The Mare's Mark
The breeder who had been watching my reaction wiped the sweat from his forehead with his sleeve and let out a sigh of relief.
“Phew, I always get nervous when implanting a mark. If I slip up and get kicked by a mare, I could die.”
“Actually, one of the breeders last time was nearly killed by a mare’s kick.”
“That guy ended up crippled and had to retire. Such a shame.”
“And breeders are already as hard to find as trainers.”
While I lay there breathing, the breeder examined the inside of my stretched vagina once more, then nodded and removed the speculum.
“It’s properly installed. Now that you’re registered as a breeding mare, you may proceed with mating. Oh, and make sure to file the report.”
“Yes, thank you for your hard work.”
I cautiously opened the device encircling my cervix. As expected, the opening expanded naturally along with it. It looked like some kind of metal, yet it felt strangely fascinating.
“Let’s head back to the stable. Clean this up for me.”
“Understood.”
Led by the androids, I was washed thoroughly before returning to the stable. Enduring the dull ache still throbbing in my womb, I spoke with the trainer.
“Ugh, wasn’t that a bit too rushed?”
“Sorry. Did it hurt a lot? You were such a valuable mare that I couldn’t afford to lose the chance.”
“Exactly what does this mark do?”
“It’s proof that you’re a mare suitable for breeding. Only foals born from registered mares are automatically registered as human-horses.”
“Hngh, I see.”
“There are other functions too… would you like me to explain?”
“Yes, please do.”
“It detects the condition of your uterus and forcibly intensifies estrus during ovulation. It’s designed to make you want to mate, thereby increasing conception rates.”
The realization that I had become a complete breeding animal made my womb tremble slightly. Besides the forced estrus function, there were several others for maintaining the health of the uterus and vagina, as well as a feature that, upon conception, signaled nanobots to release pleasure-inducing chemicals in the brain to keep the host in a pleasant state. To pack so many functions into such a tiny ring—the technology was truly impressive.
After finishing his explanation, the trainer pulled a pair of earrings embedded with red gemstones from his pocket.
“And since you won again, it’s time to add another trophy. Show me your right ear.”
“Yes.”
Another trophy was attached above the one already on my right ear, making it two. Hehe, at this rate, both ears might end up completely filled like Jerry’s someday?
“Now that you’re a breeding mare, you can only compete once a year for the sake of body maintenance.”
“What? No one told me that. I want to race.”
The news that a mare couldn’t compete was like a bolt from the blue. Why was there such a rule?
“If you give birth once a year, your body needs rest before the next breeding. We allow one race in between. It can’t be helped if we want to avoid damaging your body, so please understand.”
“Ugh.”
I had already resolved to give birth, but a twinge of regret crept in. After the trainer left, I ate the feed the android had poured into the trough. I had already consumed enough essence to nearly fill my mare core, but I still needed to eat solid food for Tia’s sake.
By the way, the slime was still happily devouring essence. Just as I had taught it, it had taken root in the mare core, quietly consuming only essence and diligently producing essence crystals.
When I extended a tentacle to take one of the small crystals, it resisted and refused to let go. I slapped it sharply with my tentacle, and it finally released it. The slime, looking somewhat sulky, wriggled and began creating a new crystal.
So this was an essence crystal? The small, pink, jewel-like formation was a condensed lump of essence. As I examined it from various angles, one of the children hiding against the uterine wall showed interest and approached.
The child that had been observing the crystal detached the tail connected to the uterine wall and attached itself to the crystal instead. Huh? I thought Abaddon larvae avoided essence, yet this one clung to it.
Intrigued by the reaction, I watched as the child with its tail attached began absorbing the essence. The once-pale child gradually turned pink from the tail upward until its entire body became pink. Fascinated by this strange phenomenon, I examined it and found that although it was intoxicated by the essence and swaying dizzily, it was slowly adapting.
The other children, seeing this, began detaching from the uterine wall one by one and attaching their tails to the crystal. The ones that turned pink soon fell away, twitching. This reaction looked exactly like children on drugs.
More children, drawn by curiosity after seeing the first ones enjoy the essence, swarmed over and attached their tails. But the crystal was so small that the essence was quickly depleted. The children, now restless, began turning their heads one by one toward my mare core.
Huh? They weren’t planning to attach to the mare core, were they?
As I watched with growing unease, the swarm rushed forward and simultaneously plunged their tails into the mare core.
Ouch! It hurt. Don’t push them in so deep.
The children wriggling around the mare core began sucking essence directly from it. The dizzying pleasure of dozens of children simultaneously piercing the mare core with their tails and drinking nearly overwhelmed my mind.
Ahng. Why does this feel so good? I was clearly having my energy stolen from the succubus’s energy tank—the mare core—yet the sensation was pleasurable. As I floundered in ecstasy, I remembered that my brain had been modified by the researchers and finally understood.
The children, now pink from drinking their fill, swayed drunkenly on the essence yet refused to detach from the mare core. Some even burrowed deeper, settling completely inside it. The holes they made were quickly repaired and sealed, making it impossible to pull them out.
With no choice, I peeled off the ones clinging to the outside, gathered them, and set them aside before shifting my consciousness outward.
Jerry congratulated me on becoming a breeding mare, though she looked somewhat disappointed.
“You won’t be able to compete properly anymore. Terry left after becoming a breeding mare, and now Ellie’s leaving too.”
“Why haven’t you become a breeding mare, Jerry? You have far more championship experience.”
Suddenly curious why Jerry hadn’t been selected as a breeding mare, I asked. With her numerous championship wins, it wouldn’t have been strange if she had been chosen long ago.
“My uterus isn’t in good condition, so I’m unsuitable for breeding.”
Jerry said she had already been examined by a breeder. The result was “unsuitable.” Her uterus was too weak to carry children easily. She said she was actually glad, because slave mares selected as breeding mares were moved to a separate breeding barn, managed exclusively, and only made to give birth.
“I like racing. It’s the joy of my life. I’d rather run until the end as a racehorse than just keep giving birth until I’m discarded.”
“Discarded?”
The word “discarded” filled me with unease. The tone suggested something very unpleasant.
“If a breeding mare produces too many foals, no matter how well she’s cared for, her body eventually breaks down. Once she can no longer run or give birth, she’s useless as a mare.”
The human-horse races had a longer history than I realized. The arena, which had been operating for about fourteen years, had faced financial difficulties in its early days. To increase the number of human-horses, some race mares were forcibly reassigned as breeding mares and made to produce foals to their limit. As a result, the population of human-horses grew, but the overworked mares, no longer useful, were disposed of.
“What exactly does ‘disposal’ mean?”
“They say they’re released from the arena and sold elsewhere. Being unable to run is a death sentence for a mare, so they all leave in sorrow.”
“Where are they sold?”
“Mostly to brothels. Mares look no different from human women on the outside, have great figures, and possess excellent stamina.”
The final fate of mares who could no longer run was usually to be bought by customers who desired mares or by brothels. Jerry said that even after retirement, she was already reserved by a fan who was a customer.
The mares were used as livestock until the very end.
“In recent years, the number of mares coming in from outside has increased, so there haven’t been many breeding mares. Yet two appeared at once.”
“Then how many second-generation mares are currently racing?”
“Hmm, probably around eight. Most of them are above mid-tier. Second-generation mares have fairly decent average abilities.”
I recalled the unusually quiet mares. So the ones who ran well but somehow seemed empty inside were second-generation. Raised as mares without accumulating proper experience, they felt somewhat lacking, and it made me feel sorry for them.
Would the foal I gave birth to end up the same? I didn’t like that idea. As I fell asleep thinking that once Master ruled Eden, I would change the human-horse arena, I left the stadium.
Slipping past the androids’ gazes, I went to the spot where I had hidden my clothes. The clothes I found in the deserted building were covered in dust and dirty. I picked up only the latex suit and returned.
Before heading to the surface, I went to find Master and Mother. Both were in Master’s laboratory. Master, still working with a tail inserted in her vagina, greeted me as I opened the door and entered.
“You’re back?”
“Yes, Master. I won the race again.”
“Daughter~ Aren’t you going to greet Mom~?”
“Hello.”
I hugged Mother, who spread her arms wide, and then hugged Master as well. The extreme height difference meant I was completely enveloped in their embrace, which felt wonderful.
“I stopped by before heading up to the surface.”
“Alright. Always be careful.”
“Yes, Master.”
“Have a safe trip~”
Before leaving, I looked down at Master’s lower belly, wanting to consume some of her essence. The yin crest visible above her pelvic skirt was only halfway glowing, indicating it hadn’t been fully replenished yet. As expected, not much time had passed since she last fed, so it wasn’t very full. Since the slime and the children were still sucking essence from me, I needed to keep eating steadily, which meant I required more essence.
Ugh. It hurt. Another child must have stabbed its tail into the mare core, because I felt a stinging sensation. The pleasure that bloomed alongside the pain made me feel good.
On the surface, I first visited the laboratory to check on Isabel’s condition. When I arrived after walking briskly, Isabel was not there—only Lyana was.
“Hello. Is Isabel not here?”
“Mm, she said she wasn’t feeling well and is resting.”
It seemed the child had begun moving in earnest.
“I see. And you, sister? Is everything alright?”
Lyana hesitated for a moment, then lifted her skirt to reveal the inside of her thigh. There, the Queen’s tattoo was clearly engraved.
Oh my, she had fallen after all?
“Sister, that tattoo…”
“It’s proof that I am his Queen. I heard you are the leader of the Queens. Is that true?”
“For now, in Eden, I hold the highest rank.”
“Ahem.”
Finding her cute as she cleared her throat in embarrassment, I pulled her into a tight hug, patted her back, and said,
“Don’t be embarrassed. It can’t be helped if you’re a woman. Being chosen by them means you’re an outstanding female, so you should be proud.”
“…I think so too.”
She hugged me back, then pulled away and asked,
“What exactly are they trying to do?”
“Hmm~”
I thought it was too early to tell her about being sent to the western continent as a slave, so I told her that they would build a brothel exclusively for Blackmen in Eden and that she would work there.
“A brothel? I don’t want to be a prostitute.”
“You’ll probably be assigned to security work, sister.”
“That’s a relief.”
Perhaps because of her strong preconceptions about prostitutes, she openly showed her aversion.
“The only one who can have sex with me is Master.”
“Hehe, you’re completely hooked. Was it that good? Tell me about it.”
“How could I possibly talk about something like that!”
Rarely, her face turned bright red as she vehemently refused. Too bad. I had wanted to hear an android’s sex experience report.
“Anyway, don’t hold too much prejudice against prostitutes. It’s not such a bad profession.”
“Hmph. If selling your body for money isn’t bad, then what is?”
“It’s a service industry that provides comfort to customers. It consoles sadness, relieves desires and stress, and leaves them refreshed.”
I explained my thoughts on prostitution from an angel’s perspective. It was a thoroughly customer-centered way of thinking, but it was also the mindset of Eden’s prostitutes.
“I get it, so stop. At the very least, I won’t show open disgust.”
“Yes, that’s enough.”
Lyana spoke with a slightly fed-up expression.
Huh? Now that I looked closely, essence—which shouldn’t exist in a machine—was lingering in her lower belly. What was that?
“Sister, is there something in your lower belly?”
“Hm? It’s nothing.”
“Hmm, that’s strange.”
I approached her, lifted her skirt completely, and slipped my hand into her panties to touch her lower belly and vagina. Lyana flinched but remained surprisingly obedient.
Hmm, she had become quite submissive. The essence I felt inside was peculiar. It barely moved and felt like it was gathered in a round mass. It was slightly different from a woman’s essence.
Ah, could it be?
“Are you storing Master’s semen inside?”
“Eep! How did you know?”
Startled, Lyana tried to pull her hips back. I slid a finger into her vagina and lifted it, blocking her escape.
“Hic.”
“Hehe, deliberately keeping Master’s semen inside. You’re quite the lewd woman, more than I thought.”
“N-no! Master ordered me to…”
I teased her for a while before finally letting her go. Her vagina, being artificial, remained tight even after taking such a massive cock. I was a little envious of that.
“Haa.”
“Hmm, a liquid that looks like love juice is coming out. Is it lubricant?”
The transparent liquid flowing smoothly had a sweet fragrance unlike real love juice. Kate had been so confident—looks like the sex bot’s performance was excellent.
“As expected of a sex bot, your sexual functions are impressive.”
“Don’t call me a sex bot. It sounds vulgar.”
“Master likes your pussy too, right, sister?”
“Th-that’s… don’t ask me that!”
Ah, why was it so cute when the usually stiff Lyana got flustered? It made me want to tease her even more.
“Just go already!”
“Yes, yes. Master called for you, didn’t he?”
“Hey!”
As the door closed, I threw in one last remark, and a shout followed me out.