A special submarine vessel prowled through the dark ocean depths.
It moved like a ghost, nearly undetectable by any major nation, as its technology was at least ten years ahead of this world.
This advanced submarine didn't belong to any country, but to an independent military organization outside national boundaries called [Mithril].
They weren't terrorists, but a mercenary force formed to combat international terrorist activities.
Who would know that the captain of such a warship was a young girl?
"Really, this is too much!"
The figure sitting in the captain's seat let out an angry voice.
Despite her anger, her voice was still so melodious and beautiful.
This silver-haired girl, so exquisite she looked artificially sculpted, stood up angrily and issued a series of commands to the other members in the command room.
As the captain of Mithril's Western Pacific Fleet and the assault landing submarine TDD-1, she was issuing orders for a mission to clean up a terrorist organization.
Normally, a girl who appeared to be around fifteen or sixteen years old couldn't become the captain of a warship, but this girl was special.
The girl's name was Teletha Testarossa, a Whispered.
The so-called Whispered seemed like ordinary people, but these individuals were born with black technology data in their brains.
At the age of six, the girl had solved Einstein's ten coupled nonlinear partial differential equations to find the closest numerical value, and designed the TDD-1 [Tuatha De Danaan], the current warship.
So, as the designer who best understood this warship, she was a fitting choice to be its captain.
Of course, this alone wouldn't be convincing, as there's a significant difference between being a designer and a commander.
However, the girl had earned the recognition of her subordinates with her wisdom and capability.
She was extremely calm and correct when commanding operations, therefore she was also honored as the princess or goddess of Mithril.
"Ahh~"
Teletha Testarossa let out a somewhat contented sound after tasting a sip of coffee.
In the next period, until the operation began, it was leisure time, so she decided to log into that [Super-Dimensional Channel] again.
Hmm? What's this, a livestream?
Clicking to see, the image instantly made Teletha watch seriously.
These mechanical spiders with such high mobility and flexibility were quite terrifying.
If placed in a city, entering a high-density population area, just imagining the scene made Teletha's skin crawl.
It felt like even wearing power armor, to duel with such mechanical spiders, one would need to be an extremely top-tier warrior to avoid death.
Teletha briefly assessed the mobility and flexibility of what she saw in the current frame, and feared that among the warriors on her warship, less than ten could go one-on-one with these.
So, Teletha also deeply observed the few people clearing the spider-type machines.
The one at the center of the view should be Miss A2, right? This combat ability, Teletha felt, wasn't something a human could produce.
The human body and skeleton simply couldn't withstand such combat performance.
Unless, it was some kind of artificially created being that had undergone inhuman special modifications.
Also, since Teletha was a Whispered, her dynamic vision was better than normal people; otherwise, if a normal person were watching this battle scene, they would experience a sense of afterimages, as their dynamic vision couldn't keep up.
Speaking of which, that figure fully encased in heavy metal armor, that must be a machine too.
It was hard to imagine that its flexibility and mobility were no less than Miss A2's.
Additionally, those firearms that seemed somewhat similar to ones made in irregular factories, with bullets that exploded upon impact.
Unfortunately, just by looking at the explosive damage in the frame, one couldn't determine its specific power.
After all, without personally going there, one couldn't know the specific strength of that giant machine's metal body.
Oh, and there was also a knife being wielded, cutting through the mechanical spiders with ease.
Was it that sharp?
Wait, this wasn't a normal knife; it also appeared to be a high-tech blade. Was it high-frequency cutting?
It didn't look like it.
Teletha also saw A2 and another silver-haired woman with blindfolded eyes also using knives to hack at the mechanical spiders. It was evident that their knives should be of the same technology, but definitely different from the knife technology of that humanoid tin can-like metal robot.
The humanoid tin can's knife appeared to be sharper.
Speaking of which, that gun's firing didn't seem to eject shells—shellless bullets?
Hmm? That humanoid metal tin can was being targeted, obviously posing a greater threat to the giant machine, so it was receiving more attacks from the mechanical spiders.
Ugh, suddenly strange bat-like mechanical monsters emerged, gripping the humanoid tin can and diving toward the ground.
It seemed very touch-and-go, but just before impact with the ground, the humanoid tin can successfully broke free. However, it was still somewhat affected by the downward momentum, making a rather rough contact with the ground, creating a significant crater.
So, Teletha calculated again, estimating the hardness of the ground on site, and the speed and angle of the impact.
Finally, she estimated that this humanoid metal tin can weighed approximately 800 kg.
Of course, this calculation was based on the premise that the environment of this world was the same as Earth's, so the geological assessment should also be roughly similar.
Hmm?
Aerial support, obviously support for Miss A2's side, a fighter jet was seen.
Judging by the mobility of this fighter, Teletha found that the most advanced fighters in her world couldn't compare.
However, what happened next made her eyes widen: that blindfolded woman jumped toward the fighter, which caught her.
Then, the fighter transformed into a humanoid mech.
The technological level was higher than she had imagined.
And after transforming into this form, its flexibility became even more powerful.
So, how would it fare in a duel with the AS from her side?
The so-called AS referred to the Armored mobile master-Slave system, abbreviated as ArmSlave or AS, the humanoid mechanical armaments of her world.
Hmm, the flexibility and mobility couldn't match those from the other world, especially since the other side could fly.
But if her side's AS was the new type under development, equipped with the λ-driver system, then it would be hard to say who would be stronger.
Returning to the livestream content, with the addition of this variable-type weapon and its interference, it became more convenient for the humanoid tin can to attack.
With many spiders no longer harassing this tin can, it used that knife to excavate this giant mechanical monster, already cutting open a large opening.
Just as it was about to drill inside, an anomaly suddenly occurred. That energy device on the back of the metal tin can, was it? Suddenly crackling, the humanoid tin can seemed to lose power, and its movements slowed down.
Taking advantage of this opportunity, the spiders attacked, dragging it out and dropping it toward the ground.
Before it hit the ground, multiple mechanical spiders swarmed over, covering its entire body, holding it tight, and then they began to glow.
This situation made Teletha's face slightly change color, wasn't this typical—
Boom—!
Self-destruction!