Ultraman: It turns out this is the easy mode.

The threat that Legend sensed and was about to intrude was the Sphere of Sphia—a highly intelligent cosmic life form that, out of fear of finite life, ultimately chose to merge with a planet. Their goal was clear: to hinder humanity's exploration of the universe and drag all civilizations into what they perceived as "eternity."

The abilities of the Spheres are incredibly troublesome: they can travel through space at speeds far exceeding those of conventional spacecraft, and can freely split into dozens of individuals, which can then quickly combine to gather power. Most troublesome is that they will form a triangular encirclement of three individuals to capture their targets before launching green destructive beams. Even more terrifying is that they can fuse with any living organism or matter to create Sphere chimeras with subspace shields—these chimeras not only have amazing defensive capabilities but also inherit the intelligence of the Spheres, making them extremely difficult to deal with.

The root of all these threats lies in their parent planet—the dark planet Gulansfia, also known as the "Dark Planet." It is not a planet in the traditional sense, but rather a product of a highly intelligent life form on another planet that forcibly merged itself with the entire planet in pursuit of "eternity." It is about the size of Earth, yet possesses the terrifying destructive power of a black hole, capable of completely destroying a planet in just three seconds.

The dark planet Gransphia's abilities are even more incredible: it can manipulate the immense gravity of black holes, sucking everything around it into them, even massive planets can be easily swallowed up; even more outrageous, it can absorb and neutralize all attacks—no matter what type of energy wave or physical impact, once it hits it, it will be instantly swallowed up, or even converted into its own energy.

The Sphias's idea is actually simple yet obsessive. They would extend an "invitation" to Earth's humans: "Humans of Earth, assimilate with us. We used to be just like you, all human beings."

Like humans, they once feared finite life and inter-group conflict, ultimately threatening their planet's survival. But "luckily," they found a "solution"—overcoming the individual form of humans and merging themselves with all organic and inorganic matter into the planet itself, becoming an "eternal aggregate."

"There's still time. Let me welcome you before Earth perishes. I am the future that Earth should move towards. Merging into darkness is the correct evolutionary direction for Earth. Merge into darkness and submit to me." This is their "surrender" to humanity, and also their last act of "goodwill" before destroying civilization.

However, neither the Sphere of Sphia nor the Dark Planet Gransphia knew that they had chosen the wrong target this time—Tremor was no ordinary guardian of Earth; he had brought a bunch of "big shots" from his own world: Getter Emperor, who could pursue ultimate evolution; Zero, the demon god with terrifying destructive power; Daissa, who once protected (destroyed) an ancient civilization; and the legendary Legend… Any one of these beings had the strength to confront a planet-level threat, let alone work together to deal with it.

Of course, some people might think that these big shots wouldn't directly get involved—after all, they are all beings capable of shaking up the universe, so why would they easily get involved in a crisis on a single planet?

No wonder!
If Cui Ming wanted to, he could bring them all to the front lines. But he didn't, not because he lacked the ability, but because he had more concerns than he imagined—if Getter Emperor and Mazinger Zero were to join the fray at the same time, the problem with Scria might be solved, but those two would definitely start arguing about "whose evolution/destruction is stronger," and then they would start fighting on the spot. If Earth were to be assimilated by Scria and instead destroyed by the aftermath of their battle, that would be the real trouble.

In contrast, Daissa is the simplest—simply activate the summoning program with the King of Heroes, and Daissa's true form will appear. At that point, not only will the Sphia chimera be no match for the Dark Planet Gransphia, but even they will know what despair truly means.

The most outrageous thing is the energy supply of the Great Sands—while others rely on geothermal energy or special minerals, it can use oxygen as its energy source! Whether it's Earth's atmosphere or the oxygen-rich environment of other planets, as long as there is oxygen, it can operate indefinitely without worrying about energy replenishment. This absurd setting makes the Great Sands the best choice for "protracted warfare," and it wouldn't be at a disadvantage even in a war of attrition against the dark planet Gransfia.

Cui Ming knew perfectly well that he would not let Getter Emperor and Demon God Zero take action at the same time unless absolutely necessary; but if Sphia really pushed him to the limit, he could just summon the Great Sands directly - after all, with a big shot who "can operate on oxygen", even if it was a protracted war, he could wear down the Dark Planet Gransphia until it had no temper left.

In short, if Sphia really dares to set its sights on Earth, it will truly meet a gruesome end – after all, in a sense, it has stepped on all the "landmines" that the big shots like Getter Robo, Mazinger Zero, Legend, and Daissatsu hate the most.

Let's start with its core "fusion" ability. For Getter Emperor and Mazinger Zero, this is a direct hit to their Achilles' heel—their core pursuit has always been "pure evolution," the process of an individual constantly growing stronger through battle and breakthroughs, a process of tearing limits through their own power. Kosphia, on the other hand, relies on forcibly fusing with other creatures, crudely mixing the genes and energies of different species, even humans. In Getter Emperor's eyes, this is a desecration of "evolution": "The fused monsters don't even have self-awareness; how can they evolve? Humans are forcibly fused, losing the possibility of autonomous growth; this is simply destroying the very foundation of evolution!"

Demon God Zero scoffed at this, his dark red armor even rippled with energy as he spoke of his rage: "Power built through plunder and fusion is nothing but a fragile bubble. It makes living beings lose their essence of 'becoming stronger through combat.' This kind of thing should be utterly crushed!"

Legend also loathed Scia's "infectious" fusion. As a guardian of the universe's balance, Legend valued "natural survival" above all else—every species has its own survival trajectory, and even the law of the jungle is part of the universe's laws. But Scia's fusion was more like a "virus spread," forcibly imposing its will on other life forms regardless of their wishes, disrupting the planet's original ecological balance, and potentially leading to the demise of an entire civilization. This behavior of "ignoring the laws and forcibly modifying" had long since crossed Legend's bottom line.

The hatred that Daissa harbors for Sphia is even more deeply rooted in a blood feud. Its ancient civilization encountered a "fusion-type creature" similar to Sphia—a creature that forcibly merges and devours civilizations. To combat this crisis, the ancient humans were forced to accelerate the creation of Daissa, hoping it would protect their civilization. However, due to interference from the fusion creature and an accident during its creation, Daissa went berserk, not only destroying the hateful fusion creature but also accidentally killing the ancient humans and the space fleet that came to their aid. This past experience became Daissa's deepest obsession, making it hate "fusion-type creatures" to the core.

If Sphia dares to come to Earth now, it will be tantamount to provoking all four of them at the same time. (End of Chapter)