I instructed my dungeon subordinates on preparatory work for the festival.

Setting aside everything else, I performed what I thought 'this must absolutely be done!' following the dungeon's rank increase.

"Barraaacks!!"

I was finally expanding facilities after so long. Even if we rested a day for the festival, what I absolutely had to do was the barracks.

'Maximum 4 on the 1st floor.'

Then to increase barracks, I should've opened basement 1, and I sealed that entrance. A contradictory situation, but there was a breakthrough.

[Facility Upgrade: Increases the rank of (Barracks Lv.0).]

[Upgrade Result: Lv.0 -> Lv.1]

[Required Materials: Lumber 16/20, Iron 0/4]

[Upgrade Condition: None]

[Expected Time: 4 hours]

[Barracks Lv.1: Space where subordinates can rest. Reinforcement work completed and storage racks created.]

[Effect: Maximum capacity +8]

'Upgrade all four simultaneously.'

First things first. I first compared the required personnel and capacity increase from upgrades.

"One Andras, two male hunters, five female hunters. Total eight."

"Then we need to increase three facilities?"

"Something like that. But..."

There's currently no lumber stockpiled inside the dungeon. Yet that 16 shown refers to the number of logs used to seal the dungeon.

"Ugh, it's annoying to work again..."

"Don't worry, Father."

Arthur smiled showing his fangs.

"Anticipating this, during daytime training with Mother Eila, we produced a lot of lumber."

"W-we practiced cutting long logs with swords as training and ended up..."

"Good job. So how many are there?"

"...About 30 remaining!"

Enough to increase by one. Even that one was appreciated, and I ordered Arthur and the ghouls to bring lumber.

And I gathered appropriate iron scraps from the looted supplies piled in one corner of the cave. The iron extracted from various items like gap-toothed iron swords, shovels, and miscellaneous farming tools was quite substantial. And Arthur and the ghouls performed the task quickly.

"Brought them!"

"Yeah, good work."

I stood right in front of the barracks and laid out the necessary materials. The location was where I'd brawled with Luna before. The place that clearly bore traces of combat began emitting purple mana with clanging sounds.

'Then I can't have a festival with the kids outside the cave.'

I'd planned to bring one or two. Since we were having a festival, I'd intended to let them enjoy happiness too.

"Ah."

I looked at Arthur catching his breath. Perhaps because he ran the sub-dungeon with his half-siblings, his level had risen very slightly.

"Arthur."

"Yes, Father."

"All the slaves outside are yours. Except Lily."

"...What do you mean?"

"You can have them. Keuheuheu."

When returning after burning the slash-and-burn village, these hunters had already tasted the inside once. They seemed to want Arthur too, so nothing bad for either side.

"But Father, I have my own preferences. Ahem."

"Won't take what's offered. Spoiled brat. Do what you want. I gave permission."

Though becoming hole-brothers-in-law with a guy I'd planted seeds in was uncomfortable in many ways, my thoughts changed with Arthur being the target.

'Don't know whose son he is, but damn handsome.'

I didn't know handsome orcs existed. Surely my genes mixed with Lily's genes and did great work.

"Then Arthur, take your siblings and sister to the barracks."

"All of them... you mean?"

"Yeah."

Meri, Line, Harpuia. All would spend tonight in the barracks.

"And go to the village and tell Lily to come to the cave."

"Mother... Ah! Understood."

Arthur left with his siblings smiling more brightly than ever. Meri complained and left lingering regrets, but since Line and Harpuia went together, she followed without protest.

'Can't show them this.'

After sending the children away, I returned to the cave and ordered subordinates to rest freely for the day.

"Harpies and stud hunters, today you may mingle with other slaves outside. Feel free to get friendly however you want."

"D-does getting friendly include that meaning?"

The stud hunters sent me meaningful looks, and I immediately nodded. Though harpies grimaced and gave hints, unfortunately they seemed oblivious.

"And one more thing."

I opened the prisoner cell lock. The Andras imprisoned inside slowly stood up.

"Take this one too."

"Sh-she's a prisoner though? She might escape."

"I won't run away-ras."

The Andras had already decided to become a subordinate. Therefore, I couldn't exclude her from the festival as a member of our dungeon.

If she evolved and shed her birdbrain, I planned to eat her as an evolution celebration, but doing it with her current appearance was problematic in many ways.

"Whoa, that figure though..."

"But she's a birdbrain?"

"The harpies have wings for arms anyway?"

"...."

Apparently the stud hunters' strike zone was far wider than mine. They were already discussing how to handle the Andras, which looked quite pleasant.

"You guys handle it yourselves. That... tell the guys outside to put her where she originally belonged and they'll know. But she'll become an important dungeon member, so I won't forgive injuries."

"Hehe, as if we'd refuse."

With this, the stud hunters went outside too. Though the Andras's rope was already untied, she endured the stud hunters' teasing and left the cave.

"Oh my, what a sight."

"Look at that beak. She definitely filed it."

"Master. What should we do?"

The harpies hesitantly approached me, and I pointed outside so those who left earlier couldn't hear.

"There are 3 up front and 2 more outside. Don't give them death by pussy? It's not easy to find guys that skilled."

"Okay..."

The harpies obediently nodded and withdrew. And I grabbed a harpy (★) about to leave.

"You're this way."

"Master? Oh my, fufu."

The harpy pretended to throw a tantrum while being pulled into my embrace. I took the harpy to bed and sent them out one by one.

"Ghouls stand by at basement 1 entrance with Hases. If the sealing barrier collapses, run to the cave immediately. Slimes rest on the ceiling."

Though called a festival, mixing non-intelligent monsters with intelligent beings was awkward in many ways.

Instead, I sprinkled slime dragon fluid that slimes loved so much and gave each a chunk as a snack, and promised ghouls I'd mobilize them on the next expedition too.

Thus, I completed preparations for the real festival.

"This combination..."

"Master, hoohoot."

Eila, Lune, Lime, harpy. And Lily who'd arrive soon.

"Anyway, this is the real festival."

I brushed off my hands once hard and removed my robe. The four exchanged glances and shrugged pretending not to notice.

"Didn't you say slime party?"

"I was thinking we'd solidify slime dragon fluid and eat modestly."

"We'll eat those too. We will. Did you forget?"

They all seemed to have forgotten from eating it so often. I took a big bite of slime dragon fluid taken from storage.

"This has aphrodisiac properties."

"...Hihit."

Everyone took big bites of the fluid.

***

At that moment when the night of pleasure began inside the dungeon cave.

Naturally, a festival began in Grimshek Village too with the dungeon owner's permission. Already having lost much resistance to interspecies acts, they began sharing acts with mutually agreeable beings.

Five male hunters.

Four female hunters.

Six harpy species.

With a gender ratio of 1:2, the men had to work their bodies hard. Of course, not all personnel were necessarily arranged 1:2.

"Kreoook, you're the best after all!"

"D-don't grab the wings! Aheung, don't be so rough! I heard everything yesterday when you pounded that Andras saying it felt good!"

"That was experimenting! You taste the best, hehe, lay my egg, eueoook!!"

One stud hunter laid a harpy on a wooden bench and pounded his hips in missionary position.

"Hmph, if you want me to lay eggs next time too, heueuk, try working hard..."

Though the harpy acted reluctant, at the man's earnest hip-shaking and words to 'lay eggs,' she inevitably started matching her hips as if she had no choice.

Thus, one man and one woman matched bellies.

"Heueoook! S-save me!"

"Got you, you bastard. Thought you died but you survived here fucking around? When I saw you last time, you looked suspicious so I couldn't say anything, you son of a bitch. Try fucking to death once, you burn victim."

"Oh my, what's their relationship? Ah, but I'll take the mouth. He's good with his tongue."

The hunter pair presumed to be lovers—or less—had the woman wringing the man in cowgirl position. The man couldn't do anything while restrained. A harpy sat on the man's face with her butt.

"Heuung, human. You rotate your hips pretty well?"

"Shut up, heueuk, you guys go fuck with that birdbrain... sorry."

"No, kheup, just a bit—!!"

One human and one harpy sat on one man and started tormenting him.

"Haah, I'm sick of always doing it with monsters. Right?"

"Seriously. Huu. Feels good doing it leisurely for once."

Two human pairs were leisurely moving hips in face-to-face sitting position. Having always had to do it intensely, doing it leisurely felt different in many ways.

"Whew, how many times did you cum?"

"At least six times a day."

"Must've been hard. You don't have to cum now."

"Not true? I will though?"

"...Perverted bastard, heueut."

One human pair with no pounding movements, just slightly shaking hips.

And the remaining people were Quick-shooter and Endurance Guy, with women being two hunters and four harpies, plus the Andras who came to watch.

"U-um..."

"What?"

Humans with humans, harpies with harpies. But they sat in a circle around a campfire chatting.

"Y-you guys aren't doing it?"

Quick-shooter nervously asked those sitting at the campfire. Though wearing pants, his front was already soaked.

"Mister cums too fast, don't like it!"

Harpy Angel, who'd suffered most from Quick-shooter, shouted first. The hunters who already knew Quick-shooter and Endurance Guy's notoriety from the village refused acts.

"Hey, how about that guy then?"

"Hey, you gonna do it with him? Don't. That one's trash-tier too."

"No, calling someone trash right in front of them. You guys benefited so much from me during the march..."

"Here, cumming quickly is better than lasting long."

Endurance Guy was abandoned.

"Th-then with me!"

"That doesn't mean we'll service you either."

Quick-shooter was rejected.

Eventually both men sent pleading looks to the harpies—

"...."

The harpies also avoided eye contact. Eventually their gazes turned to the last remaining birdbrain, Andras.

"...Look here."

"...W-want to do that thing?"

"This place is really strange-ras."

The Andras couldn't help being flustered at the gazes directed at her. Starting with the dungeon owner orc—though saying this is something—he was omnivorous, pounding any hole he saw, and the dungeon's subordinates, prisoners, and slaves were all influenced by the dungeon owner and became strange.

Bluntly speaking, they were crazy.

'I'm crazy too.'

"...Master ordered it, so I'll obey-ras."

The Andras stood up and walked swaying her hips left and right. Though her head was a bird, her figure had enough volume to overwhelm all women in the village.

"Master said my place is here-ras."

The Andras opened the breeding latrine door and entered. Then she voluntarily stuck her head in the unfilled hole.

"....."

Both men nodded at each other and followed. Though women's contempt denounced them, they didn't care and opened the door to enter.

"Haah..."

Six people simultaneously sighed. And their eyes only looked at the side of the breeding latrine, now dismantled with only an empty space remaining.

"Was really big..."

"And handsome..."

Should've been moderate. The hunters and harpies chewed slime dragon slime and soothed their heating bodies even with hands.

And the party resolving that gender imbalance was currently facing five people alone in the most imbalanced ratio.

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