The Yin Brand of Conception
Brother furrowed his brow in thought before reaching out to caress Madam’s plump lower abdomen. “Ekaterina, do you want to have a baby?”
“As your wife and the mistress of this household, I feel the duty to bear an heir for the family… but honestly, my desire to carry your child is far stronger.”
“Alright. I’m already pushing mid-thirties. It’s time we started thinking about family planning.”
“Hohoho, how about one son and one daughter?”
“That sounds good. But can we actually choose the baby’s gender?”
“With Elisha’s help, it’s possible.”
“Oh? Really? That’s fascinating.”
While the three of us concubines listened in silence, brother and Madam happily discussed their future family. Madam skillfully guided the conversation so that only she would bear the children.
A short while later, after brother left with Ruya and Charlotte to explore the northern region, Madam and I remained alone.
“Elisha, you mentioned you could combine my eggs with my husband’s sperm to create a child with the finest genes, correct?”
“Yes, it’s possible.”
As a Succubus capable of harvesting female eggs and an Abaddon with gene-combination abilities, I could influence pregnancies beyond my own.
“Then, when the time comes, please ensure the child possesses the best possible genes.”
“Yes, Madam.”
Since we had no idea when we might return to Earth, we decided to begin preparations for the next generation immediately. First, we focused on Madam’s body—the vessel that would carry the child.
Lying naked on the largest bed on the fourth floor, I rubbed her lower abdomen with a hand filled with essence and explained.
“From now on, the pattern engraved on your lower abdomen will be a yin brand specialized for conception. It absorbs essence to protect the mother’s health, maintains the uterus in a constant state of readiness for pregnancy, and supports fetal growth, among other benefits.”
“My, I had no idea such a pattern existed. As expected, Elisha is perfectly suited to serve as Erutina’s apostle.”
“While engraving the pattern, I’ll also extract eggs. I’ll combine eggs taken from my own uterus with brother’s sperm to create a fertilized embryo, then implant it into your womb. That will complete the process.”
“So I’ll get to experience in vitro fertilization firsthand. Hohoho.”
“Let’s begin.”
I raised my fingers and, using the tips of my nails, began tracing the conception pattern among the various yin brands I had learned from QA. Succubus yin brands generally took the shape of a uterus, but the conception pattern was especially explicit. Unlike the heart-like or subtly stylized designs of other brands, this one was unmistakably a detailed rendering of a uterus, complete with fallopian tubes, ovaries, and even the image of sperm invading an egg at its center—an unmistakably lewd design.
While drawing the pattern, I extended my succubus tail and gently stroked Madam’s slightly parted labia. The slightly darkened inner lips fluttered against the tail as it slid between them.
“Ugh.”
“The essence makes the stimulation quite intense, doesn’t it?”
“Mm…… It is rather sensitive.”
Aroused by the essence, Madam’s vagina was already dripping with love juices. I flicked the engorged, ring-bound clitoris—glistening with transparent fluids—with my soaked tail.
“Ah!”
“Your clitoris is quite large, Madam. It’s satisfying to slap.”
“Ugh, are you daring to toy with me?”
Her flushed face and stern expression lacked any real dignity. Her voice, thick with pleasure, trembled slightly, undermining her authority even further.
“The more sexually aroused the subject becomes, the better the yin brand settles. Please surrender yourself to pleasure.”
“Even so… Aang!”
As Madam tried to reply, my tail struck her clitoris again, drawing a moan as her body trembled. After rubbing her labia and rhythmically slapping her clitoris to build intense pleasure and relax her entrance, I slid my tail inside.
“Aang~”
“Madam, you’re adorable.”
“Ugh, don’t look.”
She desperately tried to maintain her composure, but the pleasure of penetration broke through. She covered her face with both hands and turned away.
Heh. The usually authoritative and dignity-obsessed Madam, now gasping from pleasure given by her own concubine, her expression melting. She acts strong, but she’s just a female weak to pleasure.
I gently massaged every corner of her vagina, focusing on the most responsive erogenous zones.
“Hng! Please, go easy.”
“Shh. Just surrender to me and enjoy for now.”
“Haang!”
Though her high divine power prevented me from using charm magic to heighten her sensitivity, infusing essence alone was more than enough.
With fewer ornate decorations, engraving the yin brand didn’t take long. Before long, I infused the completed pattern with my essence to activate it.
“It will take some time for the yin brand to fully settle. In the meantime, I’ll make sure you enjoy yourself.”
“Ugh.”
As Madam, panting with pleasure, bit her lip and held back on the verge of climax, I suddenly stopped all stimulation and firmly pinched her even redder, swollen clitoris.
“Kyaaak! Mmph!”
“Oops. If you’re too loud, someone might come.”
I quickly covered her mouth as she failed to suppress a scream. Her face twisted in a mess of pain and orgasmic pleasure, her body trembling as her eyes rolled back.
Inducing orgasm through pain on the sensitive clitoris was the most basic method of developing masochistic tendencies. Repeating this orgasm torture would link pain with the pleasure of climax in her brain, gradually making her associate pain itself with pleasure.
Since Madam didn’t understand masochistic pleasure, I decided to use this opportunity to cultivate her masochistic side.
“Mmph! Mmph!”
“Now, doesn’t infusing essence feel better? Cum again.”
“Ugh!”
Placing my hand on her forehead and channeling essence, her eyes grew even more unfocused. After repeating the orgasm torture several more times, her brain seemed to begin interpreting pain as pleasure—she started reacting with arousal even to strong twists of her nipples.
Licking the essence-mixed love juices from my tail, I savored Madam’s disheveled state. Now unable to even moan, she writhed her hips, completely lost in pleasure, while the vivid conception pattern on her lower abdomen glowed a bright pink.
A strange satisfaction welled up at the sight of the always neat and proper Madam reduced to such a thoroughly ruined state.
“Now you understand, don’t you? Masochism feels good. It’s a female’s instinct.”
I continued whispering into her ear, brainwashing her unguarded, pleasure-drunk mind. After bringing her to climax a few more times, I decided it was enough.
“Shall we finish? Enjoy one final, ultimate orgasm.”
“Ugh!”
While splitting my tail to inject ovarian modification fluid into her ovaries, I poured all the essence I had absorbed from her directly into her uterus at once. The pain of needles piercing both ovaries and the agony of her clitoris being twisted mixed with the overwhelming pleasure of the essence flooding into her, driving Madam to a rapturous climax. With wide eyes and a convulsing body, she squirted love juices before finally fainting from the excessive pleasure.
“Mm, was that too much? Madam has such strong mental fortitude, so I went a bit hard……”
I hadn’t expected her to faint, so I was slightly flustered.
“Anyway, let’s collect the eggs.”
Thanks to the ovulation stimulant injected along with the ovarian modification fluid, the rapidly forming eggs were all harvested one by one. After neatly arranging Madam’s unconscious body—legs still spread like a frog—I sat on a nearby chair and examined the eggs now inside her uterus.
Hmm. Perhaps due to the influence of divine power, parasites, and essence, the eggs were of exceptionally high quality. In terms of grade, they exceeded A-rank and reached S-rank? Heh, her maximum intelligence genetic trait is higher than mine. Her maximum physical ability was barely higher than Elisha’s, but her intelligence lagged behind.
Honestly, these eggs were superior to those in Elisha’s ovaries that I possessed, so any resulting combination would yield a higher grade. Since they would be perfect for creating the bioroid bodies of my younger siblings—who prioritized intelligence—I selected the best egg, set it aside for storage, and used Las to create a small space beside the ovary to keep Madam’s eggs.
Thinking of my younger siblings reminded me that Elsa had been far too quiet for over two months. No—she hadn’t spoken to me even once. Even the essence check had been performed alone according to the manual. I had assumed she was simply busy, but what if something had gone wrong?
With sudden worry, I headed to Elsa’s laboratory in the mental space for the first time in a long while.
The mental space, endlessly modified and expanded by Elisa and Elsa, was vastly different from the simple space originally created by my brain alone—it was now incredibly complex and vast. By now, the Abaddon brain occupied only a tiny portion, just my single room, while artificial brains and implants dominated the rest.
Since authority over the mental space had been transferred entirely to my master Elisa when I became a doll, the only space I could freely use was my own room. Without the navigation’s route guidance, it was easy to get lost.
Starting from my room at the outermost edge of the map, I passed through Elisa’s large central district and made my way toward Elsa’s area on the opposite side.
Elisa’s district was filled with neat, orderly laboratories, reflecting her personality. After walking past rows of aligned labs for quite some time, I finally reached Elsa’s area.
Elsa’s district was unique. At its center stood a large human-horse arena, surrounded by stables, milking stations, SM rooms, and laboratories. Farthest from everything else was Elsa’s personal room.
“Elsa, I’m here.”
I knocked to announce myself, but there was no response. After repeating the knock several times, I had no choice but to use the emergency key and enter.
As soon as I stepped inside, I saw a large blackboard covered in various formulas and a research prosthesis modeled after my full-body prosthesis, disassembled on an experiment table. Passing by a head with its back open and electrodes plugged into the brain, I entered the bedroom.
And there I found Elsa, sleeping as if dead.
Elsa sleeping? How strange. I had set up the bedroom but had never seen her asleep, so the sight felt oddly unfamiliar.
“Elsa, wake up.”
Even after calling several times, she didn’t move. I shook her with my hands, and only then did she react.
“Mm…… Huh? Sister?”
“You’re awake? I was worried—I haven’t seen you for almost two months.”
“Ha~am. I was experiencing human sleep by implementing it as a system. I didn’t realize two months had passed.”
“Implementing sleep? How?”
“It’s a method where, while the AI dreams in a virtual space composed of random patterns, background programs related to system management—like system cleanup—run in the background.”
“Aha~”
I had wondered how sleep, something exclusive to living beings, could be replicated, but she seemed to have created something remarkably similar.
“Once this dream-travel system is complete, automatic maintenance will run while you dream, making things much more convenient.”
“Then androids and bioroids will be able to dream too. Elsa, you’re amazing.”
“The programming itself is surprisingly simple. By the way, I need to add a sleep-time setting. Since I made it so they wouldn’t recognize it as a virtual space, they don’t think to wake up on their own.”
“So you couldn’t wake up for two months, thinking the dream was reality.”
“At least you came to wake me. Thinking I might never have woken up is a bit scary.”
Elsa, as if truly frightened, wrapped her arms around herself and trembled.
Elsa got up from the bed, snapped her fingers to tidy herself, then stretched.
“Ugh! Haa~ The languidness and pleasant feeling after a good sleep are working normally too.”
“But why did you do it yourself instead of using me for the experiment this time?”
“This time, I thought it would be best to experience it directly.”
“Well, that makes sense.”
“Let’s see. First, shall we check what happened over the past two months?”
With her white lab coat fluttering, Elsa sat in a chair and played back the stored memory data as a hologram. As she quickly scrolled through the recordings of my vision, sounds, and thoughts, she asked,
“So we’re stranded in this world now?”
“Yeah. And there’s still no response from Earth.”
“Still, it’s fortunate that your fake family members are quite capable hunters. They’ve already secured some position.”
Elsa, who thought of me as Elisa’s daughter and her sister, referred to brother and the family as my fake family. Strictly speaking, it wasn’t wrong, so I didn’t bother to refute it.