The fleet shortly arrived to the mirror seas, a parallel world made by the Sirens during the early years of the Siren-Human war. The girls, and the Admiral saw countless wrecked ships from the past to the new ones that were sent here by the Sirens, the mirror seas are some way of a trap for the human sailors who haven't invented the technology to access the mirror seas.
High ranking Sirens had devices that can access these seas whenever they want, and bring sailors along with them before finishing them off. The reason how the fleet managed to get access to these seas is because of many years ago, around 15 years. A human warship managed to capture a high ranking Siren after a long fight which had many human casualties.
They reverse engineered the device, and placed it on many human warships before shipgirls arrived, so they could fight the Sirens in their turf. When shipgirls arrived at the scene, each of their ships had these devices that can access the mirror seas.
"[Okay, what the fuck was that!?]" Yamato thought.
"{Welcome to the mirror seas, ladie–Enterprise! If you continue stripping your clothes. I will throw you off this sh–}" Justin gets cut off then everyone could hear Enterprise loudly moaning. "{Bloody hell, this bitch is too horny… Anyway, the Sirens should attack right about… Now!}"
On cue, a purple colored laser hits Prinz Eugen's ship, but lucky she had her shield skill activated so the laser harmlessly absorbs it. The girls immediately turned the guns of each of their ships to where the laser came from, Yamato watched her guns slowly turn to the left where the Siren fleet was sailing towards them.
All of the girls except the carriers, fired their guns together creating a wave around their guns due to the vibration, and sound. Shells flew in the air for a few moments until they plunged down on the Siren ships or the water making tall pillars of water. The girls used armor piercing shells penetrated the Siren ship's armor, and exploding the ship while the girls used High Explosive shells caused fires on the decks of the Siren ships.
Yamato watches as Siren ships explode in different ways like splitting into two, bows flooded with water due to the explosion, and many more. The barrels of Yamato's guns lowered themselves as more shells got loaded in as they rose up slightly before firing again. Yamato's guns are the loudest compared to the other girls' smaller caliber guns. Sounding like thunder striking down from the skies.
"[So, that's how powerful Yamato can be?]" Justin thought, looking at Yamato's ship with a telescope. "[I caught a definitely good one.]"
Up in the grim dark purple skies of the mirror seas, squadrons of siren jets can be seen heading towards the fleet. The Admiral ordered the carriers to launch their aircrafts fast as possible, and told the remaining girls to have their Anti-Air armaments ready if the siren jets decided to target one of them, but for some reason. Siren jets aren't capable of breaking the sound barrier even though they have advanced railguns, and missiles on them.
Mitsubishi A6M Zeros were launched from the flight decks of Akagi, and Kaga. The aircrafts traveled as high, and fast as possible in the skies to get a higher advantage than the siren jets. The smaller caliber guns on the shipgirls began to fire upwards towards the squadron of siren jets. Some of them managed to get lucky, and took out the jets as the Zeros began their attacks.
Some Zeros that carried extra armaments like 500kg bombs or torpedoes started to attack the siren ships, and destroying them one by one. The Admiral was impressed with the fox carriers due to them focusing on the battle more than usual, it's probably because their Empress is with them, and wanted to impress her.
"Remind me that I will reward the 1st aircraft carrier division once we return to base. They are unusually more focused on the battle, especially Akagi. She normally tries to shout her love for me." Justin said to Enterprise standing beside him.
"Yes, sir." Enterprise replied. "[FUCKING BITCH!!! SHE DOESN'T DESERVE THE ADMIRAL'S PRAISE!!! I SHOULD BE GETTING PRAISED AT! NOT THAT FOX WHORE!!!!]"
"{All ships, you're allowed to use your riggings.}" Justin radioed.
"Engage!" The girls said together.
Their ships were engulfed by a blinding colored blue glow instantly, tiny cubes began to slowly dismantle the ships as they floated up then down forming each of the girls' own unique riggings. Yamato's riggings formed behind her as two of her main guns were in front including the 10 inch guns while the third one was behind her. Yamato floated on the water's surface like she's on ground, but more slippery, and on her right hand was a katana also forming too.
"{All ships, you have the permission to…}" Justin paused.
Yamato felt the atmosphere around her suddenly went fully cold, and lifeless. She looked at the other girls standing completely still like they were in some kind of shocked state like in horror movie characters seeing the monster or killer in front of them while they are only standing there. Dark shadows covered portions on their faces, only their mouths can be visible.
"{Destroy everything as fast as possible..!}" Justin said.
What Yamato sees next can be described as reckless because the shipgirls immediately rushed towards the siren ships as fast as possible while dodging multiple attacks from the sirens. They fired their guns at nearly point blank range making the armor of the siren ships' completely useless.
The girls had sadistic smiles on their faces, they are far different from their game version selves.
"[What is Yamato doing there standing, and watching, isn't she going to join them?]" Justin thought. "{Yamato, what are you doing there standing? Aren't you going to join them or this isn't something an Empress would do?}"
"{Are you accusing me of being lazy!? How dare you say that to a royal! Especially an Empress!!}" Yamato radioed. "{Fine! I will show you my power!}"
Yamato rushed towards a Siren ship, she was able to move on the surface of the water because it's like ice skating, and during Yamato's past life. Her parents used to bring her to the ice skating rink during the winter seasons, also she won a few ice skating contests before.
The siren ship fired it's railguns at Yamato, but she deflected the laser with her katana then aimed her 18 inch gun at the siren ship before firing. She used the turret as cover from the blast, Yamato suddenly heard a roaring jet engine behind her then she suddenly turned around, and jumped. She cuts a siren jet in mid air as it got split into two before crashing on the waters.
"This is entertainment." Justin said, watching the battle on Enterprise's flight deck.
"Here's the popcorn you requested, darling~" Enterprise said, giving the popcorn to Justin.