A/N if your not up to date on the manga there will be some spoilers. And my own spin on what might happen. Sorry about earlier it got published and I never caught it. Now for the real ending. Enjoy ^.^

Song 1

Song 2

Song 3

*Izuku POV*

I was currently standing in the middle of downtown Mustufu city in my full hero gear. Due to the clever work of the number two hero Hawks, Endeavor was informed of the newly reformed group the Paranormal Liberation Front. Led by none other than Tomura Shigaraki. He also provided the names of all those who sided with them such as pro heroes, police officers, ect. With that knowledge we managed to put together a counter force to a literal army trying to cause chaos. I lead the charge thanks to my quirk(s) that made me unaffected by most others. Thinking back on it, it was a hell of a ride getting here.

*5 months before*

With Eri saved she ended up becoming my daughter. She even started to call Fuyumi mom. I stopped Gentle Criminal and La Brava from ruining the culture festival. I talked to All Might and Mirio about me potentially having one for all. They put me through a hellish training regiment to in a sense unlock that power. It appearently activates when my circuits are opened when I'm pissed. Though now I can use the two separately. Almost immediately I gained an ability called black whip that was impossible to control.

*4 months before*

Me, Shoto, and Kacchan ended up taking our second internships with Endeavor. During that time he found out what we wanted to be able to gain from this. To say we powered up would be an understatement. Kacchan mastered his AP shot, as well as found other ways to apply the skill. Shoto learned the key behind one of Endeavor's ultimate skills "prominence flame". I even mastered black whip. Hawks also informed us of the PLF at this time. The message basically stated we have 4 months till all out war.

*3 months*

I went through hellish training again this time to unlock and master Nana Shimura's quirk float. During this training I maximized my mana proficiency. Though it did whiten my hair more from a small patch to a very noticable large patch. This got me some playful jabs from Kacchan and girls. Most from Nemuri.

*2 months*

With the loaming fight fast approaching nerves and tensions were running high. I had to convice the girls to stay out of thos fight. Though the convincing nearly killed me. Kacchan had told me he started dating a girl from our rival school Shinketsu. I think her name was Camie Utsushimi. The biggest surprise is Kirishima ended up dating Shoto.

*1 month before*

Really nothing happened other then going plus ultra with training to make those who are fighting fully prepared. The evacuations of both Mustufu and Tokyo started at the beginning of this month. That got finished just in time.

*present*

I put my hand on my ear piece to speak with the trust worthy heroes.

Izuku: Everyone in place?

This earned me several confirmations and some snark from the others.

*elsewhere Author POV*

In the hero Association main HQ there were 11 sets of eyes watching the video feed of Arsenal waiting to face off against the PLF.

Eri: Mommy will papa be ok?

Fuyumi: Eri dear your father is one of the strongest heroes I know so I believe he'll come back no problem.

The young girl was still concerned for her father. Not just hero the 10 women who loved him watched on. Some prayed for him to come back. Some prayed he changed his mind and stayed with them here. Others just hoped he comes back.

*Izuku POV*

I noticed movement in the distance that causes my heart rate to spike, and adrenaline to flood my system. Then it became viable that Shigaraki who was basically levitating. He also had a suit on like all for one minus the Vader like mask, but still the creepy hand over his face.

Shigaraki: Arsenal what are you doing?

Izuku: 'time for mind games' What am I doing?

Shigaraki: That's what I'm asking.

Izuku: 'boo he needs to watch more parodies' I'm here to stop you.

Shigaraki: I got an army and I'm practically a god now.

Izuku: If your a god you look awfully puny shiggy

Shigaraki: What did you call me?

Izuku: Shiggy, you know short for Shigaraki. Though maybe I should call you all for one huh. Oh! I know how bout All For Shiggy?

(Start first song here)

Shigaraki: Fuck it I'm going to kill him. I was going to let you and your bitches live cause of my respect for your father, but.....

I cut him off by driving my knee into his gut.

Re-Destro: Supreme leader!

Izuku: Now!

The heroes that had been hiding on top of buildings showed themselves and quickly started engaging various memebets of the PLF. I didn't get much time to think as Shigaraki quickly launches the quirk stealing tentacles at me. I dodge those which irritated the man child. We charged at eachother with Shigaraki going for a punch which I used my leg to hook his arm and bring it down opening up his defense. I then went for three kicks in rapid succession.

I watched as Shigaraki struggled to stay on his feet/levitating as his brain was rattled by my attack.

Shigaraki: Air canon plus quirk enhancers x10. Remember this Arsenal?

I quickly reinforce my body as I was launched at an astonishing speed. To be honest of I hadn't reinforced myself the g forces might have killed me. Next thing I knew I hit something metal based on the sound it made then passed out from pain.

*HQ*

Girls: Papa/Izu/Izuku!!

They watched as Izuku was launched away from Shigaraki at high speeds, until he hit Tokyo tower being embedded in the metal slightly. Fuyumi had to hold onto Eri who wanted to run to her father and help him. Little did the girls know their rings dimmed a littled bit.

*Izuku*

???: Papa/Izu/Izuku!

I could almost hear them call for me which was impossible as they were somewhere safe. Opening my eyes a little I noticed my vision had bits of red in it. I noticed Shigaraki casually flying over to me.

Shigaraki: I'm disappointed you were so much stronger when you fought sensei and Overhaul. Maybe of I start killing your girlfriends you'll get serious.

I heard glass breaking.

Izuku: I won't......I won't let you destroy what I hold dear!!!!

The twin colored lightning erupted from my body. Being completely visible from the door of the Hero Association. The sheer volume of power caused the ground to shake all across Japan.

*elsewhere*

???1: Do you feel that?

???2: I did, but what could have caused it?

???3: Seems like someone pissed off a magus.

*pissed off*

(Play song 2)

I looked at the man in front of me as he got launched back with OFA's lightning. Freeing myself I reinforce my legs and chase after Shigaraki. The moment I caught up with him I sent a fist into his face, when we impacted then ground a crater was made as though a bomb went off. We both got up Shigaraki tried to punch me again which I parked and punched the hand on his face, breaking his nose again.

Shigaraki: How are you beating me brat!?

Izuku: I have a reason to fight and beat you. It's called the loves of my life plus and adorable daughter are waiting for me.

Shigaraki: Then I'll just destroy every thing in this area!

Izuku: Everyone run he's going to use decay.

Endeavor: What about you kid?

Izuku: I'll be fine.

As I said that things started to get destroy around us through decay. I used float to make myself just barely about the ground. I also wrapped my body in mana which should keep me from being affected.

Izuku: You want me to.be serious Shigarkai then you got it.

(Play song 3)

Izuku:
The path of righteousness is open.
Casting the light of dawn.
As shadows flee.
Yet there are those who seek greater darkness.
So I call on the throne of heroes.
Open your gates and let forth.
The March of heroes!

The familiar emerald fire engulfed us as we were transported to the familiar sky.

Izuku: You ready Shigaraki?  Hope you got the right combinations of quirks cause you got your wish.

He said nothing and just launches the quirk stealing tentacles at me.

Izuku: Marches of Heroes full parade.  Non-leathal subjugation.

Just before they reach me a familiar blonde woman with a sword cuts them away.

???: You really need to not be so reckless.

Izuku: Where's the fun in that Artoria?

Artoria: *disappointed tiger mom*

Quickly letting Gilgamesh and Cu Culainn know to sit back as trump cards the rest of us charge at Shigaraki.  The new AFO kept using various quirks most of which just incapacitated the heroic spirits since they can't die here.  That was till a certain muscle giant reached him.  As Shigarkai was distracted by other servants Heracles grabs his arm.

Shiggy: Let go!  Don't you know I'm a god of this world!

Then Heracles just smashed Shiggy into the ground several times.

Heracles: *RRRRRRAAAAAWWWWWRRRR*

Izuku: I think he just said "puny god".

Neo-All For One: Rivets, Spear like bones, Strength enhancers x10, ect.

I saw what he was trying to do, but just as I was about to move gaia destroys Heroes March.  I reinforce my body to the maximum.

Izuku: One for All full cowling 50%

As our fist met the ground caved in a bit.  Then I started to be pushed back.

Shigaraki: Air Canon.

Izuku: Are you kidding.....

I got launched again this time at least I ended up in water.  Getting up I noticed I was launched all the way to Tokyo Bay.  I had just enough time to intercept a punch from Shigaraki.  I focus full cowl down to one arm then really push myself.

Izuku: 1000000%

I want being pushed back so I dodged to the side as his fist flys past me.

Izuku: In the words of All Might.  United States Of Smash!!

When the spray of water finished Shigaraki was floating in the water so i dragged him to land.  From there he starts laughing.

Izuku: What's so funny?

Shigaraki: I may have lost this war but I've won this battle.

Izuku: What do you.....

Shigaraki: Nova

A orangish ball of energy appears above the mad man, and before I could say anything, or react my vision goes white and I hear the sound of an explosion, followed my intense pain.

*Momo POV*

Once we thought the battle was over we made our way to Tokyo Bay.  Before we even get there a large explosion takes place.

Momo: Zuzu!

We all broke into a dead sprint with Fuyumi carrying Eri.  When we got there all was saw was a barely conscious Shigaraki laugh like a mad man.

Shigaraki: I did it he's dead.  Hahahahaha.

That's when we noticed the rings no longer gave off light.  I look at the White haired psychopath before creating a sword in my hand.  Just before I could end him my arm is grabbed by detective Naomasa.

Naomasa: If he is truely gone he wouldn't want to see you become a killer.

That was the straw that broke the camel's back as everyone breaks down crying.  Eri just looked shocked and numb.

*??? POV*

I was in a lot of pain, that is currently the only thing I remember.  I was being shaked was the next thing that my mind grasped.  As I opened my eyes everything was blurry, and all I could make out were the colors red and brown.

???2: Hey buddy do you have a name?

I couldn't remember.  No matter how hard I tried I couldn't remember my name.  Just then one word popped up in my head.

???: Arsenal.

Then I started to lose consciousness again.

???2: Shit.  Someone contact Buchou this guy's in bad shape!

End.  Sorry for the cliff hanger.  Don't worry as promised there will be a sequel.  I might pick up right where I left off or not wait and see.  Just for those curious about the ending this isnt a multiverse series.  This all takes place in one world that has all the the cross over characters in it.