''one little finger and it will be all.'' Said the melted face one that was ready to feast.

Izuku was shouting out in his mind he was feeling that this was it. He was going to die, but soon he heard a voice.

''Don't move.'' Said a low and cool voice to Izuku.

Before the demons could attack summon a huge attack.

''First Form: Water Surface Slash.'' Said the same voice.

A huge wave of water appeared, and it was powerful enough to shove the two demons to the back much to Izuku's shock.

''Water? What is going on?" Thought him.

Izuku then saw the two monsters getting up and catching their breath.

''Argh Arhg! Who did this?! Show your face!'' Said the melted one.

''You demons never change.'' Said a man wearing a weird-style haori, long spiky hair done in a low ponytail, and a katana on his hip. He had the Kanji for ´´Water´´ in his back for some reason.

Izuku was amazed at this new mysterious person, he felt a powerful feeling coming from him and he didn't know why.

''Who is he?" Thought Izuku.

''A hashira! What are you doing in these areas?'' Asked the winged demon.

''How about we stop the talk and just get straight to the point?" Asked the Hashira.

''Well maybe the Lord will promote us if we kill him. We can be Upper moons by the time we are done with him.' Said the melted one.

Izuku didn't know what was going to happen, all he knew is that his restraints were soon cut because of this person.

''Get out of here kid.'' Said the man all cold and collective.

Izuku just nodded in fear and ran away from the forest.

''Hey, what are you doing? We need him!'' Scream the melted face but the Hashira step in his way.

''I won't let you two get him.'' Said the man.

The so-called Hashira was soon preparing a new attack and this one was more powerful

''Third Form: Flowing Dance!'' Said him making more water than before.

The two demons were soon got by supervise by the attack and they couldn't see anything.

''You think we are scared? Fool we know all about you demon slayers, come now so we can…'' Said the winged one being cut short because the Hashira cut his head.

SLASH

''Argh!'' Said the winged one having his head roll out.

Izuku could see the fight from a safe distance and saw the results. For some reason, the demon could still walk even with his head taken off, but he was starting to evaporate or something, so he thought it was a side effect.

''How long can he stay in the battle?" Thought Izuku.

''Bastard! I am going to rip your head off!' Scream the melted face.

Izuku tried to observe and see any kind of point that these so-called demons have it. Soon he saw that the melted face was making sure that his neck was not possible to be seen.

''Their neck is their weak spot. If he cuts them the fight is over.'' Thought Izuku.

As the boy saw that it was now a 1 to 1 fight he wanted to know what will happen next.

''What is he going to do?' Though Izuku

The demon looked pissed while the Hashira looked calm and collected.

''You really think I am afraid of you?" Said the demon

''Your lord must have given you some vague promise if he tasked you with this mission.'' Said the Hashira.

''I don't care what you said about me but my master…'' Said the demon

Before he could attack he was hit in the eye with a rock.

BONK

''Ouch!'' Said the demon.

''Who did that?" Thought the Hashira

He soon looked around and saw Izuku with a rock in his hand.

''GET OUT OF HERE!'' Scream the Hashira pissed

''YOU BRAT!'' Scream the demon.

Izuku was frozen in place, the demon was charging at full at him and ready to devour him. Izuku felt he was going to die, but he felt he had to do something. If he dies, he could die at least trying to help the man kill the demon.

''I am not going to be useless anymore.'' Thought Izuku still throwing rocks at the demon.

BONK

BONK

BONK

"AAAHHH! Why in my eye?'' Shout the demon now rubbing his eye.

''Sir now! His neck is showing.'' Said Izuku seeing the neck showing.

Then it was the best time for the Hashira attack, the man soon reached and cut his neck killing the creature.

SLASH

The demon was soon decapitated, and he started to crumble away in ash.

Izuku soon saw the demons were dead. He thought he was a goner but this time he was saved by someone.

''It's over. I can't believe I was so close to death. This was not…'' Said Izuku to himself and he then got punched by the Hashira.

PUNCH

Izuku was hit by a tree and see the bruise that he got. It was a big one and the man was standing there and looking pissed.

''you idiot! What were you doing here? You could have been killed! Did you think this guy was just someone with a quirk? Wake up! He was a monster that could have killed you in a second. I don't care if you have a dying wish but this wasn't the time to play hero!" Screamed the Hashira

As he was done giving the lecture Izuku soon started to speak again.

''I'm sorry. I didn't know what to do. I already have a ton of people that call me ´´useless´´ that I felt I should just do this one.'' Said Izuku.

The Hashira soon looked a little bad, the kid must be having some personal issues, and decided to give him some tips.

''Look. I´m sorry for shouting but I wanted to keep you safe. Those things were ready to eat you, this isn't like a lame villain of the week for your town. This is serious. Anyway, just rub this cream on your face the bruise will disappear in a few days.'' Said the Hashira giving him the cream.

Izuku just accept the cream and felt that at least this talk had more sense than All Might. He didn't feel that he would like to fight those things.

''Excuse me?" Asked Izuku.

''What?" Asked the Hashira.

''Are you a pro hero?" Asked Izuku.

''No, I am not one of those clowns.'' Said the hashira.

''Then what are you?" Asked Izuku.

''I am a…'' Said the Hashira.

However, before he could answer a voice came out from his wristwatch.

''Giyuu are you there? You haven't given any updates. Are you still alive?" Said a feminine voice.

The Hashira soon looked in shock at the kid, he heard his name.

''Crap!'' Thought Giyyu

''Giyuu? Is that your…'' Asked izuku confused but before he could finish Ginyu gave him a punch to knock him out.

POW

Izuku was now out cold and Ginyu didn't know what to do.

''Crap! Crap! Crap! Crap!'' Thought him.

Soon he answered his wristwatch to talk with his companion Kocho Shinobu.

''Shinobu!'' Scream Giyuu pissed.

''What is wrong with you? Why weren't you answering?" Asked her all confused.

''There was a civilian present. He saw the whole fight and heard you saying my name.'' Said him all pissed.

''oh dear. Guess it was about to happen you clumsy.'' Said Shinobu making fun of Giyuu

''This is no time for your games!'' Scream him.

''Crap, are you going to drop him somewhere?" Asked Shinobu.

''No…I will take him to the palace. I want to know what the master has to say.'' Said Giyuu a little nervous.

''Well, it's your funeral'' Said Shinobu.

''Send 4 agents to my location. They need to clean the area and make like nothing happened here.'' Said Giyuu.

''Roger that.'' Said Shinobu.

-A few minutes later-

A bunch of people dressed in black with a white cloth covering most of their faces appeared at the location of Giyuu and he gave them orders.

''Take him to the palace. Tie his hands and for a way that he doesn't escape.'' Said Giyuu

''Yes sir.'' Said the demon slayer.

Giyuu just look at the poor green-haired kid and didn't know what was going to happen to him after this whole mess.

''You are not going to live a normal life anymore kid.'' Thought Giyuu

He soon disappeared and went directly towards the palace where the master would be waiting for the judgment of this kid. If he should be sent free or be thrown away in jail forever.

This was something really fun to do. I feel that Izuku would make a good Demon Slayer. Thank you all.