3rd Pov

Today, the shipgirls are another tournament, the game mode is all out Battle royale, The four powerful faction: The Sakura Empire, IronBlood, The Eagle Union, and Royal Navy are going to start the tournament but what they don't know is that they were watched by someone, that person wears a black shirt with vest on and wear a phantom mask but he got eyes of each faction, that person is Y/n Omegasis.

Y/n Pov

This is gonna be interesting, well let's see how grown up and strong my sisters all these years. I hope they will forgive me for this after i disappeared all those years.

The countdown begins.

10

9

8

I look at Ironblood side and their Flagship was my sister Bismarck and i can't believe you've grown my little iron devil.

7

6

I look at Eagle Union side and their Flagship was my other sister Enterprise, heh... I can't believe how strong you are now all these time my little eagle.

5

4

I look at the Royal Navy side and their Flagship was Queen Elizabeth, royalty as always eliza and i saw my sister hood being a true formal lady for the Royal navy, i'm proud of that she can be quite formal to others.

3

2

Last but least I look at the Sakura Empire and their Flagship was Nagato, So you finally become a new leader for the faction and my little sister Amagi along side akagi and kaga too.

1

0

The Battle Begins

It may be a battle royal, but I saw two different fight that interest me to see who will prevail:

IronBlood vs Royal Navy

The Eagle Union vs The Sakura Empire

The battle between the 4 of them is really intense, anyone could see the determination in their eyes, that nobody want's lose, A 30 mins passed and the royal navy our out of the game and the ironblood shipgirls won their match, next is the battle between The Eagle Union and The Sakura Empire and after a 15 mins passed the sakura empire have lost, But now The Eagle Union Shipgirls are now victorious and they earned the title as champions.

I smiled at their victory and can't wait to see how strong they can be, time for the test of my 4 faction sister.

Y/n:*Mind* Let's see how they are strong against me.

I change my eyes to the normal and use my siren powers to take a coat to cover me entirely, and put my phantom mask on to cover my face and my appearance and I teleport me to them.

Enterprise Pov

We did it, we won the tournament, we are going to celebrate with rest of the shipgirls of 3 factions when we were interrupted by someone with a coat walking to us, I was going to speak bismarck, hood, and amagi speak before me.

Bismarck: Who are you?

???: I'm just here to see and test the strength of the today's champion.

Hood: Why do you want fight against are friends and allies.

???: To see how great their skills and performance, it entertains me more to see what they can do.

Amagi: We are stronger together and what do you have to do from that.

???: All of you will fight me and give a good entertainment.

Everyone frowns and I answer.

Enterprise: Alright, We will fight you.

The all of us prepare himself of an attack and I saw his eyes changed orange and I heard him saying.

???: Umbra Blade.

Suddenly, out of nowhere a black scarf katana appear, the four of were shock but it did not stop us from losing our determination.

Nobody make a move, analyze the situation and

The unknown man make a move, he run up to us and jump with his blade to make a horinzontal shot who is block by zuikaku, he then do a back and front flip to dodge incoming fire from the cruiser, destroyer and battleship, Zuikaku and the others who can attack with melee fight him but he block every attack from every side and shots, i anticipated his jump and aim my bow to hit him. I shot him but only hood, when his hood was vanish I and Bismarck, Amagi and Hood saw a familiar mask, it was the mask of our brother, We were shocked as well everyone we came out of the shock and I ask.

Enterprise: Where did you get that mask?

???: ...

Bismarck: *yelling*Tell us now where did get it?

???: This mask belongs to the person that I exterminate and what's his name again, oh yes... Y/n Omegasis.

Everyone is gonna cry even myself, Our beloved Big Brother/Onii-sama was killed by that phantom killer...By that man.

The sadness of the 4 faction shipgirls is replaced with anger and vengeance. The attack against the Merciless brother killer became more powerful and more faster we could see he have impressive strength and speed to dodge our assault and continue to block to defend himself again.

Then every carrier including me with my brother's bow come together and we launch every plane we got but what happened next shock us all and make us cry.

Y/n Pov

Y/n:*Mind* Now's the good time to reveal myself.

I jump back and high to the sky, I reveal my black shirt and change my eyes to the 4 faction eyes and summon my ship and launched my jet fighters, and they destroyed every plane, I then look at my sisters and I took my Harmonica(Orbica) and play the song they heard and loved.

https://youtu.be/3MT-d1fi-AM

(A/n: I know that you guys are thinking why i put this music in, because i can't find that relate the harmonic music. So i go with the this one alright and please no negative comments.)

When I finish the melody, I took my mask and I smiled at them.

Y/n: It's good to see you all again my dear sisters.

I then go down of my ship to greet them and I walked up to them to get hugged by everyone from the  4 factions.

Everyone of the 4 faction: Big Brother/Onii-sama, you came back to us

And they began to cry more.

 Everyone of the 4 faction: Please, this isn't a dream

I smiled and answered.

Y/n:*giggile* It's not a dream my dear sisters, I'm back home again and I promise that i will never leave your side again.

We stop the hug.

Everyone: Welcome back Big Brother/Onii-sama.

I saw some shipgirls from the same factions as my sisters are now looking at us.

Y/n: Can you please present me to your friends and your new siblings from the each of the factions, last time i was here, I never saw them before of they weren't created.

Enterprise took my hand and said.

Enterprise: Let us do the honour to present to you our brother and meet them, right everyone.

Everyone: Yeah!!!

Bismarck: I missed you so much my big brother.

Hood: Me as well big brother.

Amagi: I am too Onii-sama.

Y/n: I miss you all too, Let's not waste time it's time to greet your friends from each of them.

They lead me to them and the others follow

It's time to meet the other shipgirls maybe I can find someone that interest me and entertainment for me as well.

https://youtu.be/2U02mx-ZMPw

(Note: This chapter was a bit shorter as i expected to be but this week i can make the other chapter a bit longer than 1000 words than this it only reach of  a lot words to do so the next chapter is Y/n will meet the shipgirls that he didn't meet before so have gun reading it...Hope you guys enjoy)