Day 9.

The dungeon rank went up, and I spent a wild night with my subordinates. During that hot night, I realized what I'd actually done.

[Sowing]

[Sowing Target]

1).Harpy ★ (in 6 hours)

2).Lime ★★★☆ (in 12 hours)

3).Lily ★★ (in 1 day)

"...Oh man."

I got chills looking at the five women sleeping near me on the bed. Eila had really low odds, and thinking about how I came inside Lune's hymen, I'd basically knocked up all of them.

"Ah, whatever. Just keep pumping and dumping."

Let's just cream every chick I see. The capacity increased anyway, so let's hatch my kids and boost our forces. And then get revenge on Forneus.

'So what should I do right now?'

Upgrading facilities in the dungeon, exploring and conquering basement 1, defending endlessly against human attacks, and searching for new dungeons. And most importantly, the crucial activity.

"Gacha!"

After so long, I decided to do some gacha. Right on cue, the summoning circle at the summoning facility was sparkling with purple magic power, waiting for me to approach. I got up and lifted the item placed right next to the bed that had been creaking so much yesterday.

"Hehe, hehehehe."

Just thinking about doing gacha made me laugh. I feel best when doing high-grade gacha that pulls high-rank entities, and if it's a guaranteed gacha, I'm happier than ever.

[Andras's Egg]

I was pumped about summoning and hatching at the same time, and the egg I got from Andras's dungeon was a great item that would trigger all those daily quests and guaranteed 5-star gacha.

'I can eat another Andras.'

After evolving, I immediately devoured Andras. Those wings became Lune's wing dress, and her dungeon became part of our dungeon as a sub-dungeon and guaranteed 5-star egg.

"Alright then, gacha time!"

[Notice: The target egg can be hatched through monster synthesis.]

"Huh?"

Synthesis? It was the most fitting word for dungeon stuff, but I didn't know about the monster synthesis system yet.

"So what's this synthesis thing..."

"Are you up?"

Just then, Meri approached from beyond the cavity with a tired face. Looked like she hadn't slept much, and I felt bad because I had a pretty good idea why.

"...You heard everything, didn't you?"

"It's fine. I'm used to it. More importantly, what were you saying earlier?"

Meri started getting curious about the system too. I briefly explained the situation to her, and Meri crossed her arms and fell into thought. She seemed to be going through the magical knowledge she inherited from May.

"...It's a technique used by dark mages and necromancers. It requires a highly advanced magical system."

"Solomon set it up as a system for me."

"For humans, it's basically forbidden."

"But I'm a monster."

"Then should we do it right now? How does it work?"

Meri quickly changed her stance. Her curiosity about understanding the system's truth seemed more important than violating taboos.

"Hold on."

[Monster Synthesis: Synthesizes two or more monsters to create one entity.]

[Synthesis Target: (Andras) ★★★★★]

[Synthesis Condition: 2 or more avian-type magical beasts.]

"Fusion summon?"

"What?"

"Nothing."

If we're talking avian-type magical beasts, obviously there were Harpies and Andras. Plus there were way more than two. I immediately tried to attempt monster synthesis.

[Notice: Place the target to be set as the main personality in the center of the summoning circle.]

[Notice: Arrange monsters in the summoning circle so that ★ totals 5 or more.]

"So it's not Potara fusion? It's literally a ritual summon."

"Can you start saying things I can understand?"

"It's like when A and B fuse, instead of becoming AB, they become Ab."

"I get the gist of what you mean."

Meri started writing down and organizing the information I was giving her. Meanwhile, the subordinates sleeping in my bed woke up one by one, and I couldn't wait for Meri to finish organizing the monster summoning.

"Meri. Let's just try it."

"What? What if it fails or something goes wrong?"

"We'll deal with it when it happens. Don't we just go for it first?"

Lune chuckled at my words. Having experienced the thrilling stunt of hymen sniping because of my instinct to just cum first and think later, Lune directly realized just how reckless I wanted to be.

"No guts, no glory. Kehehehe."

"You can tell without eating it if you just observe..."

"Argh! I need to do monster synthesis!"

When I yelled out loud, Meri finally threw her hands up. Following my stubbornness, we decided to do monster summoning directly, and I stepped onto the summoning circle.

Wooong.

Purple magic power began surging and wrapping around the egg. The summoning circle started glowing with purple circles in four directions centered around the middle.

'Obviously the synthesis targets need to stand there.'

Number of ★ needed: five. Synthesis condition: 2 or more avian-type monsters.

"Hmm..."

In crude terms, it'd be grinding up subordinates, but weak monsters combining into one strong being isn't exactly a weird system. Unless you're paying attention to each individual monster.

"This is guaranteed 5-star Harpy material."

"Me?"

"Yeah, time for you to become 5-star."

"Me, 5-star? Really? You're lying."

"I'm saying you can become 5-star."

Harpy looked shocked with disbelief. I had Harpy stand in the center of the summoning circle.

[Notice: ★☆☆☆☆]

"...So now we need four more. Who should go in?"

"Uh, do we have to?"

"Yeah. I'd prefer to use kids from our dungeon if possible."

It was more efficient to synthesize existing 1-star Harpies than summoning Solomon's Harpies. But since I still had at least some human decency, I decided to take volunteers.

"Can you call the Harpies over? Bring Andras too."

The subordinates quickly brought all the Harpies and Andras. Meri summarized and explained what she understood to the subordinates.

"Okay, taking volunteers for synthesis."

"..."

Nobody readily stepped forward.

"It's a great opportunity to be born as 5-star."

"Um, Master. What happens to us then?"

"That's why we're trying it directly to find out."

"..."

It was a reckless opinion with zero persuasiveness. I felt bad and changed my tune.

"Then I guess I'll just summon from the Demon Castle to fill the stars."

"I, I will become one-ras."

Surprisingly, Andras volunteered. I asked her why she volunteered. And the reason was pretty understandable.

"You said I'm limited to Demi-human Andras-ras. If I can become 5-star even as 1/5, I'll gladly do it-ras. More than anything...if I get synthesized, I won't have to end my words with -ras anymore-ras."

"Good. You're in."

Andras stood in one corner of the summoning circle. Then she urgently raised her hand as if remembering something.

"W-wait, you're not planning to stop me from laying eggs-ras?"

"No. I'll make you lay a bunch every day."

"Then that's good-ras."

Andras closed her eyes. The synthesis condition became ★★★☆☆.

"So, any Harpies wanna do it? If not, I'll supply from the Demon Castle?"

"...Th-then we'll do it!"

Two second-generation Harpies (★) raised their hands. Their mother Harpies blocked them.

"Wait a sec. Will you really get synthesized?"

"Living by laying eggs is nice, but we also want to be reborn as stronger beings."

"...I'm sorry. I should've birthed you as stronger beings."

The Harpy mothers and daughters calmly hugged each other and said goodbye. Their desire for evolution was deeper than I expected. The moment the Harpies stood in each direction, a gorgeous rainbow light began flowing from the magic circle.

"Any last words?"

"Not really-ras."

"Um, I hope I lay lots of eggs!"

"If we're doing this, someone better at fighting and fucking. Specifically...Master. Hehe!"

"...Thank you all."

The Harpy standing in the center trembled and hugged the egg with her wings.

"I'll get lots of Master's seed and lay ten eggs a day!"

"...Lots of girls craving my seed."

How many times would I have to cum to make her lay ten a day? Lune and Eila's expressions became quite something. My mouth went dry, but my heart pounded with excitement about testing a new system.

"Anyway, ready to become 5-star Andras?!"

"Yes!"

"Let's go synthesis!"

Bang!

I slammed my fist down on the monster synthesis screen. The two Harpies and Andras scattered into rainbow light.

"Ah..."

The first-generation Harpies sighed. Before that sigh even ended, the summoning facility's light gathered toward the center. The Harpy standing in the center quietly bowed her head.

"I'll work hard for all three of their shares!"

Fwaaaash---!!

The rainbow was absorbed into the black egg, expanding its size. The egg swallowed the Harpy's body whole, and like when Eila reincarnated before, it became a giant cocoon.

[Monster Synthesis: Monster synthesis has begun.]

[Synthesis Result: (Andras), ★★★★★]

[Estimated Time: 7 days]

"Ugh, that takes forever."

A black cocoon settled in the summoning circle. The membrane pulsed like a heartbeat, and I raised my fist toward the Harpy inside the cocoon.

"Hang in there. For 7 days."

"Uh, dad?"

"What. What's wrong?"

"If it's like this here, won't we not be able to summon during that time?"

"..."

[Notice] During monster synthesis, [Magic Stone Summon], [Subordinate Summon], [Bond Summon], and [Hatching] are impossible!

"What...the hell...."

Gacha was blocked.

***

It was a depressing start to the day, but at least I learned about a new system called synthesis, so I wasn't too bummed out.

And surprisingly, many monsters wanted evolution through synthesis. Almost all the monsters wanted to evolve through synthesis, overcoming their birth limitations.

"Are they staking their lives on evolution?"

I understood wanting to get stronger, but going so far as to become one with others? It was hard for me to understand, but the monsters' perspective seemed different.

"If we can get stronger."

"Evolving to become a better entity is a good thing, right? It's not like we're mixing with other kids."

"If Master synthesizes us only with subordinates from our dungeon and not those from the Demon King's army, we have no regrets...is what Hases said!"

I seemed to lack monster sensitivity. If they wanted evolution this badly, it was only human nature to listen.

"But the problem is this thing."

The black cocoon sitting in the middle of the summoning facility. No matter how many times I pressed the system window, only the message "Impossible during synthesis" popped up, so there was no other way to check.

"Tsk, can't be helped. Just gotta live like this."

Then I had to focus on what needed to be done right now.

Plant seeds, harvest and store the fruit, renovate facilities and expand new ones.

Eat delicious things in the process. The specific system about evolution could be checked again when Harpy was reborn as Andras.

"Master, aren't you hungry?"

"Ahem, aren't you thirsty?"

"Just come straight to bed."

Eat, sleep, fuck.

What's more important than this for living?

I grabbed Eila's waist on the left and Lune's on the right and jumped onto the water bed Lime had already prepared.

"Time to get it on!"

I started the day with sex.

***

[Demon Castle]

"Huh?"

A succubus with light purple hair sensed something unusual. The light from one of the connected summoning circles faded, and a completely new-shaped summoning circle took its place.

"What's this...?"

A green circle. And inside it was a very simple tilted symbol. The succubus copied the emblem's symbol into her notepad.

1+.

"I've never seen a dungeon master like this..."

"Oh my, what's wrong?"

Click clack. The sound of heels echoed from afar. The succubus was startled and bowed at the waist.

"Hello!"

"Oh, sweetie. I don't like that. Stay comfortable."

The secretary in all black, Estu, waved her hand to reassure the succubus. But the succubus fidgeted and watched Estu's reaction.

"Um..."

"Call me Estu now, okay? Is there a problem?"

"Yes. Ms. Estu. There's an abnormality. You know, the emblem of the 63rd ranked dungeon Andras changed. Did the master change? We haven't received any notice from our team yet.... I'm wondering if there was a rebellion."

"Hm? Really? That's the one that doesn't accept our army dispatch...."

As soon as Estu saw the emblem, her face twisted. And at the same time, she licked her lips as if amused.

"...Hehe, so that's what happened."

"Um, if you don't mind, I'd like to know what's going on too."

"Ah, it's nothing. Seems the master changed. Just work as usual."

Estu examined the very small summoning circle she'd made in a corner of the cave. That summoning circle had disappeared and taken Andras's spot.

"Sweetie, if another emblem like this style appears, report it to me immediately, okay? It's an important matter the Demon King is managing."

"What? Ms. Estu, are you the Demon King's—"

"Sweetie. Play along."

"...Yes. If I report to Ms. Estu, it'll reach the Demon King too. Understood. I'll do that."

The succubus bowed deeply. Estu examined the 1+ emblem placed at position 63 for a while before turning her gaze to the succubus.

"If they call for dispatch summons from there, pay special attention."

"...That's impossible. When you gave me orders, Ms. Estu, you told me to assign randomly according to principles...."

"No. Do it randomly. Do it randomly, but."

Estu made a ring with her fingers and thrust her thumb in and out.

"The master there is a pig who likes to eat. Hehe."

"Ah, if that's what you mean. ...Understood."

"Alright, good work~"

Estu disappeared. And the succubus began recording in her notepad.

Gate 63.

Deploy as many monsters that can be used as ingredients as possible per Ma—

"Oops, what a mistake."

[Ms. Estu's special instructions.]

"Ahem."

The succubus put the notepad in the drawer and took a break.

Half a day passed,

And even after a full day passed.

Even after three days passed, there was no response from the summoning circle.

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