I stood alone in the center of a massive temple that seemed to naturally inspire faith just by looking at it.

All around, white-winged angels with rings on their heads were praying devoutly with their eyes closed, and I stood in the exact center surrounded by them.

Completely naked without a thread on me.

Ah- Ah- Ah- Ah-

All the angels sang in chorus, raising an aria. A woman in a one-piece with silver hair descended from the ceiling, flapping thirteen wings, and landed before me.

"Goddess...?"

I instinctively knew she was the one and only existence the Goddess Church revered—the Goddess. From her hair to her eyes, everything was sacred silver, and even I, a demon, felt warmth in my heart.

"Thank you for your hard work."

The Goddess met my eye level and grabbed my hand. In a situation shaking hands with a god, I couldn’t tell if this was a dream or reality.

"Uh, um..."

"The new life you created by exchanging your life will become the cornerstone of the future that will lead this world. You’ve worked hard." 𝓯𝓻𝒆𝙚𝒘𝓮𝙗𝓷𝒐𝓿𝙚𝒍.𝙘𝓸𝙢

"No, well... I just did what I had to do."

I just came because I wanted to cum. But the Goddess smiled softly as if she knew my true feelings and patted the back of my hand.

"I want to bestow blessings on you who understand and follow my will better than anyone else, but... unfortunately, I truly regret that I cannot."

"If the Goddess blesses a demon, don’t I die right away?"

"Exactly."

Divine power is extreme poison to demons. The Goddess’s power hitting directly would be like showering my whole body in sulfuric acid.

"So I bestowed a holy sword on someone who will support you. He safely passed the test and became a hero who uses the holy sword."

"What?"

"But I came to the conclusion that it would be difficult for that to directly affect you. So I want to give you one good gift."

When the Goddess waved her hand, a golden-haired angel with ten wings offered a piece of paper to the Goddess. I received the paper from the Goddess.

[Super-Strong Aphrodisiac Recipe That’ll Even Take Down the Demon King]

[Julienned Mandrake Root]

[Tears of a Climaxing Dryad]

[Succubus’s Virgin Blood]

[Powdered Pink Dragon Scales]

[Wingless Angel’s Feather]

[Thread Personally Extracted by the Spider Queen]

[Blood Drawn from a Vampire Lord]

"Huh?"

"This will be a good signpost for you. With this, no being will be able to beat you in bed."

"No, wait. Goddess?"

"If you can make this... I have one request."

The Goddess prayed to me with her hands together.

"I hope you’ll share one bottle with me. You just need to pray to me and offer it as a tribute. Please, I beg you."

"Excuse me? This dream is too weird—"

"I want to entrust the world’s future to your humanity. Please, I beg you, being from a distant place."

"...!!"

I couldn’t answer. Before I could respond, a ten-winged angel flew toward me and pulled my face into her chest.

Soft. Squishy. Fluffy.

I felt the warmth of a cradle. The angel hugged me so tightly with her chest I could barely breathe properly. Thanks to that, I lost consciousness buried in the angel’s chest.

Ah, I see. This is heaven. I quietly closed my eyes.

***

"Did you cough? You were sleeping so comfortably I thought you’d passed away."

"Joking right when I wake up..."

Shaitan was lying naked on top of me, smiling broadly. She was already urging me to ejaculate by sneakily wrapping her tail around my dick to stimulate it.

"What time is it outside?"

"Midnight."

"How much time passed here?"

"About ten days. The festival outside finished and everyone fell into deep sleep. Cleanup’s done too."

"I see... that’s good. Sorry for making you work hard, Shaitan."

I stroked Shaitan’s horns and head. Ten days may sound like nothing, but watching over me the whole time while I just slept to recover stamina couldn’t have been anything but a huge ordeal.

"By the way Shaitan, did you access my dream?"

"...? No. You told me not to, so I didn’t even try."

"Really?"

The last dream I had was probably just nonsense. The Goddess giving me a super-strong aphrodisiac that could even take down the Demon King. And all the ingredients were shocking items.

’The others aside, but succubus virgin blood—’

"Shaitan."

"Yes."

"What do you need to do to evolve to 5-star?"

Shaitan’s grade was ★★★★. So to revive her virginity—no, to add one more ★, some special means were needed.

"Well, wouldn’t I just need to reincarnate?"

"So sowing is the answer after all?"

"Yes. Haven’t you checked? Though I’m a seal, I’m also a dungeon member who can be sown."

"Y-yeah, that’s true."

I hadn’t easily thought about sowing seeds in and impregnating the Demon King’s daughter. Unlike other women, I was somewhat cautious about sowing with Shaitan.

"You’ve been converting all the seeds sown so far into mana, right?"

"Yes. That’s the driving force that lets me use the system. Originally I should use my own mana, but I’ve been substituting with the mana you give me, Master. If I have your child... there’s a pregnancy penalty."

"That means..."

"Yes, I can’t use the system during pregnancy. It’s a kind of restriction the Demon King placed on seals."

I thought it might be the Demon King’s small consideration so that even if they had physical relations with a Legion Commander, they could safely give birth.

"During pregnancy... still, I’m curious so shall we take a look?"

"I was waiting. Hehe, don’t be surprised when you see."

I pressed the system window as Shaitan led. Since we shared the same system, Shaitan and I could see the same screen even while facing each other.

[Rok Grimfang Shek x Shaitan: Dungeon Lord and Succubus Madam Union]

[Expected Result - Shaitan]

Succubus (☆☆~☆☆☆, 17.4%)

Succubus Lady (☆☆☆~☆☆☆☆, 69.9%)

Succubus Queen (☆☆☆☆☆, 12.7% - Seal Bonus +12%)"

"Wow. Isn’t the Demon King openly telling you to get pregnant? How many stars is that total?"

"I think it’s less than Lune though..."

"Lune was born 5-star. And Lune was absolute chaos even at 1-2 stars. If I just couldn’t break her hymen—if she could’ve laid eggs, it would’ve been amazing, right?"

Wouldn’t our dungeon’s main force have become goblins instead of slimes? Whether those goblins would be the goblins I knew well or have fairy-like appearances buffed by Lune, nobody knows now.

"Hehe. You really are our dungeon’s treasure, Shaitan. So do you want to get pregnant?"

"I’m ready anytime. If you want, Master, I’ll put it in right now."

"No. There needs to be a successor to manage the dungeon."

"If I transfer the seal, it would probably be possible. Since we acquired one, we could grant that. But the danger would increase too. For example, if we grant the seal to Gremory, she’d utilize the system well without separate handover, but—"

"Those targeting the seal might target Gremory too."

There was no need to take the risk. Just confirming the possibility was enough.

"But Shaitan, you weren’t hugging me the whole time I was asleep, were you?"

"Of course not. Don’t I have the mission you assigned me, Master?"

Shaitan pointed slightly to the side. Along with Shaitan’s lavender scent, I sat up holding Shaitan amid the faint lemon scent.

"Hehe, she’s ripened well."

"Hkk, mmm...!"

Lucifer. Shaitan’s half-sister. The Demon King’s daughter.

She had a leather collar tied around her neck, lying prostrate like a dog licking up semen from a bowl.

"As expected, training is all about the neglect play."

"I made her feel the same sensations in dreams when she slept in between. Do you want to use her back right away?"

"Yeah. But not the back. I have an experiment to try too."

I got up from the bed holding Shaitan and sat on top of Lucifer lying face-down on the blanket. The blanket was so damp that humid air rose up the moment I put my knees down.

"Is this position a bit uncomfortable for fucking? Can’t be helped."

I released the restraints binding her with the iron rod. The moment the restraints were released, Lucifer collapsed sprawled on the floor.

"Shaitan, I think Lucifer collapsed because you’re heavy?"

"Master?"

"Skill issue!"

"Ahem. Please don’t do that from now on."

Shaitan flapped her wings and floated in the air. Lucifer stuck flat to the floor, panting roughly. She must have been restrained in the same position while I slept, so I could see at a glance she’d had a hard time.

"Then shall we start? Shaitan, knife."

I cut off Lucifer’s underwear with the knife Shaitan handed me. She probably couldn’t wash properly while I slept, but Lucifer’s below wasn’t musty—it even had a fresh scent instead.

"This shouldn’t be... are seals special or something?"

"I put her inside a Slime Dragon once a day and washed her like a drum washer. The Slime Dragons have now mastered removing foreign substances from women’s bodies. Hehe, you could call them Doctor Slimes."

"I... see."

A slime shower. If you felt the sensation of Lime cleaning my dick after ejaculation all over your body, the sensation would be weird in many ways. I wet my hand with saliva and put it below Lucifer.

"Two fingers go in easily. Shaitan, did you loosen this side too?"

"I didn’t. While you were sleeping, Master, I’d occasionally release her hand restraints."

"Wow."

Had the pattern of someone being pickled in training already emerged where they couldn’t hold back pleasure and touched themselves?

"Good job. As expected, I should taste the front first."

Even if Shaitan’s tail had gone in I’d be a bit displeased, but if Lucifer’s own fingers went in, I could tolerate that much. I pushed the finger that had been lightly tickling the vaginal wall deep inside.

"Oh?"

I felt the familiar texture of a cell wall. At the same time, Lucifer’s body started trembling mercilessly. I recognized the existence of a membrane with the middle slightly open, and immediately pulled my finger out.

"Are most seals in this state?"

"Probably? Unless like me they fell for the dungeon master and offered themselves."

"Really?"

I grabbed Lucifer’s waist hard and lifted her up. Lucifer buried her head in the soggy pillow and didn’t budge.

"I saw you took out the ball gag when licking up semen earlier?"

"She’s forcing herself to hold back now. Until just now she was begging me to please stick in at least my tail because she couldn’t stand it. Hehe."

"Hehe, getting embarrassed."

Smack!

I struck Lucifer’s butt. Lucifer’s body shook greatly, and at the same time the slime dildo stuck in her butt slipped out about halfway.

"Wow, the back’s loosened well too. Shaitan, hold her down for a moment."

I immediately ran to the box and grabbed the one and only item. Shaitan tilted her head questioningly the moment she saw it.

"Didn’t you say you’d do an experiment?"

"Right. But something’s more important than experiments—training."

I put specially made black panties on Lucifer’s lower half. The slime dildo took up space so it was a bit of an ordeal to put them on, but I solved it with force.

"Master, what is this?"

"Ah, this is called a chastity belt. The union boss put his heart and soul into making it. Lucifer, got nothing to say?"

"..."

Lucifer kept silent to the end and buried her face in the pillow. Shaitan must have loosened her up well, but enduring to the end was a challenge to me.

"Shaitan. Call Hases. Have him watch and let’s go out."

"What?!"

Lucifer turned her head back like she was screaming. The blush rising on her face was also a signal she was properly in heat. My dick was also standing straight thanks to Shaitan’s tail caressing, but my dick compass was pointing toward someone else.

"Do I look free enough to fuck you right now?"

I had to make a schedule. I had to create a route. But I had to do that outside, not in the training room.

"You’re a meat toilet I can come use anytime. What? Too harsh? If our dungeon had lost, you would’ve treated Shaitan the same way."

"N-no—"

I grabbed the back of Lucifer’s head and shoved it back into the pillow.

"Enough excuses, I’ll let you touch your breasts if you’re bored."

I readjusted the leather binding Lucifer. I flipped her body 180 degrees to face the ceiling, tied chains to the leather straps on her ankles and hung them from the ceiling. Then I forced her hands and arms to fold and bound them tightly with straps.

"Perfect position to touch your own breasts with your hands, right? They say if you touch your breasts they get bigger. Touch and grow them if you’re bored."

While Shaitan summoned Hases, I grabbed Lucifer’s collar.

"Sorry, Lucifer. My dick’s a bit busy."