There is no cheat from my past life.
I have nothing but the memories of being an Earthling who was reincarnated.
I have no mana, either—only a little bit of dexterity.
And now, someone like me has become a member of the Demon King’s army.
“Pleased to meet you, prospective slave trainer. I am your temporary aide.”
No.
It wasn’t that I had become one.
“Human. You have not yet officially become a slave trainer.”
Before me stood a red-haired female demon dressed in black-and-white butler’s clothes, much like a formal suit.
Small bat wings sprouted from her head.
Large demonic wings fluttered behind her back.
And a long, slender tail—the kind unique to demons.
Aside from those features, she was no different from a human. She looked like a beautiful woman cosplaying as a succubus or demon.
“Your current status is that of one of the human prisoners captured by our army. Our investigation has found that you possess neither the ability to pay compensation for your release nor any family.”
“.......”
“You may die, or you may work for our army. As a great honor, Her Highness the Vampire Princess has granted you the opportunity to challenge the position of ‘slave trainer.’”
The demon woman continued speaking in a courteous manner.
“I am the administrator assigned to you. If you are promoted to slave trainer, I will become your secretary.”
“And if I fail to become an official slave trainer...?”
“Then.”
The demon woman exposed her sharp fangs and gestured around us.
“What do you see in this room?”
“Luxury furnishings that cannot even be compared to a prison.”
I had been brought up to another room, one that was not a prison cell.
“What do you think this room is?”
“I assume it is the private room of a slave trainer...”
“Correct. If you become an official slave trainer, you will be the master of this room. But if you fail...”
She grinned.
“You’ll be dead. Understand, human?”
“.......”
Her vertically slit pupils gleamed sharply as the demonic secretary twisted the corners of her mouth with a vicious smile.
It was as if she intended to sink the fangs she had so deliberately displayed into my throat and tear it out.
“Ahem. This is merely a warning for when you fail. A human who becomes a slave trainer can be treated as a superior, but if you cannot even pass the minimum test... trash must be disposed of.”
“.......”
“So even if you do become a slave trainer, please forgive my rudeness just now. It is simply part of the procedure.”
There was a barb hidden in her words.
The implication was that she was being this polite to someone who was not yet an official slave trainer because she expected me to succeed.
In other words, if I failed, that courtesy would be reversed, and she would sink her teeth into my throat.
“Our legion commander, the true master of myself and of the Vampire Legion, Her Highness the ‘Vampire Princess,’ has great expectations for the prospective slave trainer.”
“She has expectations of me?”
“Yes. Otherwise, she would never entrust a human with work such as slave training.”
“.......”
I discreetly looked around the room.
The most distinctive feature was the bed, so large that even a hotel would have trouble accommodating one like it.
“The previous slave trainer was an orc.”
Had she guessed what I was thinking from where I was looking?
The succubus secretary pointed at the wide bed, whose ends could not be touched even if she stretched both arms out to their fullest.
“There have been countless slave trainers—goblins, orcs, trolls, gnolls, and even cyclopes. But we have never yet appointed a ‘human’ as a slave trainer. Do you know why?”
“Because they would have to deal with humans of their own kind.”
The targets I would have to train were human.
The ones I would have to torture, violate, and sometimes slash apart indiscriminately with a sword were human.
“Do you perhaps feel burdened by having to do such things to humans?”
Had I asked the wrong question?
The succubus secretary’s expression turned cold.
“Because you would have to rape human prisoners indiscriminately?”
“That doesn’t particularly burden me...”
“......?”
The succubus secretary tilted her head.
If anything, I was the one who wanted to ask a question.
“Raping humans and the like doesn’t seem like a major problem. Is there something about it that concerns you?”
“Are you not ashamed to become a subordinate of the Demon King’s army in order to survive?”
“......Why would I be bothered by something like that?”
Ah.
I understood.
“People lick the shoes of their fellow humans to survive, so why would I have any reason not to lick a demon’s foot?”
“......Hmm.”
Who cared who my employer was, so long as they kept me alive, fed me, and allowed me to live in such a decent environment?
Not to mention that my life was on the line.
If “raping human women of my own kind” were placed on one side of a scale and my life on the other, I was not some sweet, sentimental man who would leap off the scale while shouting, “I choose death for the sake of those women!”
“I see. If you truly have confidence, you will show me your answer in practice. Tonight, you will rape your first prisoner. Prepare yourself by then.”
“I have one question.”
“What is it this time? If you want information about the prisoner...”
“Why sex, of all things?”
“.......”
Even with the information I possessed as a mercenary, this was an especially unusual case.
“If you succeed in training them through sex, will humans begin risking their lives to fight for the Demon King’s army?”
“I believe you will naturally understand once you succeed, but...”
The succubus secretary opened her mouth as if she were doing me a favor.
“Only corruption through sex can reduce a human to a demon.”
“.......”
It was a secret of the dungeon, and a law of the world, that I had never known as a mercenary—or perhaps simply could not have encountered at my level as an ordinary porter.
“For a human who was not born a demon to degenerate into one, the only path is pure disqualification as a human through sex.”
* * *
Late afternoon.
A reception room inside the Vampire Legion.
[You made a human into a slave trainer? Are you out of your mind?]
Within the black robe, a fleshless skeleton clicked its jaw as it spoke.
[Impossible. No, they will fail. Just as countless others have.]
“You don’t know that.”
The white-haired, red-eyed woman—the Vampire Princess—shook her head at the black skeleton’s words.
“The likelihood of failure is high, but if he succeeds, the benefits will be impossible to summarize in a single sentence.”
[No human has succeeded so far. Many have tried. Myself included.]
The black skeleton shook its head vigorously.
[Humans are humans in the end. Blood is thicker than water. No matter how cruel a human may be, they will ultimately be unable to cross the line.]
“.......”
[There have been those who tortured and brutally killed their own kind while desperately struggling to survive as slaves of demons. Naturally, there were also those who trained them through rape. But in the end, all they accomplished was extracting information and the like. They never managed to bring about true corruption into demonhood.]
The black skeleton pointed at the center of its robe with a bony finger.
[Do you really think a human woman would say, “I’ll degenerate into a demon for the slave trainer’s cockkkkkkk!”?]
“Why? Are you worried that might actually happen?”
[You...!]
“Do not worry. I have no intention of antagonizing your legion.”
The Vampire Princess rested her chin on one hand and reclined in her chair.
“This concerns not only the strengthening of the Demon King’s forces, but also the revival of our clan.”
[It sounds as though I am about to hear something I should not.]
“So don’t go blabbing about it wherever you please.”
The Vampire Princess placed a slender index finger against her lips.
“I intend to break with the old men of the council and, unlike my younger sisters, create a new ‘bloodline’ as a member of the Vampire Clan within the Demon King’s army.”
[......!!]
The black skeleton flinched at the Vampire Princess’s words.
[You intend to betray your clan?]
“It is not betrayal. I intend to create a new vampire species separate from our clan.”
[And by doing so, you intend to vie for the position of the new Vampire Queen? Are you planning to abandon the Vampire Queen title sought by all seven princesses, including yourself, and throw the entire clan into the Demon King’s army?]
“No. I told you. I intend to create a new bloodline.”
The Vampire Princess tapped the table with a slightly irritated voice.
“The clan as it exists now is full of cowards. Aside from me, who personally entered the Demon King’s service as an officer, they are nothing but rotten lumps of blood who bite the necks of deer in the rear, pour the blood into glasses, and enjoy parties.”
[You intend to turn human women into vampires?]
“It won’t be easy, but I have to try.”
The Vampire Princess pulled back her lips, revealing her fangs.
“If I cannot create vampires of my own accord, I have no choice but to increase their numbers by force.”
[......Heh heh.]
The black skeleton let out a low laugh.
[You are doing something utterly unsuited to your title. The Maiden of Eternal Night is trying to preserve her own virginity while increasing her retainers and bloodline through sex.]
“But that is precisely why my virginity will shine all the brighter.”
[Indeed. Your virginity is the source of your power, after all. ...But are you not worried?]
“About what?”
[That human. I hear he is good at sex.]
The black skeleton swept one hand up and down.
[What if you submit to that human’s cock and are conquered—not merely losing the bloodline you intend to create, but being brought down yourself?]
“Hah!”
The Vampire Princess snorted.
“Me, conquered by a human’s cock? How ridiculous.”
[Does it sound like a joke?]
“It is not a joke, but a curse. Who am I? I am a pure-blooded True Ancestor among vampires, one who has inherited blood from the beginning of time, and a being whose strength has earned her a place among the four great officers of the Demon King’s army.”
The Vampire Princess flicked her white hair with one hand and snorted.
“There is no way I could be conquered by some filthy rapist who shoves his cock into woman after woman, or by some cock-slave who thrusts his cock into them merely to survive.”
[.......]
The black skeleton quietly shrugged.
[Well, let us go with that.]
“That is not what I mean by ‘let us go with that’...”
[More importantly, there is one thing I am most curious about.]
The black skeleton lowered its body and its voice along with it.
[Just how good is he at sex for you to hire a mere human as a slave trainer when he was supposed to be executed and fed to the vampire bats?]