The Human-Horse Arena
Master stripped off all her clothes, straightened her waist, and spoke. “I’ll change you before you put the suit on.”
“Yes.”
Receiving control of the body, I searched for the transparent tail to equip the bio-suit. A transparent tentacle tail grows near the tailbone of the bio-suit wearer; it serves as the attachment switch, just as before. Finding the tail and rubbing it, Tyriel poured out from my anus like a waterfall.
“Ugh… This excretion sensation is really…!”
Along with the intense feeling of excretion, Tyriel gushed forth and instantly wrapped around my entire body. My body, chilled by the cool underground city air, was enveloped in Tyriel’s warmth. Haa, so cozy.
After a moment, once vision connected, I checked my body. I looked where my body should be, but saw nothing. Sensing Tyriel actively moving its tentacles across my whole body—perhaps pleased after feeding recently—I followed the path Master indicated.
Suppressing the ticklish sensation of the tentacles on my soles with each step, I arrived in front of the previous building. Security androids still guarded the entrance, and people were entering. People?
“Those people are just ordinary humans, right?”
“Seems like it. Don’t tell me there’s something inhuman to gawk at inside too? Let’s follow them.”
“Yes.”
The bio-suit demonstrated its performance clearly. Passing the androids that failed to recognize me, I observed the people strutting ahead. Following an android that seemed to be guiding at the front, they looked like nouveau riche who had covered themselves head to toe in luxury brand items. Each wore a different mask, so their faces couldn’t be photographed.
“This is my first time here, but is the human-horse race really that fun?”
“Hahaha, it’s incomparable to regular horse racing. Just don’t faint from shock.”
“Last time I came, Jerry was the best mare. How about now?”
“Jerry’s still active. Lost the top spot, but still takes first place now and then.”
They chattered nonstop about the human-horse races as they moved. If it’s the human-horse race, it’s what Isabel mentioned. A race where people run like horses.
“Can we film the human-horse race scenes?”
“Hmm. If it’s just people running in a race, why call them human-horses? There must be more to it.”
“Now that you mention it, you’re right.”
After passing through a corridor decorated rather lavishly for the bleak gray underground city and through a massive door, the racetrack revealed its enormous form. On the track smoothly coated with rubber, people who appeared to be human-horses were running, while spectators in the stands installed around the track watched.
The appearance of the human-horses made it immediately clear why they were called that. With arms bound behind their waists and fixed in corsets, ball gags in their mouths, eyes covered by masks with colorful manes flowing behind, and wearing high-heeled boots, women of various decorations pulled carriages while running. The jockeys riding the carriages continuously whipped them and used reins connected to the ball gags to direct their movements, handling the human-horses.
The human-horses, running fiercely with legs raised high, drooled through their ball gags, turned as directed by the jockeys, and circled the track. Sweat pouring from their entire bodies flowed over heaving breasts and moving limbs, scattering into the air.
“As expected, it wasn’t just running. Seeing them like this, they really are human-horses.”
“Shall we watch for now?”
“Once this race ends, they’ll probably head to where the human-horses wait. Let’s go there.”
“Yes.”
The race, which continued for several more laps, ended when one human-horse crossed the finish line. The spectators, who had apparently been betting, shouted with mixed joy and sorrow. There were quite a lot of people. Just like the previous monster gangbang show, the human-horse arena also had so many visitors—how did the secret not leak out?
“With so many people watching, how is the secret being kept?”
“These ugly secrets actually become a tight lock between those who share them. They’ll be careful in selecting guests, and they’ll watch each other too, right?”
“I see.”
Because it’s a secret that can’t be told to others, it becomes a shackle? No, rather than a shackle, it might be functioning as another chain of power.
After slowly circling the track and responding to the spectators’ cheers, the human-horses and jockeys entered a space on one side of the track and disappeared. Carefully jumping down from the stands and landing on the floor, I stealthily entered the open space. Sticking to the wall as I went inside, androids were washing the finished human-horses and carriages with hoses. Despite the considerable water pressure, the human-horses only breathed heavily without any particular reaction, standing upright in a motionless posture. The androids washed them with foaming brushes and rinsed them again. The human-horses, standing still and being washed, were led somewhere by the androids holding their reins.
Following them carefully to avoid getting wet, I came to a space divided into stalls like a stable. The androids removed the blindfolds and ball gags from the human-horses standing in front of each stall, checked their health as they breathed heavily, then put them into the stalls and left.
Waiting until all the androids had gone, I approached the stalls. Peering into the largest and widest stall, I saw the human-horse that had won the previous race kneeling and lowering her head to the feed trough to eat. With her arms still bound in the corset, she was eating only with her mouth.
“I can only see her back because of the angle, but her muscles are incredible.”
“She has to pull a heavy carriage with a person on it while running. And since this human-horse even won, she must be even more outstanding, right?”
The muscles of her legs, thighs, and back visible between the corset were an enormous, muscular build incomparable to Master’s body. Hmm, the other human-horses are all incredibly muscular too. Well, the carriage looks heavy, and with a person riding it while running, it’s no wonder their muscles developed like actual horse muscles.
“We’ve filmed the stalls, so let’s go inside.”
“Yes.”
There was another passage besides the one the androids had entered earlier. It was dark with no light coming in, but perhaps because Tyriel, the bio-suit, was substituting for my eyes, I could see well even in the darkness. Following the passage inside, I saw a room with what appeared to be harness equipment hanging. Ball gags, blindfolds, corsets, high-heeled boots, and whips were neatly organized.
“This must be a storage room.”
“Yeah, doesn’t seem like there’s anything special.”
I came in thinking it looked like there might be something, but there was nothing. Returning through the passage to the stalls, I headed toward the passage the androids had entered, leaving behind the human-horses resting on their sides on the straw-covered floor—perhaps having finished eating in the meantime.
Passing androids carrying containers filled with something and going deeper, I found a room with machines that clearly looked important. Inside a cylindrical machine-like device was what appeared to be a computer setup.
“That looks important. What should we do?”
“There’s no sign of androids coming in, but hmm…”
“Is there a less risky way?”
“I’ll try telling Tyriel to open just the neck part.”
While Master explained to Tyriel, I carefully entered the cylindrical machine. Hmm, it seems safe for now…
Clank. Startled by the sound of something locking, I turned around to see the entrance of the cylinder had closed. What? Why suddenly?
“What? What’s happening?”
“I don’t know. It suddenly locked.”
Touching the locked part with my hand, there wasn’t even a slight gap. As I fumbled around in panic, the screen of the computer in front lit up, and a mechanical voice flowed out.
“Unregistered mare confirmed. Executing registration procedure.”
“Mare? More importantly, how did it recognize me?”
“Isn’t there any way? We’re going to get caught at this rate!”
“I don’t know either!”
Mechanical arms emerged from all sides and began flailing around. As I dodged to avoid being touched as much as possible, the mechanical voice sounded again.
“Resistance from the subject confirmed. Executing suppression procedure.”
“Suppression? Aaaagh!”
Along with the words about suppression, electric shocks were discharged from the mechanical arms, sending intense pain through me. As my vision blurred and consciousness faded, Tyriel also couldn’t hold on any longer and was released, sucked back into my stomach. Ugh, I can’t endure anymore…
My body lost strength and collapsed to the floor with a thud, and the electric shock stopped, allowing me to barely avoid losing consciousness. As I gasped for breath from the pain, mechanical arms grabbed my limbs, forcibly raised me, and fixed me in place.
“Ugh, Master. I can’t put any strength into my body.”
“Kugh, how on earth did it know we came in? I didn’t detect any sensors!”
I tried to exert strength into my trembling body, but my muscles were overly startled and wouldn’t move at all. A machine that grabbed my lowered head and lifted it spoke.
“Identity verification complete. High-grade dairy cow, Elisha. Judging per regulations that she has volunteered as a human-horse. Executing free mare registration procedure, not slave mare.”
The machine grabbed an ear tag, connected a cable, and began doing something. Soon after pulling the cable from the ear tag, the machine spoke again.
“Free mare registration complete. Executing basic mare treatment.”
As strength slowly began returning to my body and I tried to pull my arms, they were bent and fixed behind my back with even greater force. Soon I could feel something fixing my arms.
“Something is binding my arms. Nngh.”
“Try putting in a bit more strength!”
“I can’t put proper strength in because of the posture!”
The wall in front opened, and a corset that I had seen in the storage room appeared, spread out. The corset that approached wrapped around my waist, locked behind my back, and was strongly tightened and locked. It was similar to the latex suit I usually wore, so it was bearable, but having my abdomen wrapped in hard material made it even more uncomfortable. With clacking sounds, the corset combined with whatever was binding my arms, rendering them immobile. High-heeled boots like those the human-horses wore were put on my feet and locked, and a ball gag was placed in my mouth, making it impossible to speak.
“Ugh, I can’t move my arms at all.”
“This is bad. We were too careless.”
“Ah, the blindfold too…”
Even the blindfold was put on, blocking my vision. The mechanical arms released the body they had been holding, and I could stand on the floor. I staggered for a moment from the extremely high heels, but barely managed to stand without falling. Suppressing the drool that threatened to flow from my forced-open mouth, I moved my stifled body when the machine spoke.
“Treatment complete. Trainer has arrived. Handing over.”
With a clanking sound, I felt the door behind me open. Standing awkwardly since I couldn’t see at all, I heard a woman’s voice I had never heard before.
“What? I got called here suddenly and there’s a new mare? Let’s see. A free mare? An angel who volunteered herself?”
“Mmmph, mmph.”
“Be quiet.”
Smack! Startled by the sudden stinging pain on my buttocks, I stopped making noise, and she continued.
“Former angel, high-grade dairy cow, and even doing human-horse racing? A greedy child. Moreover, with piercings on your nipples and clitoris and tattoos drawn front and back—you’re quite the lewd child. Still, since you volunteered as a mare yourself, I like it. I’ll train you to be the best mare. Now, let’s go.”
The strap connected to the ball gag wrapped around my face was pulled, and I was led away with awkward steps. As I was silently dragged for a while, I gradually grew accustomed to the high-heeled boots.
“Damn, this is bad, but it’s fortunate that infiltrating to extract information wasn’t discovered. For now, let’s observe the situation and find a way to get out of here.”
“Yes, Master.”
Now that my arms couldn’t move and my eyes and mouth were blocked, escape was impossible. As Master said, I should obediently follow for now and escape when an opportunity arises.
“First, let’s measure your athletic ability. I’ll remove the blindfold, so you need to stay still, okay?”
“Mmmph.”
When she removed the blindfold, my eyes were dazzled by the bright light. Blinking and looking around, it was a place similar to a training ground with several running machines and various training equipment. Looking at the woman holding the blindfold, she had short brown hair and was wearing a short-sleeved t-shirt and long pants.
“You run on the machine. I’ll gradually increase the speed to test you, so run hard.”
She pulled the reins to make me stand on the machine, then tied them in front. As I stood awkwardly, she activated the machine and spoke.
“Run with your legs raised as high as possible. Keep running until I tell you to stop.”
I had no choice but to run to match the gradually increasing speed. The high-heeled boots reaching up to my thighs—with heels that must have been 8cm—made it extremely uncomfortable, but I could somehow manage to run. Breathing became difficult because of the ball gag, and as I panted while running, the trainer swung a whip and struck my buttocks.
“I told you to raise your legs high! Higher!”
“Mmmph!”
Only after running with my legs raised nearly to a right angle could I avoid being whipped, despite how difficult it already was. Ugh, even with a body that received muscle enhancement, this is harder than I thought.
“Good, I’ll teach you the perfect form separately later. For now, since we’re measuring ability, keep running.”
The ability measurement that began that way continued over a long period. Only after running as if sprinting for over an hour could I finally stop, and various physical ability measurements like how many squats I could do at maximum exhausted me. As I gasped heavily with drool flowing from my forcibly opened mouth, the trainer spoke.
“Are you really a first-time mare? What’s with this physical ability? With this level, if you receive proper training, you could immediately become the best mare…”
“Hoo, huff.”
“In my entire career as a trainer, I’ve never seen a mare as naturally gifted as you. Formal training starts tomorrow, so rest for today.”
When the trainer pressed a pager, an android approached and took the reins. Leaving behind the trainer who disappeared saying “See you tomorrow,” I was led by the android and, just like the other human-horses being washed, had water sprayed from a hose, was soaped with a brush, and rinsed. Only after the android thoroughly dried my body with a towel was I allowed into an empty spot in the stalls. After the android removed the ball gag and closed the door before disappearing, I could finally sit on the floor and rest.
Whoa, I’m exhausted.
“Ugh, it’s really hard. It’s been a while since I’ve been this tired…”
“Rest a bit for now. You worked hard in my place.”
“Since I’m better at exercise than Master, it can’t be helped.”
“Shut up. More importantly, I’m hungry. Aren’t they going to give us food?”
Sitting and resting on the floor, I was definitely very hungry. Ah, is Tyriel okay?
“Is Tyriel okay?”
“The outer camouflage part got a bit burned, but it’s fine. Still, it says it can’t camouflage for a while, so it needs to rest inside the stomach while recovering.”
“I see. Whew, I’m going to lie down for a bit.”
Lying on my side on the spot covered with fluffy straw, fatigue washed over me. Smelling the scent of dried grass, I dozed off and fell asleep.
Suddenly waking from sleep, I found Master moving the body. She was lowering her head to the feed in the trough and eating. The food, which at a glance looked like porridge, had a thick texture with chunks mixed in, but surprisingly tasted good.
“Master, I woke up.”
“You woke up? I’m eating right now.”
“Yes, I can see.”
“This is surprisingly delicious. It’s a bit inconvenient to eat, but it can’t be helped.”
After licking the bottom of the feed trough clean, Master let out a satisfied sigh and handed over control.
“Ow, I’m full. I’m going to sleep a bit more.”
“Yes.”
With food on my face, I unconsciously tried to use my hand, then remembered my arms were bound when they didn’t move. Having been bound with my arms behind my back for a long time, my arms were numb and the sensation dulled. As I stretched my body here and there, feeling slight muscle pain, the door opened and an android entered. As soon as it came in, it thrust a ball gag into my mouth. Reflexively pulling my head back, a fist flew into my abdomen without the corset.
Thud!
“Ugh…”
“Don’t resist, mare.”
The android that put the ball gag on my face, which had bent forward from the pain, pulled the reins. Feeling the tingling in my abdomen as I walked, I was able to meet the trainer again. She took the reins from the android and dragged me to the training ground. Untying the reins connected to the ball gag in the training ground, she spoke.
“Today, you’ll learn the joy of running as a mare. It’s the most important training, so receive it diligently.”
“Mmmph.”
“This is a device for training. Raise your head.”
What she held in her hand was a device that wrapped around the neck. Having no choice, I raised my head, and the device was fastened around my neck. Automatically shrinking to fit snugly against my neck, the device extended a small needle that pierced into my neck. It stings…
“Now you just need to keep circling this training ground. Now, run!”
“Mmmph!”
Smack! Struck by the whip hitting my buttocks, I began to run.