Izuku the fullmetal hero

Brothers fighting together

Quick  up this chapter is going to be short since it's only a fight

The gang where running down the hall
This is after psycho girl shows up and the building had calmed down again
Katsuki: hey bro aren't you worried about your teacher
Izuku: not at all the enemy probably called her a hag or something and then she beat the crap out him
Katsuki: hmm so no need to worry got it
Suddenly they enter a room which has two random suits of armour one is tall with a katana and the other is sampler and fatter with butcher knives
As all of them enter they armour starts to move
Slicer: so you are the heroes causing a ruckus
Barry: I can't wait to cut you all up

Izuku: ok I'm seriously confused
Katsuki: i know right why his are there moving suits of armour

Slicer: oh right we'll someone who is incredibly powerful was able to transfer our souls into these suits of armour before we where executed

Izuku: so you guys are

Barry; yup cereal killers
Izuku: so let me get this straight you two where cereal killers and then I assume you where captured and where going to be executed but someone transferred your souls to those bodies

Slicer: your a smart one

Slicer: so anyway we can't let all of you get passed us so we're going to kill you all here

Izuku: yeah no you're getting taken down right here
Katsuki: yeah and me and my brother are going to do it together
Izuku: that's right get ready to be turned into scrap metal
Katsuki: we are going to dismantle you

Izuku: you heard the man guys go on head and help lemillion
Nighteye: right just don't die
Aizawa: yeah remember don't let your guard down

The others leave

Slicer: heh we only let them leave because we plan on hunting them down after we kill you,
Izuku: you mean if you kill us

Barry suddenly jumped straight at bakugo

Katsuki: large explosion

He blows Barry away

Slicer goes for izuku but izuku catches the katana and it explodes

Slicer ugh you destroyed my katana no matter suddenly he places his hand on his broken katana and it raptors it

Slicer
Quirk repair
He can repair anything he wants even if has been almost completely erased all he needs a small piece of it and dam mela eat good as new he can also use this to duplicate things for example he can use a sword handle and blade to make two separate
Weakness if it has been broken for more than three minutes then his quirk won't work

Izuku: how do oh have a quirk

Slicer: I told you someone extremely powerful did this too us so we can still use our quirks

Katsuki suddenly dodges a thrown butcher knife
Barry: don't get distracted when you're fighting Barry the chopper

He suddenly feels a blinding pain in his arm

Katsuki so that's your quirk

Barry
Quirk Torture
When he misses with something he can use it to make the person the item was nearest too for feel the pain of it hitting them
In this case he felt the same pain as if his arm was cut off 

Katsuki was now struggling with having a blinding pain in his arm

Katsuki: damn your quirk is a pain literally

Barry: I know used to love torturing my victims before killing them making them feel the pain of the limbs being cut of countless times before actually doing it

Katsuki: do you think a bit of pain is going to stop me as long as I can still work my body I am going to take you down

Izuku: heh so it seems we've turned into a one v one not I mind

Slicer: I prefer it this way as well

Izuku: now let's go

It turns his arm into a blade they get into a massive sword fight constantly clashing and blowing each other back

Izuku: damn I'm never going to beat this guy in a hand to hand fight I need to start thinking
He claps his hands and reverts his arm back to normal

Slicer: are you going up now matter I'm going to kill you anyway

Slicer goes straight for him but in that instant he grabs slicers katana but with his normal hand cutting it
  Izuku grunts in pain but pushes through and uses quake alchemy right at his cheesy blasting him back and taking his and off

Izuku finally gives a more understandable sound of pain

He walks over to slicer
Izuku: I've won it's over

With katsuki

Katsuki: hey it seems my brother has won time to finish you off

Barry charges recklessly at katsuki but he's keeps dodging but every time he does he starts feeling more and more pain

Katsuki uses a quick explosion to blow Barry back

Katsuki: hey Barry have you heard of anime

Barry: yeah but it's overrated

Katsuki: my brother has finally convinced me to watch it and I've been binge watching a ton of it and one of my favourites is fire force and the main character gave me a few ideas

Barry: I don't care
Barry jumps off the wall and starts flying towards katsuki

But katsuki blasts of the ground using his feet and does a few flips before giving Barry a massive axe kick to the back and then blasts off again and jumps of the ceiling turning over and over again

HOWITZER IMPACT!

katsuki completely obliterates Barry apart from his helmet
They walk towards each other and fist bump

Izuku: nice moves bro I know you where hooked
Katsuki: it's funny we're both dub watchers and we always get abused by purists
Izuku: yeah it pisses me off
Katsuki: anyway let's take care of these guys

They grab their heads

Izuku: so do you want us to kill you

Slicer: yes please

Katsuki: you should of died along time ago
Izuku: agreed

They both scratched the blood seal despite Barry's protest

That's a rap
This was longer then expected but it was fun to write