Ruminas

The next person to become a Demon Lord was Ruminas-sama, the "Queen of Nightmares".
　She was the only daughter of the Vampiric Divine Ancestor, and she was extremely strong - but first I should explain the Divine Ancestor.
　Divine Ancestor - the person created by Veldanava-sama to be the progenitor of divine humanity.
　Veldanava-sama sought a wise being to speak to him. After the birth of angels and demons, this need was satisfied, but now he wanted diversity.
　That's why he tried to bring civilization to the surface world, and it seems that the Divine Ancestor was expected to play that role.
　Well, either way it didn't work out.
　He was nearly immortal and didn't need to leave any offspring. That's why they failed.
　I mean, we demons are the same, but the Divine Ancestor had no gender. So it seems that they had to wait over tens of thousands of years for more races to be born on earth.
　At least from what I heard.
　But, you know, the Divine Ancestor didn't give up.
　He kept on conducting these forbidden experiments to meet Veldanava-sama's expectations.
　That bastard certainly loved experimentation more than procreation.
　Whether that was good or bad, I can't say for sure, but I can assure you of this.
　He was an annoying asshole!
　I don't know how many times the human race was almost eradicated because of that idiot's experiments.
　But it's apparently also true that the High Humans were born because of that fool's experiment.
　It wasn't the eternal and divine humanity that they had wanted, but he contributed to the birth of the human race.
　It's hard to believe, isn't it?
　That's the correct answer.
　I didn't see it with my own eyes, so I don't believe it either.
　According to what I've heard, the Divine Ancestor created two races by analyzing his own body.
　Those were the High Humans and the vampires.
　It's different from the original way of birth that was expected. But since it came to fruition, I guess the result was okay?
　When Guy-sama was summoned to earth, humanity was already advanced. The High Humans had built a civilization more advanced than today's humans.
　But...
　Both of these races, it seems, had their strengths and weaknesses.
　The High Humans had inherited a strong magical power, but it was their spirit that was problematic.
　As you can see from the stupidity of summoning Guy-sama, they mistakenly thought they were the strongest.
It seems there is a saying in the other world that "Pride comes before a fall," and that's exactly how it turned out. It was not long before they died out.
　And as for the vampires, they had problems of their own.
　But on the other hand, maybe that was a good thing?
　Since they're still alive today.
　A strong body and powerful magic. A high level of immortality, and a matured mind. Although they had all of these things, there was one weakness: they couldn't operate under the sun.
　With this, they couldn't truly rule the surface in the true sense of the word.
　Then that damn Divine Ancestor kept experimenting.
　Well, I was there at the time, so I can roughly remember what he was doing.
　At that time, the spirits had already separated from the grand spirits of each attribute, and the four great elements were filling the earth.
　Those spirits took in magicules and materialized - in other words, they gained a body. The person who helped them to do so was probably the Divine Ancestor.
From the "Earth" attribute, the Earth Spiritmen (High Dwarf) were born.
From the "Water" attribute, the Water Spiritmen (Siren) were born.
From the "Fire" attribute, the Fire Spiritmen (Enki) were born.
From the "Wind" attribute, the Wind Spiritmen (High Elf) were born.
　Up to this point, it was still within the acceptable range, but then the Divine Ancestor went out of control.
　That idiot experimented with cross-breeding with the races that were born this way, creating even more races.
　To be honest, from an innocent lady like me, it was simply appalling.
　As a result, various races such as elves and dwarves, ogres and beastmen were born, but those were the success stories. There are many failed cases that were buried away forever, and there are even cases where they deteriorated to become monsters such as goblins.
　Guy-sama was worried that he couldn't leave this alone.
　But!
　As long as Veldanava-sama did nothing, he couldn't punish the Divine Ancestor.
　As a result of his experiments, the diversity of the world had indeed increased.
　I feel that the world has only become more complicated, but it is true that it has become more interesting.
　If I don't have to deal with it, that is.
　It didn't bother me at all so I was completely okay with this.
"I don't suppose you enjoy watching me be troubled like this, do you?"
"There is no way that could be true!　Guy-sama, this is just a misunderstanding. I am but your faithful maid."
　I follow up with a beautiful curtsey.
　That I was able to fool him so perfectly must be due to the fruits of my labor.
　Well anyways, that's how I got over that critical situation caused by the Divine Ancestor.
　However, it was because of his experiments that he ended up being destroyed.
"Oh, my 'daughter'!　You are truly my finest masterpiece."
"It is time for your judgment. Disintegration."
　I guess you could say he had it coming.
　The body double that he had created, the so-called daughter of the Divine Ancestor, had turned his body into ashes.
　Well, Divine Ancestor had gone too far.
　Don't tell anyone, but I was pretty happy with this turn of events.
　This is the secret episode of the fifth demon lord, Ruminas-sama, but make sure no one else knows about this, okay?