https://youtu.be/mrXfKi5jbGg

The Uchihas are now settled to the depths of the Cthulhu Kingdom, would he get the forces against the Siren Blights and getting the truth of the Siren Blight? Or they're still trapped like the first ones of the founding fathers of the Sirens, Cthulhus and the Nerubians in their history?

After they were forced to retreat from the surface, Izuna and his 6 followers were going to their Cthulhu friend, Kryzyl-Ahn's heritage tour to the Old Kingdom which was the real-world version of the old kingdom because the black wisdom cube that Orochi dropped has ability to switch realities to the world. According to the eldritch leader: The uprising was the remembrance to their ancestors that they should survive themselves and to be hostile to the unwanted visitors of the depths because of the corruption of the world.

0900 hours earlier before the Battle of Western Russia, Mariana Trench, Cthulhu Old Kingdom, Pacific Ocean

Kryzyl-Ahn: We're here, young hero. Here lies the old kingdom that our ancestors maintained their balance on the humanity. The population are dense to the seas and our Siren masters were once kind to us. But there are corrupted Sirens are the ones are unwanted visitors to our seas. The Siren masters were kind to us at once but the prince and his wife are trying to kill us. Our master's name was Saren-Arak the Wise, he was a Siren-Nerubian who ruled the seas with his sea Spider Lords and Crypt Lords, His father's name was Har-Rekhan, one of the Siren guardians, His father's best friend's name is Tar-Xerxis, and his father's uncle Thexior-Ra.

Izuna: Are all those Nerubians?

Kryzyl-Ahn: Yes, but there are half-breeds like us, Cthulhi. Like Nalahan-Naz the Blighted and other Cthulhu half-breeds. I don't know what are their names now...

Izuna: If so, what happened to him?

Kryzyl-Ahn: He was murdered by Nalahan-Naz for the throne... Because he is a bastard child out of wedlock and took the two Nerubian core coins for himself. One is his consciousness and one for the flowstone. But the other eight were relinquished and died of the mortal wounds cause to disintegrate himself into cell coins and his armors were steadily preserved.

Izuna: So, this is what happened?

Kryzyl-Ahn: Yes, he started to have a revolt against us, the Eldritch Alliance, because he broke the Alliance's will. And his wife Orochi uses her black wisdom cube to exterminate our brethren out of the existence. And the cause is our kingdom was destroyed by the couple and we fled among with the Nerubians to the sanctuary in Nya'lotha to keep ourselves alive there.

Izuna: Are your machineries still work?

Kryzyl-Ahn: Some of them. If it works... We and the Nerubians were experts of the machinery, architecture, military expansions, and strategies of war we used for the future battles. For the last millennia, we did our part to save our seas from invaders like the Nalahan's forces called the Siren Blights. Because the prince known to be as the cruelest dictator of the seas, power-hungry emperor as you have called now.

Izuna: I hope the western region were keeping them safe from the invaders...

Kryzyl-Ahn: So am I... I will hope that they will fight against this tyranny spread in the world...

Ural District, Russia 1301 hours

As the battle around the world ensued, one person was flying not far from the Western Uchiha base.

He had a not-too-short body with short light purple-colored hair and golden eyes similar to other Sirens. He was wearing a black shirt, pants and shoes of the same color. On his back was a large rigging with eight mechanical hands--four on each of two rows with the hands on the second row were longer than the first. Each of them had a cannon on the end with each cannon had four hidden fingers/blades.

Called the "Devastator", he was a mysterious, yet dangerous Siren ever lived. As part of Siren Blights under the command of Emperor Nalah, he could destroy any places he stepped on, bringing death.

Under his cold, emotionless face, he had a deep hatred towards them because they killed Observer Alpha and Zero--both of which were his closest friends.

Then, he stretched his right arm forward and the arms of his rigging were rotating. The first row rotated clockwise, making a white ring. While the second row rotated counterclockwise, making a yellow ring.

After a short while...

Devastator: Lights out! *Evil Laughing*

The Uchihas were confused as most of their equipment was knocked out because of the white ring. The truth was that the white ring was similar, but more powerful than EMP.

Uchiha 1: H-Hey, what just happened?!

Uchiha 2: I don't know, something's terrible in here!

Uchiha Officer: Those abominations tearing our signals!

Uchiha 3: What the hell is that?!

Several seconds later, Devastator fired the yellow ring upon the city which exploded above their base and created a large black cloud and struck the ground with many yellow colored lightning. Unlike normal lightning, this lightning wasn't bound to electrically charged regions. But also has explosive charge of thunder, as they struck the ground, it caused an explosion of all sides and the AoE of this area can be cause damage to all properties below it.

Uchiha Officer: Watch out for the explosions!!!

Devastator was silent as he watched the Uchihas were devastated. Under his cold, emotionless face, he had a deep hatred towards them because they killed Alpha and Zero--both of which were two of his closest friends. Not knowing of Devastator that there are some Nerubians and Cthulhus were attacking at him and he was recognized that their kingdom was destroyed centuries ago.

Devastator: You pesky eldritch! *Kills the Nerubians and Cthulhus who attempted to kill him*

After killing each group of eldritch dissidents, Devastator kills every single Uchihas with a storm. He muttered to himself as he landed near the base and the storm calmed down.

Devastator: Not enough. I need to kill every single one of you. For what you've done...!

Western Uchiha Strike Team: Comrade Daishi, we have a very big situation here in Ural District base!

Daishi: Get away from the area! Go to the European base NOW!

Western Uchiha Strike team: Roger that, Comrade! Everyone, RETREAT!!!

After the Uchihas' retreat to the European area, the Devastator heard several sounds around him--the Sirens were here. One of them was Nalahan-Naz himself, also known as The Forgotten One

Nalahan-Naz: Devastator! *Smiles* You did this, didn't you?

Devastator: Yes sir... *Anger tone*

Nalahan-Naz: It's alright. I'll take it from there. *Pats him to the Shoulder*

Then, a lower-class Siren came up to Nalahan-Naz.

Siren: Your highness. We found some of the Uchihas, Cthulhus, and Nerubians (Eldritch warriors led by Kryzyl-Ahn) still alive there, including Daishi Uchiha.

Nalahan-Naz: You may go now.

Siren: Yes, Emperor.

Devastator: *Angered* I didn't kill all of them?

But Orochi Stops him.

Orochi: Stop right there, don't mind some to attack the retreating force. If they survived, that means they're powerful~ *Smiles* So~ Let us help you, Devastator-kun~.

Devastator: Thanks, my empress.

Devastator flew over the base and with his riggings rotating like last time. As he charged up his cannons, an energy ball appeared on each of the muzzles. Then, he fired randomly and damaged more of the base. Other Sirens including Orochi joined up and started their attack.

Meanwhile, Daishi Uchiha managed to gather up his remaining forces.

Daishi: My comrades! This day, this area is the graveyard of the Siren Blights when they pass over here in our base! As comrade Izuna did the same to Chelyabinsk! WE WILL NEVER LET THE PLAGUES HAPPEN HERE IN OUR BASE! DEATH TO THE SIREN BLIGHTS!

Western Force and some eldritch warriors: DEATH TO THE SIREN BLIGHTS!!!

Daishi: Even at the cost of our life, we will hold our ground against the Sirens!

Western Force and some eldritch warriors: URAAA!!!!

Daishi: DEATH TO THE SIREN BLIGHTS! WE WILL NEVER BOW DOWN TO THEIR EMPEROR! INSTEAD, WE WILL GIVE THEM A FIGHT THAT THEY WILL NEVER FORGET!!! ATTACK!!!

Western Force and Some Eldritch warriors: DEATH TO THE SIREN BLIGHTS! URAAAAA!!!

Nalahan-Naz: Crush them!

Sirens: *Yelling* LONG LIVE TO THE EMPEROR!!!!

Then, an intense battle occurred. The defenders tried their best to repel the aggressors, but it was no use. They got encircled and suffered heavy losses. Daishi Uchiha, as the leader of the Western Force, he was a tough target--many Sirens tried to kill him, but to no avail.

Daishi: You will NEVER defeat me!!!

Kills another Siren

Daishi: Dammit, there's too many of them! *Gets Exploded* GAKH!!!

Daishi stood up and looked upon his attacker who was flying near him, the Devastator.

Devastator: Daishi Uchiha... Meet your death! *Dark Resonance*

Daishi: You... You will never take MOSCOW, YOU SUB-TERREANEAN CEPHALOPOD. BUT INSTEAD OF MOSCOW, YOU WILL HAVE YOUR GRAVES!!!

Devastator: So be it!

Then, an intense battle occurred. Devastator had the advantage because every time Daishi attacked, a blue honeycomb dome covered Devastator. On the other hand, Devastator was still able to fire his cannons through the shield with smaller and weaker energy balls that had a high rate of fire. He also used his cannon hidden fingers and turned them like a propeller.

Then, Daishi lost his ground--he got pinned to a wall with Devastator's rigging arm and spitting out blood.

Daishi: *Spits Blood* You win this time, Ugh! But you'll never have my army!! *Coughs*

Knowing this would be his end, Daishi looked at his opponent one last time with his eyes that were full of determination.

Devastator: Any last words, Uchiha Daishi?!

Daishi: I have... *Coughs* D-death to the... Siren blights... *Smiles*

Devastator kills/captures Daishi without hesitation.

Daishi (If he is alive/Canon): YOU WILL NEVER HAVE THE PIECE OF ME!!!! *Coughs* YOU ARE ALL GOING TO DIE! *Coughs again* I SWEAR TO GOD, WE WILL KILL YOU!

The Western Force along with the eldritch warriors are retreating to the new kingdom using the improvised Siren portal with Cthulhu conduit device.

Meanwhile in Mariana Trench, Cthulhu Old Kingdom, Pacific Ocean

The ruined area of the Cthulhu is merely looked like a shabby rock form and ziggurat-style architecture with some broken down pillars of the structural pictures of their building style on the waters of Mariana Trench. That area was supposed to be a collaborated kingdom of the Sirens and they said that there were some of the kingdom's graveyard engraved there on those graven names of the known Sirens in those obelisks.

The Picture of the Obelisks looks like this:

These four obelisks are the engraved as the deceased Siren founding fathers including Saren-Arak, Har-Rekhan, Tar-Xerxis, and Thexior-Ra. The descriptions are written in Shath'Yar/R'lyehian and there are the broken rocks or dents of these obelisks have meaning of these obelisks in which it said that they were not allowed to see it or know about their true identities of them and their stories otherwise, the intruders or the one who reveals the true identities to the enemies will die by their hand. They also found banners on the ground and in the walls of the broken-down halls of the palace. They looked like this:

Izuna: Those are...

Kryzyl-Ahn: Yes... Those are the leaders along with their emblems written in our languages and in Siren languages.

Izuna: How could be The Forgotten One destroyed this majestic palace like this?

Kryzyl-Ahn: Because of this civil war of this empire, they hate this place and their rule because they want to be free from them...

Izuna: Does it means that their view on the Eldritch alliance as "hostile" to them?

Kryzyl-Ahn: Yes, they are the ones who have controlled the area of their own territory.

Izuna: What do you mean?

Then, someone ran towards them.

Uchiha: Comrade Izuna! Something is wrong about the Main Guards!

Both Izuna and Kryzyl-Ahn turned to see the Uchiha holding a telegram.

Izuna: What is it?

Kryzyl-Ahn: What is it, youngling?

Uchiha: We... *Pants* We just received a telegram regarding the Western Force. Saying that they were under heavily attack, then we were tried to contact them but we lost them! I think there are no more contacts from that area of approach.

Izuna: What? What do you mean?!

Uchiha: I'm afraid, sir. We lost them, we lost Russia... Whole Main Guards are collapsed by the very forces of hell...

Both Izuna and Kryzyl-Ahn were shocked to hear it.

Izuna: Oh Bozhe... I lost them...

Kryzyl-Ahn: Also, my forces that I gave them...

Izuna: Wait, what about Daishi?! Do you have a contact with him?!

Uchiha: Sir, I'm afraid...

Izuna: What happened to him?

Uchiha: W-we don't know, sir. Either he got killed or captured by the Siren Blights.

Izuna went silent and clenched his fists. There was nothing he could do.

Izuna: Dammit... Of all my forces...Massacred! *Cursed inside his heart* I hope he's still alive and made it through. But if he's dead, then his death will not be in vain.

Kryzyl-Ahn: Yes, my friend. I know how it feels to lose more men because of those Rebels who invaded your base and your motherland, too!

Izuna: Let's continue to search some clues, my friend. And Uchiha

Uchiha: Yes, comrade?

Izuna: You may return to your post, dismissed.

Uchiha: As you command, great leader. *Salutes*

Kingdom Library, Mariana Trench, Cthulhu Old Kingdom, Pacific Ocean

Izuna: Kryzyl, do you know about the rebels?

Kryzyl-Ahn: Nalahan's forces, you say? Yes, they allied themselves with other Sirens called Abyssal Cadres and the Corrupted Old God...

Izuna: Corrupted Old God?

Kryzyl-Ahn: Yes, a Siren/Cthulhu deity of which I don't know much of their origin of these monsters but at least you know everything you had about Sirens and their characteristics. I think some of the clue or other prints of codices, books, tomes, and other written works of our ancestors millennia ago can help to solve this problem.

Izuna: Can we visit the old kingdom and Saren-Arak's chamber?

Kryzyl-Ahn: Yes... Because that chamber contains the eight wisdom cubes aligned within the altar to rebuild it. The altar of the Siren/Cthulhu alliance contains the decay/restore power of the Siren within this chamber... Therefore, it needs the 8 guardians of the cube to activate it.

Izuna: If that is required, can we, the guardians of the wisdom cube, restore the kingdom of your ancestors and your Siren masters?

Kryzyl-Ahn: Yes, because the prophecy says that the 8 cubes are aligned in their hands, it can restore the life of the kingdom. And it means, you eight are needed to restore this kingdom and you're one of them, including your comrades of their respective countries...

Cthulhu Palace, Mariana Trench, Cthulhu Old Kingdom, Pacific Ocean

The chamber of Saren-Arak lies beyond the secret room of the First Emperor of the first Siren Empire. The altar of the wisdom cubes for restoration of the kingdom is looking like this one:

Kryzyl-Ahn: Put the pieces of 8 Wisdom Cubes in this altar... Put the main one on the center.

Izuna: Okay. *Puts the main wisdom cube on the center and calls the other 6 followers to gather around with the altar*

Consequently, the 6 Uchihas were gathered and put their main wisdom cubes to the altar, but suddenly Izuna asked that there is a missing one of the cubes...

Izuna: Where is the last one of them?

Ryusei: You called, comrade Izuna?

Izuna: Ryusei, you're on time! How did you past these Siren grounds and the dissidents of them?

Ryusei: Long story short, comrade Izuna. I just pass by with them. *Shows the cube and a Nerubian core coin * And I have a gift for you, o great Saren-Arak. *Throws the Nerubian core coin and successfully puts in the core coin slot*

Izuna: Oh, I forgot the coin...

Kryzyl-Ahn: Ahem~! *Shows his coin*

Izuna: Oh, there it is *Picks his coin from him*. Thank you, my friend for remembering this... *Puts the coins*

Uchihas: *Followed suit*

Once the wisdom cubes were inserted to the altar, it moves counter-clockwise to restore the kingdom. The holographic Image of Saren-Arak appears with them.

Saren-Arak: My guardians, I am Saren-Arak of the Siren Empire. You know, Nalahan-Naz was born out of the female Nerubian noble member and male Cthulhu/N'raqian commoner because he's a bastard child out of wedlock. He wants to take the throne for himself and killed me. Even you're not here, he destroyed the Cthulhu kingdom including the King Zilgruruc the keeper. Ultimately, this kingdom is now in ruins... Only the bravest among them will be restore the glory of the Siren Empire. There were commanders who tried to fix this kingdom and the empire but they were failed to do so. Only you, Uchiha clan, made this far to get this restored...

Izuna: How can we defeat the Siren Blights?

Saren-Arak: You'll find Nalahan's weaknesses...

Izuna: What is it?

Saren-Arak: You'll figure it out sooner. I have a question for you, do the Sirens invaded your bases?

Izuna: Yes, your majesty

Saren-Arak: Well, I saw Nalahan's forces invading your followers' bases and now yours are being attacked by the Devastator. And breaking it into billion pieces!

Back at the former Uchiha Main Guards Western Russia base, the Sirens were celebrating their victory. As they were celebrating, all but one present. It was Devastator.

He sat on the roof of a building while looking at the night sky. He was still sad for all these years, hoping both Alpha and Zero were still with him.

Then, he heard footsteps. He turned and saw a white-haired woman with purple eyes. It was Arbiter.

Arbiter: Hey, Devastator.

Devastator: Miss Arbiter.

Arbiter: What are you doing here?

Devastator: Nothing. Just looking at the night sky.

Arbiter: Well, you should come and join us--Emperor's orders.

Devastator: Alright...

Return to the conversation between the two

Izuna: Him?

Saren-Arak: Yes, young warrior. He sought revenge on killing the Observers Alpha and Zero.

Izuna remembers about the fight against the Siren Blights in Chelyabinsk that day.

2 years earlier prior to the wormhole expedition

Izuna: Hah...Hah...Hah. YOU'RE FINISHED!!! *Whacks his AKM Buttstock*

Another flashback

Izuna: So be it! *Fires his Siren slaying AKM to her* Hah! It worked! Katerina, it worked!

End of flashbacks

In the end of flashbacks, Izuna remembers this fight that he did in the past and he gasped.

Kryzyl-Ahn: Are you okay?

Izuna: Yeah... I remembered it...

Kryzyl-Ahn: I think he wants to plague this world once again.

Izuna: That can't be happening! We'll kill those plagues!

Saren-Arak: Be careful what you wish for, young warrior! You'll hurt yourself! Why are you going to reciprocate that attack?!

Izuna: He attacked my base twice! He almost killed me in an Eldritch dream! Without your forces, I should be killed by him and his forces!

Saren-Arak: Time's running short... Remember what I taught you... *Fades*

Izuna: I will... Emperor Saren.

Kryzyl-Ahn: What do we do now, Izuna?

Izuna: I'll get the bottom of this, Kryzyl-Ahn! *Both of them leave to the New Kingdom*

Mariana Trench, Cthulhu Middle Kingdom, Pacific Ocean

There in the new kingdom of the Cthulhu, the base of the Alliance and its members were discussing about the plan of Izuna going alone about the solo espionage later on. But suddenly, Izuna and his friend, Kryzyl-Ahn encountered some beetle-looking Nerubians coming their way to Nya'lotha base camp. They curiously saw the two Nerubians coming near to them.

???: *Crawls faster*

Izuna: Who's there?

Anub'Reshub: I am Anub'Reshub, the heavy class Nerubian beetles you called are the class of Spider Lords and Crypt Lords. My consort is Shiori, leader of the Nerubian medical corps. Beautiful, isn't she?

Izuna: Kryzyl-Ahn told me about Spider Lords and Crypt Lords have Nerubian human consorts...

Anub'Reshub: Kryzyl-Ahn? I thought he's dead!

Kryzyl-Ahn: But I am now, Reshub.

Anub'Reshub: I see...

Nerubian Medic Leader Shiori: Ara-Ara, we have a visitor right here, my love.

Anub'Reshub: Uhh, this is Kryzyl-Ahn and his friend, uh...

Izuna: Izuna, Izuna Uchiha.

Anub'Reshub: Oh, Izuna of the Main Guards.

Nerubian Medic Leader Shiori: Izuna, huh... Does he have a wife?

Izuna: Uh, yeah... Lyudmila's her name and she is currently pregnant with my Heir.

Nerubian Medic Leader Shiori: Oh... I'm entitled as "Nurse Princess in the Nerubian Tribe" for our kind. And I have egg with Anub'Reshub.

Izuna: You're pregnant too?

Nerubian Medic Leader Shiori: Technically yes, *blushed* I am his mate.

Anub'Reshub: You study insects' biology?

Izuna: Yes... Life cycle, breeding, and so on to the sciences of reproduction... You do that in your breeding pods?

Anub'Reshub: Yes, that's how we do it.

Izuna: Oh, let me go back to the New Kingdom... I have to discuss this plan.

Nerubian Couple: Okay, we'll catch up with you.

The couple are going to the Inner kingdom to be prepared for anything that will be attack for the Siren Blights inside this area and they are the last line of defenses and preventing them from forming a wasteland of the area like they did in the old kingdom where there are too many died because of the Siren Blights.

In the New Kingdom, there are members of the Uchiha Clan are arguing about the plans for the Attacking/Spying the Sirens on the surface and they argue about their safety and the plan will obviously won't work or even they don't have a guts or courage to do so. But Izuna comes in with a very brilliant suggestion to go there in the base alone to spy there in Chelyabinsk.

Izuna: I'll go alone to spy the area.

Uchihas: What?! Are you crazy?! That's suicide.

Izuna: Where are your trust and faith?

Uchiha: We believe in you, comrade Izuna. But we never have the BALLS(Courage)to spy there!

Izuna: I'll go! This is the only one way to find out! Raihou!

Raihou(Taihou): Yes, my commander?

Izuna: Can you do the honors?

Raihou: Okay, my commander~ *Whistles the Sukhoi Su-57 jet fighter* Interceptor's ready to go, my commander~! But, are you sure you want to go there, my commander~?

Izuna: Yes. I am sure even my life's cost of it, Raihou. Wish me luck. *Salutes to the heart and goes to the Interceptor jet fighter*

Raihou: Good luck out there, my commander~.

Izuna goes alone with the espionage mission which he has to rescue Daishi and he had to spy every hideout of the Sirens and their bases for the any activities of the Sirens Including the rebellious Nalahan-Naz and his wife Orochi which they're now making out in front of the hero Izuna which he's now spying on them. Will he make it out of here, or will he die here in the surface?

Epilogue

Chelyabinsk Blighted base, Chelyabinsk, Russia

Izuna lands to the ghost town part of Chelyabinsk where a wedding party was being held. Contrary to its name, the "ghost town", the place had been transformed into a beautiful place for weddings. Upon without knowing of them, Izuna puts one of the cameras to the window side of the ruined base.

Izuna: I had to see what is happening here... *Puts one camera to the so-called "New Palace" and runs to the highest place* What in the...?!

Wedding Reception Ground, Blighted Base of Chelyabinsk, Russia

Devastator didn't know who would get married, so he asked Arbiter on who's going to be married.

Devastator: Uh, who's getting married, Miss Arbiter?

Arbiter: Emperor Nalah and Empress Orochi

Devastator: I see...

Not long after, the wedding party started. The Sirens, both the high officers and lower-class congratulate the wedding between Emperor Nalah and Empress Orochi.

Lower rank Sirens: Congratulations, Emperor.

Nalahan-Naz: Thank you.

Siren High Officers: Congratulations, Emperor.

Nalahan-Naz: Thank you, everyone... For the wedding that Izuna's Azur Lane forces are collapsed by our might. Long Live to the Sirens!! *Sending the toast*

Sirens: Long Live to the Sirens!

Izuna: So, it begins... The death of humanity and to the lucid eldritch nightmare will begin here...

https://youtu.be/r1MZM-Ujimg