A/N:here is the fourth and final part of the special chapter and will probably be the longest hope you all enjoy.

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(Previously)

Y/N:I'm detecting massive Armada of Sirens there and Arbiter is also there.

Alice: then we have to help who ever there attacking.

Y/N nodded at this as 1000 Cosmo Lancer Bombers appeared on his launching deck.

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(Continuation)

As Y/N then made a ship appeared this time it was an Osiris Class Carrier appear.

And then launched the Bombers towards the base.

Y/N:Alice you should head to the other ship.

Y/N said as he prepared to summon his riggings.

Alice:wait were are we Y/N?

Alice asked as she was confuse of were they are right now.

Y/N:we're in another dimension like Ares but they are less advance than are ships but there technology are advance rough to defeat the sirens.

Alice:how advance of what era are we?

Y/N:in the modern era now.

Alice:wait doesn't that mean that there are satellites we could hack in to to see what is happening over there.

Alice said as she pointed to the base that is a few miles away from them.

Y/N:I already have hack the nearest satellite.

Y/N said as he made his riggings appear and carry Alice to the other ship.

Y/N:stay here and be are eyes.

Alice:got it love just becareful.

Alice said as the two kiss for a few seconds and soon separated from each other.

Y/N:don't worry I will.

As Cleveland and the others lands on the carrier.

Cleveland:big brother what should we do?

Y/N:you bring Emily along with you sisters and handle the enemies on the east.

Y/N said as Cleveland nodded at this and Executor is the one that ask this time.

Executor: what about us darling?

Y/N:you and your sister will handle the Siren in the West.

Imperium:and what about you who are you going to take care of?

Y/N smirk at this as he summoned his two double barrel gun.

Y/N:I'm going to be the one that will deal with there leader.

Emily:are they being forced like us?

Emily asked wondering if the Sirens here are good.

Y/N:no they aren't.

Denver:why is that big brother?

Y/N:I have scanned them and there is no collar or anything that is controling them.

Columbia: which mean they doing it on there own free will.

Y/N:yes that is correct I have no other option but to kill them.

Emily:I understand Love.

Serenity:you don't mind Y/N killing them?

Emily: yes I don't mind there not like the ones in are world they are doing this on there own will so it's enough reason for Y/N to kill them.

Symphony:then what are we all waiting let's go and save them then.

Symphony said as she launched several X-wing fighters.

The others nodded at this before they head towards the battlefield.

Back at the battlefield we could see shell flying towards the sirens.

Building were destroyed and some were on fire as the battle has begun.

We could see Takao fighting a Humanoid Siren as she dodge a beam coming from the siren.

And then lunge at the Siren with her katana preparing to slice the Siren in half.

But only for it to be block by the Sirens spear.

HS1:you are pretty weak.

The HS mocked as she push Takao back as Takao landed safely 4 meters away from the Siren.

Takao: just shut up!

Takao shouted as she fired her guns towards the Siren.

As the attack hit the Siren damaging half her armaments.

HS1:Aagh you will pay for that.

The Siren shouted angrily as she launch several beams towards Atago.

Who merely jump to the side dodging the attack from hitting here.

HS1:why can't you just stay still you obsolete ship.

The HS said with a piss look on her face before firing a torpedo toward Takao.

Takao seeing this jump out if the way dodging the torpedoes but suddenly.

HS1:hahaha I got you know.

The Siren said as she appeared above Takao who didn't have time to react as the blade was about to hit her.

*Boom*

A shell went straight to the Siren immediately decapitating her.

As Takao looked to her right and see Maya.

Maya:sis are you alright?!

Maya asked in worry as she runs towards Takao.

Takao:I'm alright Maya thanks for saving me.

Takao said as she hugs Maya before they seperated from each other and then heard an incoming beam.

As the two jumps away from each other as they dodge the beam from hitting them.

The two looked to were it came from and see 2 HS Battleship infront of them.

Takao:Maya you take the left and I'll take the right.

Takao said as Maya nodded at this and pulled out her katana from her sheath before they lunge at the two Sirens.
Takao

Maya aimed her sword towards the Siren who saw this as the Siren used one of its sharp tentacle blades to block Maya attack.

The Siren fired back at Maya who mannage to jump away from the Siren and dodging the attack.

HS2:I'm gonna enjoy killing you.

The Siren said as it smiled menacingly towards Maya.

Who didn't even flinch from the menacing Aura the Siren is releasing towards her.

As Maya prepared her katana the Siren lunge at her with 4 of its tentacles aiming toward her.

As the Siren was getting closer Maya vision slowly down for a few seconds.

As she sliced the four tentacles effortlessly.

And time seems to resume back to normal.

As the Sirens tentacles were slice to pieces.

Maya:your the one who's going to die.

Maya said as she fired a salvo on the Siren.

HS2:aaagh!!! damn you.

The Siren cursed at Maya as her riggings were now completely destroyed.

Maya immediately jump towards the Siren before cutting her head off.

As the Sirens silk to the bottom of the ocean.

Takao:are you ok Maya?

Maya:yes I am fine Takao we should help the others.

Takao nodded at this as they went to help the others.

Without a commander to lead them they won't be able to organize properly to defeat the Sirens.

But the pride ship of each of the factions decided to lead them.

As the slowly mannage to organized themselves.

And had mannage to Repel the second wave of Siren attacks.

Enterprise was the one who is leading the Eagle Union Faction as they have the superiorities in the air.

Due to them having larg numbers of carrier.

While Bismark leads the Ironblood Faction as they have the upper hand on firepower and armor.

With the Royal Navy they have the advantage in the numbers of Cruiser carrying multiple missile.

And lastly Nagato was the one who is leading the Sakura Empire Factions the numbers of Destroyer and Battleship is an advantage to them.

They slowly mannage to resupply there ammunition as the third wave is approaching.

Hornet: sis we won't be able to hold the rest of the next Siren wave of attack.

Hornet said while carrying two injured destroyers to Vestal.

Yorktown: she is right Enterprise we must retreat and warn high command.

Enterprise:I will have to stay here and distract them while you all escape.

Cleveland: but that's suicide your going to do.

They all try to convince Enterprise but she firmly denies them and say she will stay at this base.

Laffey:I'm going to stay here also.

Laffey said making Javelin and Unicorn protest to it.

Javelin:not you to Laffey.

Then all of them decided to stay along with the two and will fight until the end.

The third wave was now approaching them as several Humanoid Siren Carriers ready to launch there Bombers.

Bismark: I guess this I it then.

Bismark said as Tirpitz stands beside her as they prepare themselves.

Wales:we shall fight them to the end huh.

Wales said as she ready herself while holding her sword.

But suddenly they heard the sounds of planes coming from behind.

As the all turn around and see huge planes half the size of B-2 Bombers.

Denver:wait what are those?!

Denver said as they see 1000 of it flying past them and began firing missiles towards the third Siren fleet wave of attack.

As the bombs hit the carriers and thousands of small blackhole appeared and shredded the Sirens to pieces.

Before explodding as the shockwave blew the little destroyers a few meters away.

Shigure: wait what the heck were those?!

Shigure ask as they open there eyes and there mouth jaws dropped to the ground seeing the devastation that has been inflicted.

The third wave of Siren fleet was completely destroyed.

Helena: everyone look!

Helen yelled as they saw several blur flying above them and heading towards the Siren fleet.

They all immediately resupply there ammunition before chasing after the blurs.

Then they arrived to see 500,000 HS infront of them.

Arbiter: so you all came Azur Lane.

Arbiter said with a smirk on her face as she floats above a giant Battlecarrier.

As she was about to launch the attack the blur that they saw a while fall towards the Sirens.

*Boom*

5000 HS were destroyed instantly as the smokes died down revealing Cleveland and the others.

While sending Arbiter flying away from them and crashing into another carrier.

(A/N: I'm going to put M mean modern on the Cleveland and the other shipgirls of this dimension while the original Cleveland and the girls of Y/N world has no M on there name.)

Cleveland: damn that was fun.

Cleveland said while holding her sword as the M Cleveland jawdropped to see another version of herself.

But she has different riggings than hers and looks way more advance than they have.

Denver:hey sis duck.

Denver said Cleveland duck down immediately dodging a beam before she fired back.

And blue beams pierced 10,000 HS before they explode.

While M Cleveland and the others are dumbfounded of who there seeing.

Enterprise: wait wo are you?

Enterprise asked gaining Cleveland and the others attention.

Cleveland: oh me my name's USS Cleveland I'm Heavy Missile Cruiser.

Cleveland said as she launched 30 Cosmo Lancers bombers making the Eagle Union jaws dropped to the ground seeing her being able to launch planes.

M Cleveland: but how is that possible your more like a carrier anc were did you came from?

Denver:we came from another dimension that got transported to yours.

Denver said as the saw a Siren beside her as Eagle Union aimed there cannons towards her.

Columbia: wait she's with us.

Hornet:wait if you from another dimension and she's with you all those that mean the Sirens there are friendly?

They all were surprised that they came from another dimension but knowing that the Siren also came from another dimension.

They believe that they have other counter parts in another dimension and seeing them infront of them is enough reason for it to believe they do exist.

Montpelier: yep they are and were trying to save them from an insane man that is controling them.

Montpelier said as a shell was about to hit her and the others try warn her to dodge it but her Flein Field activated.

Making the shell bounce back to the Sirens.

Akagi:oh my you all seems strong tell me who is your leader that you came her with?

Emily:it would be commander Alice and our husband.

Eagle Union/Sakura Empire/Ironblood/Royal Navy: wait husband?!

All of them were shock hearing this that they are married.

HS3:die traitor!

A Siren jump towards Emily when a bullet hit the Siren before being blast by ref beams.

Y/N:are you alright Emily?

Y/N asked as he appeared a few meters away from them.

All of the M Azur Lane ship jaws dropped seeing a male ship infront of them.

Some of them like Prinz Eugen, Akagi, Nagato ,Cleveland, Admiral Hipper had a nose bleed on there face.

While others were blushing like a tomato and the little destroyers had stars in there eyes seeing a male ship.

Y/N has 3 carrier deck floating on each of his side while 12 Four-barreled Mk32 Railguns floating behind him.

He is wearing a white trench coat and a Admiral hat.

Emily: love you have just arrived in time.

Emily said as she hug Y/N making the M Azur Lane girls jealous.

Y/N:I'm glad that you are all fine but we have some Siren to deal with and it seems they have brought the whole Armada.

Y/N said as he look inftont of them and see the Armada being decapitated by the five Executor Class Super Star Destroyers.

M Enterprise:wait who are you mister?

Y/N:it's Y/N miss Enterprise

Enterprise: wait how did you know my name?

Y/N:well you look exactly like my other wife back home.

Y/N said making M Enterprise blush furiously as the others were suprised at this.

M Bismark:wait what type of ship are you?

Y/N:I'm am know as Super Battlecarrier Dreadnought.

This statement alone made there jaws dropped to the ground he was a hybrid of all types of ship.

Y/N:how about we all talk later and handle the Sirens here first.

M Hornet:but some of us are injured and won't be able to fight.

Y/N:is that so well the let me all help you with that.

Y/N snap his fingers and several Wisdom Cube appeared and flew towards the injured ship.

As a bright light enevelop them before the lights fade away as everyone jaws dropped to the ground again when they saw all of there family and friends all healed up.

Y/N:there your all healed up I will handle Arbiter take care of the rest of the Siren Armada.

Y/N said before he flew towards were Arbiter is currently at.

M Nagato:how did he do that?

Cleveland: it's best if you don't asked even us don't know how he do that.

Cleveland said as she fired a corrosive missile to a group of HS ships.

Denver:are you all going to stand there and watch?

Denver asked as she jump out of the way dodging a beam from hitting her.

The M Azur Lane girls all snap out of there surpised stat and began helping them.

Meanwhile with Arbiter we could see her coming out of the carrier she got blasted into.

Arbiter: wait what the hell was that?!

Arbiter asked herself as she looks to what is now happening and she look in disbelief seeing 5 ship she has never seen before.

And looks more advance than any of the ship the have fought.

Arbiter: no Azur Lane couldn't possibly make such ships.

Arbiter asked herself as she see the five Executor Class Star Destroyers firing green beam on her fleet.

Just then a missile was heading towards her as she dodge it.

And the carrier was shredded by a blackhole before explodding.

Arbiter: what the?!

Arbiter was shock at wat just happened until she turned around to see a male standing infront of her.

Arbiter: a male ship how is that possible?!

Y/N:that is something you'll have to find out.

Y/N said as he fired a barrage of beams towards Arbiter who saw this and immediately activated her forcefield.

The beam hit her forcefield and Pierce through it.

As 2 of her cannons were immediately destroyed.

Arbiter: Gaaaah!!! Damn you I'm going to kill you.

Arbiter furiously said before firing a barrage of beams towards Y/N.

Y/N:I have heard that a thousand time.

Y/N said while rolling his eyes at this as it made Arbiter even more piss.

As she summoned multiple Fighter jets and made it fly towards Y/N.

Y/N seeing this summoned his own Interceptors to intercept the Planes.

Y/N planes won as it was far more superior than Arbiters.

Y/N:is that all you got I was expecting more.

Y/N taunted making Arbiter anger explode like a volcano as she fired another barrage of beams towards Y/N who merely opened several Mirror Ring Gates.

Arbiter appeared infront of Y/N as she tried to pierce Y/N heart with her cannons.

But Y/N aimed his guns at her cannons destroying it immidietly.

As Y/N then kicked Arbiter in the face and sending her straight towards a battleship.

As Y/N then put his guns away and then activated Pandora Box.

As his power increases by 500% and immediately activated the energy manipulation.

As he began to absorb the energy within the Antimatter Realm

Y/N:ok I have enough fooling around time to get serious.

Y/N said as 100 Super Gravity Ring Cannon appeared behind him.

As he then put the Antimatter energy he absorb into the rings.

Y/N:goodbye Arbiter and may you rest in Ashes.

Y/N said before firing his Super Gravity Ring Cannons.

As a Black and Red beam fuse into one large orb that immediately went straight to Arbiter.

Arbiter:NO THIS CAN'T BE THE E-AAAAAAAAAGHHH!!!!!!

Arbiter last said before she was annihilated and the beam hit the rest of the fleet.

As Cleveland and the others deploy there shield to protect everyone from the blast.

The blast was so bright the whole with could see it as Alice activated a shield that cover the whole battlefield preventing the blast from destroying.

The base and the rest of the whole world.

Timeskip

3 days after what would be mark as the greatest battle in history for humanity.

The great war between the Siren has ended and the world celebrates it.

As it mark in the year 2026 at January 31th the great 80 years Human-Siren war is now over.

Back at the Azur Lane Base we could see everyone celebrating as they can finally rest.

And can live a normal life now that the Siren war is over.

Y/N and the others could be seen in a large field with a concert stadium a few meters away from them.

Cleveland: so why are we still here again?

Y/N:well we did promised them go stay for the concert they will have before we will leave.

Alice:it is sad that we will be leaving them but atleast we can visit them right Y/N?

Y/N:that right I have pipointed were there Universe is and I have made a Class 12 Dreadnaught to be stationed on the Andromeda Galaxy here.

Executor: so we could teleport to the ship in order to get here right?

Y/N:yes that is correct.

Just then we could see M Cleveland along with five others walking toward us.

M Cleveland: Lord Y/N are you going to watch are concert?

Y/N:well yes we did promised to watch it.

M Akagi:oh it is wonderful to hear that you will be watching our concert.

Y/N smiled at this as the concert is about to begin in a few more minutes.

Timeskip.

Everyone has gathered to watch the concert as the all began the count down.

Everyone:3...2...1

Everyone enjoyed the song as they all celebrate for the victory they have thanks to Y/N help and the others.

Timeskip

M Javelin: Waaaahhh!!! Are you all going to leave.

M Javelin said as she was crying while being hold by M Laffey, and M Ayanami who are also crying.

Y/N:yes we have to.

Y/N said as he try to pull away the little Royal Navy light carrier unicorn from his leg.

Unicorn:Onii-chan please don't leave us.

Unicorn said with tears in her eyes as she gave Y/N the puppy eyes even though he is immune to it.

He still feel bad about leaving them during his stay here for three days he has interacted with all of them.

And all the little destroyers began to call him as there big brother.

But now that he is leaving they wouldn't let him go.

Y/N:I'm sorry Unicorn but me and the others have to go back to our world.

M Illustrious:come one now Unicorn big brother Y/N will come back but he needs to return to his family first.

Unicorn:you promise?

Unicorn asked Y/N as he kneel infront of the little girl and gave her a necklace with a crystal heart attach to it.

Y/N:yes I promise and keep this as a gift from me.

Y/N said as he put it on Unicorn who hug him before letting go.

Y/N:well this is goodbye then everyone.

Y/N said as they all burst out crying while waving goodbye at them.

As Y/N summoned his ship and they went inside.

Uzuki:*sniff* goodbye Onii-chan.

Javelin: Waaah!!! Please come and visit us once in a while.

All of them wave goodbye at Y/N and the others as the ship then warp back to there own world.

To Be Continued.
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A/N:alright that is the end of the special chapter hope you like it I'll see you all next time Author Out.