How did I know that the hero would inevitably fail?
Simple, I researched my enemy.
Before these creatures became known to the world as the next threat, there were hints of their presence.
Most of the warriors who fought the false demons thought these creatures were part of their lineup, but they were wrong.
I, who was inevitably forced to take part in this war as a general, found them to be quite interesting creatures, and so I captured a few to study...
[ Investigation Report: Unknown Creature.
After a series of disturbing events in sector KX-421, we were able to capture one of the mysterious unknown creatures that have been wreaking havoc near the human front. This swarm, identified as an insect-like ////, provides a unique opportunity to study this unknown species more closely and better understand its characteristics and motivations.
Research conclusion:
Biological nature: The capture of the insect-like creature confirms that this species is biological in nature and does not possess advanced magical technology. Despite its exotic form, the creature appears to be composed entirely of organic matter.
Hierarchy and Leadership: Observation of the captured creature suggests that it operates under a hierarchical structure, led by a more powerful entity. Although more research is needed to identify the leader, Duchess Luna Lestia concluded that this insect-like creature is part of an organized swarm.
Communication and coordination: It is observed that the insect-like creature is able to communicate with other creatures through chemical signals and visual cues. This ability to communicate appears to be essential to the coordination and execution of precise and effective attacks against its targets.
Assimilation and reproduction: It has been confirmed that the creatures have the ability to infest and assimilate other species. Biological analysis has revealed that the captured insect-like creature has undergone genetic modifications to adapt to the human environment, suggesting that the creature seeks to expand its hive by assimilating new life forms.
Genetic adaptability: The insect-like creature has been found to exhibit surprising genetic adaptability. Its biological structure can rapidly evolve in response to environmental stimuli and threats, which explains its ability to cope with diverse scenarios without the need for advanced magic...]
This is the result of this research, or at least the research that will free the world, as the determinant of the hero's defeat was the following conclusion:
[ During the examination of the captured insect-like creature, a surprising and disturbing discovery has been made: this unidentified creature shows a surprising resistance to magic and the knight's aura.
Attempts to use spells and magical abilities on the creature have had little or no effect, suggesting that the creature has developed a natural defense against these forms of power.]
It should be emphasized that this conclusion was made using wizards and knights of the same level as the creature (2-star wizards and 2-star knights). The reason why it was done this way is obvious.
When I released the research to the entire world, the international community did not take it very seriously, arguing that these creatures were pests brought from the Demon Continent, and that it only took a few 3-Star Knights to destroy a swarm.
Even Ilora's representatives said that it was an interesting study, but still exaggerated.
Well, considering that there were no higher-ranked creatures at that time, one could understand the world's lack of preparedness. Even I began to question my fears after months without any contact with a higher being of this strange race.
It was only when my little birds (spies) informed me that in a country relatively close to the Eldoria Empire, the inhabitants of a city had "mysteriously" disappeared.
This caught my attention, and months later the presence of these creatures and their more powerful variants was officially known, as the country was completely razed to the ground, leaving 0 survivors.
I continued to experiment with all sorts of methods to find a viable way to eradicate them, but found nothing.
I tried all sorts of elemental magic, curses, ancient artifacts, taboo magic, and even temporarily released dark wizards who had contracts with evil gods and demons, just to see if it would work.
The result was discouraging; while these creatures were affected in some way, their ability to adapt to magic was very impressive.
Even when the dark wizard summoned a real demon, it was impressed by this creature and said that these things were an ancient plague and humans were not prepared for them.
Yes, a demon of who knows how much age said they were an ancient plague?
The demon was kind enough to share countermeasures against this plague; he even told us that we should try blood magic against it.
There are 2 types of blood magic: the one used exclusively by vampires, and the one that uses blood as fuel to cause a different reaction than mana.
Vampires were exterminated in a campaign with the hero, so the first option was discarded, leaving only the second.
I used blood of all kinds, humans, elves, dwarves, fairies, even dragons, but it didn't seem to be enough.
At that time, the Eldoria Empire officially started a campaign of subjugation, as this threat was close to their land.
The research was not going very well, so much so that even some researchers became desperate.
I, however, was very calm, even though I knew what the lack of results meant.
When we ran out of ideas, I suggested using the blood of divine offspring, and since I was one of them, I gave my blood to see what would happen.
The result was a strong reaction, but after a few more attempts, the creature began to adapt, resulting in failure.
I decided to end the investigation, but not before arriving with a sample of the mysterious blood, which I ordered to be used as a final test.
The result was successful; the creature could not adapt to the war products generated from this mystery blood sample.
The reaction of the manna was curious and quite interesting, as it possessed a sacred composition, but with the corrosive properties worthy of dark magic.
This strange reaction was christened Holy Corrosion and became the definitive solution to eliminating this creature. Unfortunately, the creature the blood sample came from was extinct, and the place where I obtained it was the Royal Treasury.
Or so I told them.
This sample was handled with great care, and while the Eldoria Empire was one step away from declaring all-out war against this menace, a group of experts in the creation of magical artifacts and dwarven blacksmiths forged a weapon.
This weapon was a sword, and it could be used to kill these creatures with ease, whether you were a knight or a mage; just use it as a means of channeling and you could unleash the holy corrosion reaction.
Unfortunately, only one sword could be produced, which was of course not enough, and everyone knew it. However, the pride of everyone involved in the project was evident.
As the promoter of the project, I had custody of this sword, and no one argued about it either, but some probably thought that this sword would suit the hero well.
Weeks later, the Empire declared an all-out war and ordered the deployment of knights and mages of high level and above.
--
The fall of the hero and his companions brought despair to the world, and as if it was a bad joke, 80% of those called "golden generation", who were incredibly talented, were part of the star line-up of the Eldoria Empire.
Thousands of talents were thus lost...
After these creatures finished assimilating the remains of Eldoria, they continued with the surrounding countries: small kingdoms, the elven realm, the dwarves, even Ilora, which had a hero-level superpower, fell.
"Mother, the territories of Marquis Evergreen were invaded", my daughter said very respectfully.
(1 year was enough for them to devastate the continent).
I reflected on that as I sat on the queen's throne, watching my daughter.
She became a beautiful and brave woman, whose talent was worthy of being my daughter. After the hero fell, she reflected and apologized to me saying that I was absolutely right.
Her growth made me very proud.
(It's a pity that you live the end of the world).
"Survivors?", I just asked that.
"... none," there was a lot of regret in her voice.
She felt guilt, this is because she convinced many of the golden generation who were born in this country to accompany the hero, because she thought the hero would succeed and as a fallback in case I was condemned by the international community.
When all those talents fell, she felt guilty about sending them to their death and started training seriously. It is a pity that she was only one person, and every time a territory was completely exterminated, she blamed herself believing that if she had not sent those talents to the empire, perhaps, many lives would be saved.
(You can't always save everyone).
"You stay in the capital from now on, moreover, order all the nobles to migrate to the capital," I said forcefully.
"..." She was silent and bit her lips in reluctance, but in the end....
"I understand mother," she exclaimed as she turned around to retreat and carry out my order.
"Wait" I said and pulled a beautiful sword from my ring, a sword with a blade that changed color between black and white.
"You will use this from now on," I said as I handed her the sword.
She said nothing, but her beautiful purple eyes shone like stars.
I could see that, as she received the sword, her depressing mood changed a little, implying that she liked my gift.
--
As I watched the Celestia kingdom's territories fall, I reflected.
(We didn't have time, anyway).
The blood of that mysterious creature was a lie, for the blood I used to create the sword "Excalibur", which my daughter named it, belonged to her.
Yes, my daughter's blood was very special and she was also the last hope of mankind, but this information never got out to the world and only I knew about it.
I knew that if this was revealed, my daughter would be used by the world, and knowing her, she would gladly sacrifice herself.
Still, it was curious, who knew that the blood my daughter inherited would be salvation? How would the hero feel about it? Though she has my blood too, I knew the holy corrosion didn't come from me.
It came from Kylo Stromcrest, my blood only amplified the effect.