Prologue

This is a tale from before Keima and the others went to the Demon Realm.

Keima and Haku realized that Rokuko lacked any form of sexual education. That was largely because Haku had engineered it to be so, but the situation had changed drastically since then, and Rokuko’s relationship with Keima had developed so much it was inevitable that things were about to go to the next level.

It was a grave situation. However, at this point, it would actually be more dangerous for Rokuko to not have a proper education. Thus, Haku took responsibility for giving Rokuko sex ed.

“Errrm... Rokuko,” she began.

“Yes!”

“I believe that it is important for you to, ah... learn about how babies are made.”

“Yes!!!”

Rokuko’s powerful response sent Haku faltering fearfully. Her sweetheart was looking up at her with innocent eyes, and she was going to have to stain her with knowledge of the sticks and holes, of the meaty way in which children were made.

Haku paused. Perhaps there was some way she could solve this.

“First, let us talk about sexual reproduction.”

“Um, I think I remember that. It’s the lowest thing anyone can do to a woman, right? They only do it if they want to hurt her and make her feel worthless.”

“Y-Yes. Indeed. I did teach you that.”

In order to trick Rokuko, Haku had recovered scenes of humans violently raping each other in the capital, her dungeon, to emphasize her point. Incidentally, humans were fundamentally inferior creatures from Haku’s perspective, so said videos were not erotic to her at all. It was like recording footage of wild cats breeding.

Haku froze.

“Haku? Sister?”

“I-I will teach you how children are made.”

“Right!”

What to do, then? It would be simple to just say that sexual reproduction was in fact the way to make children, but that ran the risk of Rokuko immediately rushing over and engaging in the act with Keima. Even to Haku, it was clear just how fond she was of him. Well, that was precisely why it was dangerous not to give her a proper education, but... Wait. On second thought, Keima seemed to have a general understanding of all this already.

Okay. Haku made a decision on how to proceed.

“Keima knows the specifics of the deed himself, so I will tell you only the first steps.”

“The first steps?”

“Indeed. Dungeon Cores are built differently from not just humans, but all living creatures, so preparations are necessary for making children.”

Indeed. Her plan was to just not give details in the first place. It would be even better if Rokuko refused Keima if he ever tried to engage in sexual reproduction! This was the power of pushing work onto other people! It was a dirty strategy, as expected of Dungeon Core Number 89!

“Um, what preparations?” Rokuko asked.

“First, you need a body that matches your partner’s. Our Father is a god, after all. As his children, we Dungeon Cores have divine bodies ourselves. Some would call us demigods.”

Dungeon Cores never grew old and never needed food or rest. They wouldn’t die unless killed by external means, which made them more like gods than living beings.

“In short, if Keima earns a divine body like ours in some way, then you will be able to have children.”

“Ah...! I see! S-So that’s why Keima’s been gathering the Divine Bedding. Jeez...”

“Indeed, by collecting and using the Divine Bedding, one could become a demigod.”

Rokuko blushed crimson. She recalled that Core 112’s wife, Redra the Red Dragon, had been considered the goddess of protection for Tsia Mountain. It all made sense.

Haku recalled something, too—that gods grew in number in a different way than living beings did.

“Oh yes, this is something Keima likely doesn’t know, so I suppose I will tell you what happens next.”

“R-R-Right!” Rokuko squeaked, her voice cracking nervously. This was exactly what she had wanted to know.

“If you both cut off a portion of your power and mix it together, you will make a child.”

“Cut off...?”

“That is how Father made us, no? Of course, he is an incredible god and could make a child himself without needing to mix his power with anyone else’s.”

“I see...”

“However,” Haku said, a solemn expression coming over her face, “cutting off a portion of one’s power is a serious thing... It is safe to say it is literally risking one’s life. It’s possible to die in the process. Unless one has as much power as Father, it is not so easy to make children.”

“O-Oh...” Rokuko lowered her eyes sadly.

Incidentally, that was completely true when it came to making children as gods. If done poorly it was more dangerous than the births humans went through, so this was something even Haku had to explain in full with complete seriousness.

“More than two gods can also make a child together. There was a trio of goddesses that birthed one son, for instance. This diminishes the burden on each god, and makes it a bit easier.”

“Hmmm... Oh, s-so you, me, and Keima could all... maybe... have a baby together?”

Haku’s smile froze with an almost audible snap.

“That idea did not occur to me, but it wouldn’t be impossible, no...”

“Well... I guess that opens up a lot of options?” Rokuko said.

“M-More importantly! There is a more practical method here, Rokuko!” Haku said, quickly moving on. “As I said, Father is quite an incredible god. Thus, if you ask for his help, you will be able to safely give birth.”

“Wait, so... Um, wouldn’t that be having a child with Father?!”

“No, you would only be taking his power. He gives us clumps of power equal to that which we use for making children ourselves, so we can recover the power we expend. Naturally, that power comes at a price, but it makes for relatively safe births.”

“Oooh! I didn’t think of that!” The scales fell from Rokuko’s eyes. Indeed, she could just get Father to help!

“Well, either way, you will still be cutting off some of your power, so you’ll need to wait some time before making a second one. It takes a bit before your power replenishes and adjusts to your body again. I would say it takes about a year or two?”

“I see...” Rokuko nodded, which earned a satisfied nod back from Haku.

“And that’s how we Dungeon Cores make children. Did you catch all that?”

“Yes! Thank you, sister!”

＊ ＊ ＊

And so, we arrive at the present day. The seasons passed, and spring arrived again.

The Dungeon Core assembly that year ended peacefully, and as Rokuko walked through Goren, the town atop her dungeon, she came across the couple who had been married at the Beddhist church some time ago.

“Oh, Hubb and Waife. How are things?”

“Aaah, Mrs. Goren! It’s been too long. Both me and my wife are just fine, thanks to you,” Hubb replied with a grin. Waife looked a bit sick, though, which gave Rokuko pause.

“Are you okay, Waife? Hubb isn’t abusing you, is he? You two are the first couple married at the Beddhist Church, so I’d like for your marriage to be a happy one... Also, look at that stomach! Did you get fat since the last time I saw you...?”

“Erm... Well, I suppose that’s one way of looking at it,” Waife replied, while awkwardly yet still happily stroking her belly. It was, indeed, quite swollen. Rokuko questioned why her stomach was only swelling in one specific area, which seemed abnormal, but the couple soon answered her question with big smiles.

“Thanks to you, we’re finally expecting.”

“Expecting?”

“Yep! My kid’s inside this belly!”

Ah, that explained why they looked so happy. They had a child. Wait... A child?!

“Um, why is there a child inside her stomach? Did she eat it?! Why?!”

“Er... What are you talking about, Mrs. Goren? We’re a couple, so obviously we ha— ow!”

“Ahem. Putting aside that whole eating business... Mrs. Goren, do you not know how babies are made?” Waife asked after flicking Hubb on the side of the head.

“I obviously know that. My sister told me just recently. A husband and wife need to borrow power from Father and fuse their energy together, right?”

“What the heck are you talking about?”

“Um...?” Rokuko faltered. “I-It’s the kissing part then, right? Is it the kissing?”

This time, she tried what she had heard from Redra. She was absolutely confident the power-fusing ritual Haku had spoken of was kissing, so she answered concretely despite the embarrassment. Though she forgot that Redra had said afterwards that that wouldn’t be enough to make children.

Hearing that, Hubb and Waife began whispering between themselves.

“Uh, Waife. I’m starting to think the town chief’s wife might be, y’know, something of a sheltered rich girl...?”

“Mhm... That’s what it feels like. No doubt she ran off with the town chief before she got a proper education. She’s the type to think fairy tales are real.”

Hubb and Waife settled on Rokuko being an ignorant girl born with a silver spoon in her mouth.

“So, what’re we gonna do? Actually, this means the town chief’s not doing anything with his wife at all. And she’s so pretty, too... All those rumors about him being a lolicon must be true after all.”

“We’ve realized something we shouldn’t have... At this point, our only option is to take responsibility and tell her the truth.”

Thus concluded the secret chat.

“Mrs. Goren, we’ll tell you how children are really made... Do you know what pregnancy is?”

“Nuh-uh.”

Unbelievably, they had to start all the way from zero. Waife let out a sigh.