Dungeon And Slave: The Lustful and Violent Slave Harem of the Guard and Students Chosen as Testers for the Succubus Dungeon

Chapter 8: Physical Enhancement

Tester Life Day 2, Test Dungeon First Floor, Great Plaza, Yagumo Sanada

Leaving My Room, I saw many students gathered around the plaza’s fountain.

Some in dress shirts or gym clothes were scooping water to wash their faces, brush their teeth, or rinse their mouths with cups.

Away from the fountain, groups of armed students sat in circles, eating sandwiches. I spotted some of the students I passed yesterday.

A few of those I passed on my way back were grinning, mimicking a thrusting motion with their hands. They probably used Wall Butt too. Reactions varied—some smug for using it, others frustrated for not knowing about it.

I could tell the eyes of nearby unarmed students lit up, likely overhearing the talk.

Wall Butt’s gonna be packed tonight. Is there a wait time? I wondered, heading to the dungeon entrance.

At the entrance, six teachers and external sports coaches, armed, were huddled and talking.

They were in suits or gym clothes. Are those enhanced too? I thought, when one teacher noticed me and glared.

Guess I’m pretty hated, I thought with a wry smile.

My lack of education, my appearance, reporting bullying, taking down thug groups they couldn’t handle, shutting down monster parents, catching stalkers. That earned me favor from the academy director, the chairman, and even young female teachers and temp coaches who were initially skeptical.

The reasons they hate me—crushing their pride and embarrassing them—are mostly petty jealousy.

Well, work hard and save the female students. I’ll help protect them. Protect, sure. You’ll probably mess with them after buying them anyway.

They’re fine for now, still composed. But in a life-or-death situation like this, how long can they keep playing teacher? I know, having lived in that kind of world for years.

I passed their glares with a cool expression and entered the dungeon.

A Horn Rabbit jumped out shortly after I started walking. I dodged with a half-turn, slashed its neck with my machete, collected the magic stone, and moved on.

“Something’s off…”

After about 30 minutes and a few fights, I muttered, looking down at my body.

I thought it was my imagination, but my body feels light. Not just that—my reflexes are sharper too.

I’m taking down Horn Rabbits even easier than yesterday.

Could it be… I leveled up? Did my mana increase?

With that thought, I tried activating Physical Enhancement.

“Whoa!”

I felt my mana drain, then a clear surge of strength filled my body.

“Did it work?”

I swung my machete.

It moved even faster than before.

I did side-to-side hops in place.

Zip, zip, zip—I was clearly moving quicker.

I tested jumping and running, and after about 10 minutes, I felt the strength suddenly fade.

“I see. Effect lasts about 10 minutes, boosting my strength by roughly 1.5 times.”

I swung the machete again.

Even without the effect, it felt lighter and faster than yesterday.

Alright, I get it.

Feeling light since morning suggests I leveled up—or rather, my mana increased—while sleeping.

That explains why I couldn’t activate Physical Enhancement yesterday.

As mana increases, base physical ability rises. Activating Physical Enhancement boosts it further. That’s how it works.

It’d be easier if I had a status screen with strength or agility stats. But then, what’s the baseline for those numbers? And how do you measure HP that hits zero when you die?

Monsters vanish when killed, making it game-like, but this is reality, not a game.

Since appraisal only shows mana, it’s probably the strength indicator. I’ll check again when I get back.

“For now, I could probably activate it two… no, three times in a row? Mana should recover over time, so I could use it again later.”

When I activated Physical Enhancement, I felt about a third of my mana drain—the mana I’d only vaguely sensed as “there” since learning the manual. Now I could gauge its total amount.

So, three consecutive uses would deplete it, making it unusable.

I don’t need it for these enemies, but stronger monsters might require it. If they come in waves, three uses might not cut it.

“Gotta kill lots of monsters to boost my mana.”

Concluding my experiment, I headed deeper into the dungeon.

“Damn, it’s huge!”

Reaching a dead-end branch, I slumped against the wall and griped.

This dungeon’s way too big!

I took a side path off yesterday’s main route, hit a dead end, backtracked, tried another side path that looped back to the main route, then took another side path to another dead end.

I’ve been at it for six hours, including a lunch break.

The students were only on the main route from the entrance, not looking for stairs. They seemed focused on fighting Horn Rabbits, probably prioritizing DP for survival.

As a result, I didn’t pass anyone in the side paths. I had to go deep to figure things out.

Not all bad, though. Side tunnels sometimes spawn two Horn Rabbits at once, making it a feeding frenzy, and I’ve found five treasure chests already.

The haul: one club, one Grade 5 potion, four large copper coins, 16 small copper coins, one leather pants, one leather shin guard. The club’s meh, but the leather pants and shin guard are nice, and the coins cover tonight’s Wall Butt.

First-mover advantage, right?

The side paths are narrower than the main route, and two Horn Rabbits at once make it tougher than yesterday.

Oh, that first side path, a few minutes from the entrance, had no Horn Rabbits or small tunnels. It dead-ended after a minute.

No treasure chest either. What’s the point of that path? A rest spot? But it’s too close to the entrance. Whatever for now.

I’m exhausted. My base stamina’s up with my physical ability, but the fights are more frequent than yesterday. Plus, aimless exploration is mentally draining. There’s gotta be stairs to the lower floor somewhere.

From yesterday, the main route had plenty of wide side tunnels. Do I have to check them all? Can’t someone else find the stairs first?

No, like the shower room, the first to reach the lower floor might get a special reward. Gotta push and find it.

It’s almost 4 PM. Considering my fatigue and the two-hour walk back, I should call it a day.

Also, I’m getting horny again despite being tired. Did my stamina and libido spike with my mana? Possible. Maybe that’s part of the Wall Butt service’s purpose.

I marked the dead end on my notepad map, dragged myself up, and started back.

Whipping my tired body, I returned to the plaza around 6 PM.

Armed students were everywhere, divvying up magic stones and items.

Way more people entered the dungeon than yesterday.

Still, between this morning, the ones I passed on the main route, and those divvying up now, it’s maybe 100 people total. Are the other 200 still watching and waiting? Or too hopeless to leave their rooms?

It’s a harsh situation for people raised in a peaceful country. Athletic or martial arts club students, confident in their stamina, moved fast.

But it’s tough for cultural club types. Telling someone who’s never fought to arm up and battle monsters is brutal. I was forced to do something similar at 11, though.

They might need more time to steel themselves. Once their DP for food runs out, they’ll fight whether they like it or not. Some only move when cornered.

I don’t care what happens to others, but if a struggling student asks, I’ll help once out of duty as an academy guard. It’d be a hassle if they got out alive and said I did nothing.

With those thoughts for the absent, I opened My Room’s door and entered.

Inside, I dropped my gear, propped my weapons against the wall, and showered to wash off the sweat.

I’ll wash my guard uniform pants soon. I can wear the leather pants I got today. I tried them during a break—they’re a bit short but don’t hinder movement.

I’d love to wash my jacket too, but I’ve got no spare. Maybe a leather jacket will pop up in a chest. I’ll wear it until it stinks. If no chest, I can buy one from the shop for 2,000 DP, but I’d rather get it free.

After showering, still half-hard from horniness, I thoroughly washed my junk, dried off with a bath towel, and grabbed my backpack, heading to the desk.

I want to call Wall Butt, but first, the tally.

Touching the magic crystal, I tapped [Magic Stone/Item Buyback] from the icons and chose [Magic Stone Buyback].

The screen instructed me to place the stones on the magic circle, so I dumped them all from my backpack.

Pressing the buyback button, the circle glowed, the stones vanished, and the screen showed: F-Rank Magic Stones: 215, 6,450 DP. Confirm? Yes/No.

“Whoa, I thought I got more than yesterday, but this is beyond expectations.”

I explored longer than yesterday, and Horn Rabbits often came two at a time. Plus, I barely walked the main route where other students were. It was definitely a feeding frenzy.

Satisfied with today’s haul, I tapped Yes to cash in.

Next, I cashed in the copper coins via [Item Buyback], same as yesterday, for 560 DP.

Checking my DP balance, it was 8,040 DP.

Yesterday’s balance was 1,030 DP, so today’s income is 7,000 DP. A daily wage of 70,000 yen! Solo pays off.

I could keep hunting Horn Rabbits to survive, but I’d never know when I could afford a Grade 1 Slave. Even earning like today, it’d take nearly a year.

Plus, the Succubus Queen’s words—“Prove Earth’s human strength, and if you gain enough power to impress me, I’ll let you leave alive”—stick with me.

That strength or power is probably mana. Killing monsters to boost mana and gain power is the way to earn her approval. Otherwise, we might not leave alive.

Will killing only Horn Rabbits raise my mana? There was that manga about a witch who killed slimes for 300 years and became the strongest, but I can’t kill for 300 years. I’d go insane before that, and I won’t live that long. That’s manga logic.

So, I need to kill stronger, higher-experience monsters to grow strong quickly and leave alive.

Slaves, Wall Butt—the Succubus Queen clearly wants us to fight actively as testers. If we fail her expectations, we might get disposed of like the overage head guard.

I don’t know how much power she expects, but I can’t stop. I have to keep moving forward to avoid disposal.

To survive, I’ll take on stronger monsters proactively.

Same as my child soldier days, just without gun-toting humans. That’s a plus.

I can’t think of anything to buy now, so I’ll save my DP.

Well, I’d love magic, but 30,000 DP per spell is out of reach.

Oh, right, I should get weapon maintenance tools. Are those even sold?

I opened [Weapons/Armor] in the shop and scrolled. At the bottom, a maintenance kit was listed for 500 DP.

Tapping purchase, three types of whetstones, oil, a wire brush for rust, and rags appeared.

The academy store didn’t sell these—maybe copied from the janitor’s storage or kitchen?

The whetstones range from coarse to finishing. My blades are still sharp. Since monsters vanish with their blood, no blood or fat dulls them. Game logic for the win.

The issue is if they chip later. I can sharpen minor chips, but anything worse, I can’t fix. If it affects combat, I’d need to rebuy for 5,000 DP.

For now, I oiled my main machete, unused dagger, and two throwing knives to prevent rust. I’m used to this.

Finally, I checked my mana. It’s definitely up, but by how much?

A bit excited, I tapped [Appraisal], then [Mana Measurement]. The screen said: Place your hand on the magic crystal.

Sanada Yagumo

Age: 25

Race: Human

Mana: F

“…I see.”

It was G yesterday, so I went up one rank overnight from the Horn Rabbits I killed on day one. In games, early levels rise faster, but 140 kills only got me this far?

I killed a lot today, so maybe I’ll hit E after sleeping tonight. That might increase Physical Enhancement’s consecutive uses. I’ll check again tomorrow morning.

“Now then.”

That’s everything before bed. The clock showed 7 PM.

I’m hungry and want dinner, but I’m too horny to care. I’ll eat after taking care of this and feeling refreshed.

Excited for tonight’s girl, I opened the shop, tapped [Slave Purchase], selected Wall Butt Succubus, and smoothly tapped the Chest-to-Lower Body Exposure Course.