Elf: I have a secret realm of emerald green.

No... Meltan said that Kaguya was in a dormant state before she was discovered, so maybe she has been in this world for a long time?

Based on the few words the Merutan gave, Xia Shen had no way of knowing. What was more important right now was how to rescue the Merutans trapped inside.

Xia Shen didn't know much about Tiehuo Huiye, but he knew that Tiehuo Huiye, codenamed [Jeter], could generate a huge energy reaction between the jets at the ends of her arms and the jets at the bottom of her body, propelling herself to fly.

Since a reaction is required, energy must be consumed. Like a rocket, Tessfire Kaguya needs to accumulate enough energy before each "ignition and takeoff".

However, rockets require energy from liquid hydrogen and liquid oxygen, while the Ironfire Kaguya requires a certain gas.

It is likely that Meltan was trapped in the container where Tetsuka Kaguya was due to the powerful suction generated when Tetsuka Kaguya absorbed the gas.

Then, the powerful elves also discovered this strange phenomenon and went to investigate.

After clarifying the general situation, I discussed it with Yan Yan.

Xia Shen finally decided to take the Ghost Tail Black Fish and the Meltan back to that place by himself.

Garchomp, Goodra, and Ursaring are not very strong underwater, so Xia Shen left them here to protect Yan Yan.

There are many powerful Pokémon below, including an uncontrollable Celesteela. If something really goes wrong, it won't be like outside where you can just ride Garchomp and fly away.

On the ground, Garchomp's sensors can detect the movements of other Pokémon at any time, ensuring its safety.

So, after changing into a diving suit and making other preparations, Xia Shen summoned the Dark Tail Fish and led the Merutans into the lake.

…………

The location of Chanchan Hill is right next to the sea, and a tributary of this lake naturally flows into the ocean.

The speed of the Dark Tail Fish is definitely much faster than the Meltans's slow, laborious movements.

Before long, the Dark Tail Black Fish, with Xia Shen on its back and more than a dozen Meltans clinging to its body, had already dived into the sea area that Meltan had mentioned earlier.

Fortunately, the waters near Akala Island are not deep and the pressure is not high, so with Xia Shen's current physical condition, carrying an oxygen tank is not a burden.

Even before seeing Tetsuka Kaguya, the underwater scenery made Xia Shen feel that the trip was worthwhile.

What Xia Shen saw was a large area of ​​architectural ruins, half-covered by seabed mud and soil, made of reinforced concrete, clearly a product of human civilization!

In other words, the food that Merutan mentioned earlier, enough to feed them for a long time, was not something like seabed iron ore, but rather this steel behemoth of human civilization.

Perhaps due to the erosion of time and seawater, the ruins of civilization in this secret realm are so old and dilapidated that there may be nothing of value left inside.

However, this discovery greatly surprised Xia Shen, because in all the previous secret realms, there had never been any signs of such large-scale human activity.

Yes, there is, but only some indirect evidence from archaeological discoveries in secret realms. Where else can you find a scene like this?

But... this isn't the deep sea area, and it's so close to Akala Island, it's impossible that it hasn't been discovered by explorers, right?

Xia Shen had this question in his mind, but when he discovered that several powerful air currents were drawing in the surrounding gas energy and sucking away the soil covering the wreckage not far away, he understood...

It was thanks to Tetsuka Kaguya that this remnant of civilization was able to see the light of day again.

Temporarily ignoring the wreckage that held the secrets of a civilization, Xia Shen instructed the Ghost-Tailed Black Fish to swim towards the vicinity of Ironfire Kaguya.

Since we can't escape this building anyway, rescuing Meltan is a higher priority.

As mentioned in the anime, when Kaguya Tekkaku ignites the gas and ascends into the air, it produces intense heat and an explosion, similar to the ignition of a rocket.

If that's the case, then Meltan, who is in the iron box with Tetsuka Kaguya, is in great danger.

They must be rescued before they have collected enough gas.

…………

Xia Shen didn't know what Tie Huo Hui Ye was absorbing. He had heard that the seabed was rich in oil and gas resources, perhaps natural gas or something like that?

In short, the gas inhaled by Kaguya Tekkani created a giant waterspout in the sea centered on her.

Although not as dangerous as the whirlpool, Xia Shen, riding on the Dark Tail Black Fish, could clearly feel a suction force pulling him inward.

However, both the Dark Tail Blackfish and Xia Shen are professional-level Pokémon... so they won't be easily sucked in.

After a brief period of adaptation, the Darktail Blackfish swam with the current and became even faster.

The further in you swim, the more aquatic creatures you encounter, just as Meltan mentioned before: Milotic, Gyarados, Arabian, and...

A large group of widowers scattered!

The densely packed swarms of wakame fish gathered here, making it look as if they had dyed the seawater a different color.

Xia Shen couldn't tell at a glance whether the seawater contained shad or the shad were mixed with seawater.

If someone with trypophobia saw this, they would probably be so terrified that they would faint.

Without sufficient strength, they cannot control their bodies within the waterspout and drift with the current.

But Xia Shen dared not underestimate these seemingly weak elves.

Once they unite and gather into a school of fish, they are known as "sea devils".

The combined power of all the Wishiwashi's water guns, forming a water cannon, is so great that even Pokémon a level higher than themselves must give way.

The ocean is vast, and there are countless sea creatures. The arrival of Xia Shen and Youwei Xuanyu did not attract the attention of the other creatures.

They were scattered around the large metal box at the center of the waterspout, swimming restlessly.

While an elf's intelligence is somewhat related to their strength, it does not mean that the stronger the elf, the more intelligent they are.

At least this is true for Spinosaurus and Wishiwashi, two Pokémon that seem to have relatively small brains.

Faced with this unknown and uncontrollable situation, the two dominant Pokémon behaved no differently than ordinary Pokémon, running around aimlessly like headless flies.

If it weren't for the fact that one can't speak while underwater, Xia Shen would have liked to just...

Wait a minute, although it can't speak, it can communicate telepathically, and this method of communication is completely one-way, so Xia Shen doesn't need to worry about them recognizing him.

Xia Shen's mind raced, and a bold idea popped into his head.

…………

A few seconds later, a strange voice suddenly appeared in the mind of the Overlord Spider.

[When the spirit inside the iron box awakens, the seawater will instantly boil, and everything around it will be vaporized by the intense heat generated by its ignition. You must break the box and stop it before it awakens!]

Strange, why is this strange sound popping into my head?

The first reaction of the Spider King was confusion, and then it thought of one possibility.

Could someone possessing such divine power be... a legendary guardian deity?

It felt a surge of excitement; according to the legends passed down from its elders, the island's guardian deity was a real entity.

But I had never seen it before. I never expected that I would have the privilege of hearing the voice of God today.

Is it because of this extremely dangerous unknown thing that the guardian deity appears?

That should be it. If, as the guardian deity said, this unknown spirit will cause great destruction in the near future, then the appearance of the island's guardian deity makes sense.

As it was pondering, it saw a strangely shaped fish spirit not far away, already preparing to unleash a water cannon.

Did it also hear God's teachings?

Although it didn't know who this strange-looking fish was or where it came from, it couldn't afford to be slower than other fish in this regard!

Without further hesitation, it rallied its minions and gathered water cannons to shoot at the large iron box.

On the other side, the wispfish also gathered together, transforming into a swarm of wispfish.

As if firing the first shot of a counterattack, after the first water cannon shot was fired, a continuous stream of water spewed from the mouths of the elves.

The target is a steel box containing the Ironfire Kaguya, which continuously absorbs the surrounding gas.

Although the impact of the water cannons would be greatly reduced due to being underwater, there are still Elite Four level and even Champion level Pokémon present.

The metal box already had a considerable gap, otherwise Meltan wouldn't have been able to squeeze in.

Under the relentless onslaught of the water cannons, and finally, as the waterspout reached its most turbulent point, the large iron box dented.

------

If we include Babydoll, the pre-evolution form of Jawedagon, there are a total of eleven Ultra Beasts that have appeared in the game.

These are all the Ultimate Beasts that Xia Shen knows.

Unlike the Gluttonous King's tyranny and Poison Baby's closeness to humans, Tetsuka Kaguya has a more peaceful personality.

But peace doesn't mean no danger. Even in children's anime, when Kaguya Tekka absorbs and explodes energy, it causes the surrounding trees to wither or even explode and burn. Not to mention the real world.

Although Kaguya Tekkano is in seawater, it can still produce a combustion reaction if the three elements of combustion—combustible material, oxidizer, and combustion source—are met.

Xia Shen didn't know how much energy the Ironfire Kaguya had gathered, or when it would ignite and take off.

Undoubtedly, this is a ticking time bomb that could explode at any moment.

So, after driving the Meltans off the Dark Tail Fish, the moment the box containing the Ironfire Kaguya was opened, Xia Shen sent the Dark Tail Fish rushing along the whirlpool to find the Meltans in danger.

If I'm really unlucky enough to have an explosion while I'm deep inside the iron box, then I'll have no choice but to swallow my pride and ask Yukishi to come out again.

Following the current, the Dark Tail Black Fish quickly rushed to the iron box.

Xia Shen didn't notice anything when he looked at it from a distance, but when he got closer, he realized that the iron box was really too big.

The gap was large enough that the two-meter-long Darktail Blackfish could easily squeeze through the slight dent created by the water cannons fired by the elves.

One can imagine the enormous size of the Ironfire Kaguya sleeping inside.

As soon as Xia Shen entered the iron box, he felt the surrounding seawater rapidly heating up.

Needless to say, this is a sign that Tetsuka Kaguya is about to ignite and take off.

But Xia Shen had at least bathed in lava before, so he could tolerate this temperature.

As an elf, the Darktail Fish has a stronger physique than Xia Shen, so there are no problems for it.

The man and the fish searched for traces of the Meltans inside the large, dark iron box.

…………

The iron box was completely dark, but fortunately, sight was not Xia Shen's only sensory means, and mental power played a crucial role in this situation.

With the spread of his superpowers, everything inside the huge iron box became clearly visible to Xia Shen in an instant.

The first thing they sensed was the enormous creature at the bottom, occupying nearly a third of the space in the entire iron box: Tetsuka Kaguya!

And... its body is continuously generating reactions of high temperature and intense energy fluctuations.

From Xia Shen's initial perception, this enormous energy reaction was nearly as powerful as the group of shadow orbs of the Crystal Lamp Spirit that had vanished forever.