Chapter 2 The Succubus Trial Dungeon
Edited by: Kanaa-senpai
Roused by the distant, rhythmic echo of dripping water, I opened my eyes to the sight of a strange rock emitting a faint, spectral blue light.
The uneven, jagged texture of stone pressed against my back, forcing the realization that I had been sprawled out on the floor.
I sprang to my feet in an instant, drawing my baton in one fluid, practiced motion as I scanned the perimeter for threats.
A short distance away sat a small pond rimmed with precisely cut masonry; around its edge, a multitude of students clad in navy-blue blazers lay unconscious.
As I cast my gaze further into the gloom, I realized the sheer scale of the situation—the number of students was staggering.
The area appeared to be a vast cavernous space, roughly the dimensions of a school sports ground, entirely enclosed by monolithic rock walls.
I fished my smartphone from my pocket. No signal. This implied we were either buried in some remote mountain range or deep underground, far beyond the reach of any cellular network.
A mass abduction? No, snatching this many people simultaneously was a logistical impossibility. More importantly, what the hell was that phenomenon—the darkness so absolute I couldn’t even see my own hands?
Could a hostile neighbor have finally dropped a nuke? Did I just experience a blackout from a direct hit? If so, was this the afterlife?
While I stood there, brow furrowed as I tried to reconcile these sudden environmental shifts, the other students began to stir, rising one by one.
I observed their bewildered reactions as they took in the scene. Some were shrieking in a blind panic, while others—having reached the same grim conclusion as I—muttered about whether they had died. There were even those causing a stir, shouting about being ‘summoned to another world.’
Isekai summoning? Right, I remember coming across that in some manga after my return to Japan. Stories of being summoned as a Hero to topple a Demon King, or as a Dungeon Master; I recall finding them quite engaging. Come to think of it, an adult game I played recently utilized a similar premise.
However, there was no Magic Circle¹ beneath our feet, nor had we been bathed in light. Instead, the world had simply vanished into a void of total darkness. From a rational standpoint, believing we were dead felt far more plausible.
Perhaps a nuclear conflict really had erupted without warning? A strike on Kanagawa Prefecture, so close to the capital, seemed tragically likely.
I was just reflecting on how I should have squandered all my savings on a life of luxury if this was the end, when a feminine voice suddenly resonated within my mind.
”A little over three hundred. I suppose this will suffice.”
The voice was exquisite and intoxicating—the kind that caused one’s cheeks to flush and loins to tighten just by hearing it.
”What? Where is that coming from?” a student asked.
”Where are we!?” another shouted.
”Is this really an isekai summoning?!” a third cried out.
Reacting to the sudden auditory intrusion, the surrounding students responded with visible agitation and reddened faces.
Even I began to entertain a flicker of hope that this might truly be a summoning. If so, could I perhaps secure a cheat—maybe a ‘magical p**nis’ or a charm skill?
”Another world summoning? Heh, no. This is my dungeon, constructed exactly where your previous world once stood.”
Huh? A dungeon? Constructed? In Japan?
Wait a second. Does that mean we were caught in a dungeon manifestation? No—what did she just say? ‘A little over three hundred,’ and ‘this will suffice.’ That means she intended to trap us from the very beginning.
”What do you mean!? Return us to where we were!” a student yelled.
”What happened to the girls!” another demanded.
”Hey! Where are you hiding, you bastard! Show yourself!” a student screamed.
And so the students raved. In a crisis like this, the logical move is to remain silent and gather intelligence, but expecting that from average high schoolers is an exercise in futility.
However, as they had pointed out, there truly wasn’t a single female student to be seen.
As the uproar threatened to boil over into a full-scale riot, the woman spoke a single command in a voice dripping with boredom.
”Be silent, lower organisms.”
The moment she wove those words, the surrounding noise vanished instantly.
I looked around; everyone was clutching their throats with expressions of utter shock. I tried to force a sound to test the situation, but nothing came out. It seemed our ability to speak had been suppressed by some metaphysical force.
Once absolute silence was restored, the voice identified herself as the sovereign of the succubus race, the Succubus Queen³.
She then proceeded with a cold, systematic explanation.
The summary of her briefing was as follows:
- She acts under orders from the Demon God Zazard² to establish dungeons on Earth and harvest a vast quantity of souls.
- To this end, the leaders of all demonkin are preparing to manifest dungeons across the planet.
- The succubus race, preceding the other demons, constructed this Trial Dungeon⁴ to gauge the potential of this world and the humans inhabiting it.
- We are to serve as ‘testers’ for this trial, tasked with demonstrating the extent of human strength.
That was the reality of it.
Apparently, Earth is facing an invasion by demonkind. And we are the test subjects for a facility built specifically for that purpose.
I’m honestly just floored.
To think a scenario ripped straight from a fantasy manga would manifest in reality. And not as a Dungeon Master, but as a mere tester… I think I’ve seen stories with that angle too, but I would have much preferred the Master’s side. I would have designed the ultimate erotic dungeon.
Indifferent to our collective confusion, anxiety, and despair, the Succubus Queen continued.
”Your current location is the grand hall near the entrance of the first floor of my dungeon. Naturally, there is no exit. However, you may take comfort in this: I have designated this area as a safe zone, meaning no monsters shall manifest here. I shall provide a base for your continued existence.”
As the Succubus Queen spoke, wooden doors began to materialize one after another along the previously bare rock walls. Their number easily surpassed a hundred, deploying at precise intervals to semi-encircle us in the center of the plaza.
To the students standing paralyzed by the sudden manifestation of countless doors, the Succubus Queen began her description of the facilities.
According to her, the base is known as My Room⁵.
Beyond those doors lay chambers connected to a sub-dimension assigned to each of us; apparently, no one but the first individual to open a specific door could ever enter it.
Inside was the bare minimum required for subsistence, along with a Magic Crystal⁶ that facilitated the purchase of various necessities like weapons, armor, and rations.
We were expected to delve into the dungeon’s depths, slay monsters to harvest magic stones, and exchange those stones at the crystal for a local currency called DP (Dungeon Points)⁷ to buy food. As long as we did that, we wouldn’t starve.
Finally, she mentioned that because it would be a nuisance if we expired too quickly, she had applied a basic reinforcement Magic⁸ to the school uniforms we were currently wearing.
After concluding that part of the briefing, the Succubus Queen’s tone underwent a sharp transformation.
With a voice now laced with visible delight, she provided the answer to the question that had been gnawing at everyone.
”Oh, by the way. Since the women who were among you are useless as combat testers, they are being stored in a separate dimension as slaves. Though, I did dispose of those who were past their prime.”
Huh? The girls are slaves!? Literal slaves!? And she ‘disposed’ of the older ones? Does that mean the vice-principal and the school nurse are gone too?
While I was reeling from the term ‘dispose,’ she continued with even greater amusement.
”There are approximately 240 slaves in total. These women may be purchased using DP (Dungeon Points). Once bought, a woman is bound to absolute obedience toward her owner. I have marked them with a Crotch Tattoo⁹, so you may utilize them as sex slaves or however you see fit. Slay the monsters prepared by me, the Dungeon Master, and demonstrate the human race’s Ability¹⁰. Should you achieve power sufficient to earn my favor, I shall permit you to leave this place alive, along with any slaves you have acquired.”
With those final words, the Succubus Queen’s voice faded into silence.
I was more shell-shocked than I had ever been in my life. If I earn enough, I can buy the women from the academy and make them my personal sex slaves? Can a scenario straight out of an adult manga really be happening? Is this real life?
And if we prove our worth, we can actually leave the dungeon with them? Then what happens to the female students and teachers who aren’t purchased? Will they be ‘disposed’ of like the others?
This implies… I have to grind for this DP and buy the slaves to save them, doesn’t it?
Wait, does this mean I can construct a slave harem under the righteous pretext of escaping this place alive? That stunning girl from the swim club, the blonde exchange student with the incredible body who’s always running late with toast in her mouth, the visiting volleyball coach, and even the beautiful counselor—all of them as sex slaves?
No, hold on. It can’t be that easy. She said this was a dungeon, and she told us to kill monsters.
In other words, the stakes are our very lives.
Hmph. That’s fine by me.
I don’t know the strength of the monsters here, but I’ve lived in a kill-or-be-killed environment since I was old enough to hold a weapon. If they’re selecting ordinary high schoolers as their test subjects, it’s highly improbable they’d drop a dragon on us from the start.
In manga and games, you always begin by grinding against weak mobs.
I wouldn’t have minded a cheat skill, though.
Hm? Now that I think about it, I don’t see the Head Guard or any of my other colleagues. Looking around, the Principal, the Head of Years, and the senior faculty are missing too.
The PE teachers and coaches in their thirties are here. I’m fairly certain the Head Guard was in his late forties, so does that mean anyone forty and up was culled?
”I see, so even for the men, being old is a death sentence,” I said quietly.
There were some decent people among the guards and the older staff… but I guess they’ve already been ‘disposed’ of.
Essentially, she only wants to gauge the combat potential of the young. Well, it makes sense in a twisted way.
I offered a brief, silent prayer for the departed and returned the baton to its hip holster.
First, I need to investigate this ‘My Room’ setup.
With that objective in mind, ignoring the students and teachers who were still too traumatized to move, I approached the door closest to what looked like the dungeon entrance—a dark cavern maw—opened it, and stepped inside.
Now, let’s see what kind of room this is, what the Magic Crystal has in stock, and exactly how much I need to pay to save the sex sla—I mean, the female students. First, I verify.
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Summary:
Following a mysterious blackout, a guard and 300 male students awake in a vast underground ‘Trial Dungeon’ created by the Succubus Queen. They are informed they are test subjects for a demonic invasion of Earth and must kill monsters to survive. The academy’s females have been turned into slaves and are available for purchase using points earned in the dungeon. The protagonist, drawing on his combat experience, accepts the challenge with the goal of building a slave harem.
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Character Insight:
The Protagonist exhibits a chillingly efficient pragmatism; he mourns his dead colleagues for only a second before calculating the logistics of sexual conquest. His ‘Hard-boiled’ persona masks a deeply opportunistic nature that adapts to a fantasy apocalypse not with fear, but with strategic desire. He exemplifies the ‘darker’ side of Isekai protagonists—valuing survival and self-gratification over traditional heroism.
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Behind the Scene:
The author utilizes the ‘age cut-off’ mechanic (40+) to justify the removal of authority figures, isolating the young male demographic in a lawless environment. This transition from ‘modern survival’ to ‘gamified fantasy’ is a hallmark of the ‘Dungeon Realization’ subgenre. The ‘Crotch Tattoo’ is a direct nod to erotica tropes used to signify absolute magical and physical possession.
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T/L:
Notes:
• Succubus Queen – The sovereign of the Succubus race and servant to the Demon God Zazard. She possesses a voice described as蛊惑的 (alluring/bewitching) and maintains a stance of absolute superiority over humanity.
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Edited by Kanaa-senpai.
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