I am transported to the world of Monster Musume three years before the plot begins, at the time when the cultural exchange program between species is just being approved. I replace the original protagonist but retain my real name and appearance. The only change is my age — I'm fifteen now, the same as the protagonist at this point in time.
The first step is simple: spend money. But to spend money in this world, I need to have it here. I begin searching for trustworthy places to sell the gold and diamonds I've brought with me — treasures taken from my world and the others I'm already conquering. I move discreetly, selling across the globe, bringing in several million in total.
With funds secured, I begin executing my grand plan. First, I target land. I purchase the surrounding houses near the eventual main exchange residence, having them demolished and remodeled. Then, I track down the village where the Onsen for Extra Species will eventually be located. I buy it outright from its owners. I continue through the village, acquiring the old temple. I take one of the priestess girls Shuri will later train and place her in charge of the temple, instructing her on how to treat the future Kitsune girl — a rare variant of the fox races.
I don't stop there. I travel across regions, buying farms and green spaces, especially a forest that had long been abandoned and used to dump chemical waste. I use "Restore" to purify the land, leaving only the enriched fertilizer for the plant-type girls I'll eventually keep in a private greenhouse. I seal off a hot spring source, preserving it for the future.
Next, I dig deep into research — identifying companies that will hire species girls, both legally and illegally. I mark them for acquisition or investment in a few years, getting ahead of every move. I purchase a travel company and an aircraft solely for myself. My next destination: the underwater kingdom ruled by Meera Lorelei, the mother of Meroune.
Thanks to my body, breathing underwater is effortless. I reach their kingdom with ease, catching the attention of mermaids and aquatic races as I descend into the depths. They stare in disbelief — a human, breathing freely in the deep sea, no suit, no magic. Nothing but me.
Upon arrival, I request an audience with the queen. I don't have to wait long. Word of a human who can breathe underwater clearly caught her attention. The grand doors open, and I'm brought before Meera herself.
We introduce ourselves. I don't waste time. I explain my goals — requesting aquatic technology, materials to help construct specialized mansions and facilities that accommodate every species. I also make an offer: the true story of The Little Mermaid, a tale from a world far beyond her own. And a proposal — marriage to her daughter, Meroune. Business, sealed by blood.
She studies me closely, her eyes sharp yet intrigued.
"I agree with your proposals, Mr. Theós," she says calmly. "But I am intrigued by what you are. In the time we've spent talking — and I hope you won't be offended — my research team has found no trace of anything special about you. You are, by all scans, an ordinary human. And yet, when I look at you, you radiate a charm stronger than any race… greater even than the elves. You breathe in my ocean as if it were air."
I smile.
"It's no problem to tell you what I am," I reply smoothly. "Now that the other races are being accepted into the world, no one will care what I am — maybe they'll have problems with something else once they learn. And please, call me Ryan. We'll be family in a few years. Maybe even… very close."
"Well, you know my name. And now, for my race… I am the last true Dragon King. Not like the ones you know — not the diluted bloodlines like the Dragonewt, Ryu-jin, Wyvern, or Wurm," I say, letting the weight of those words settle.
My body begins to shift. My arms and legs stretch with draconic muscle, scaled and glowing faintly with power. Horns emerge from my skull, spiraling upward. A tail whips out behind me, thick and powerful. Wings unfurl, dark and enormous, as my aura begins to leak out.
"Similar to this, you've seen… but not this," I continue as my transformation reaches its peak.
Before Meera's stunned eyes, I take on my full dragon form. The throne room shakes as I grow, effortlessly filling the massive chamber. My body stretches 300 meters long, and my head alone towers ten times her own size. My presence alone eclipses everything around us.
"This is my true form," I say, my voice echoing like thunder. "And I can take the form of any creature… mate with any female being."
Meera freezes, shocked — but not from fear. Her body trembles, flushed. My aura, in this form, is impossible to suppress. It rolls off me in waves, ancient, primal, sexual. This is an ecchi world, after all — and her body reacts.
She gasps, then blushes hard, and in the next moment, she drops to her knees. Her robe falls, pooling around her, leaving her body exposed and begging for attention.
I return to my human form slowly, deliberately. But I leave the dragon tail and horns visible — a reminder of who, and what, I am.
As she stares at me, biting her lip, she moans, "I... I am willing to serve you… AaaaH!! And… do whatever… haaa!! you want!! Please!!! Take me!"
I step forward, voice low and firm. "If you want it so badly, you must understand — you can't be with another man. You'll belong to me completely."
"Yessss!! Whatever you want… I'm willing!!"
"Good."
I approach her, lifting her chin before kissing her deeply. My hands strip away her last undergarments, revealing her dripping, waiting pussy. There's no need for foreplay — her body is already trembling with anticipation. I push her back onto her own throne and slide inside her with one deep, slow thrust.
With a flick of my will, I seal the throne room off from the world, twisting the space itself. We're inside our own little dimension now. Time bends at my command — twenty-four hours here will pass as only one outside. I want to enjoy this.
My hands roam over her flawless skin, caressing and massaging her breasts until she's moaning uncontrollably. Her eyes glaze over, teary from pleasure, her voice reduced to cries and whimpers as I pound into her relentlessly.
Twelve hours pass like a fever dream.
By the end, Meera lies curled against my chest, breathless, trembling, satisfied beyond reason. I sit on her throne now — my throne.
"I made sure to fertilize your eggs," I tell her calmly. "It will be a girl. Make sure she's well educated. In two years and six months, you'll move into one of the hotels near my mansion — or into my mansion itself. The choice is yours."
"Yes, my lord," she breathes. "I will make sure to raise the princess well."
"Very good," I say, wrapping an arm around her. "Let's stay like this a little longer… before I have to leave."
"Mhmm…" she hums softly, curling tighter against me.
A while later, we got clean and dressed. I deactivated the space-time barrier. We exchanged private contact information, shared one final deep kiss, and I left, swimming my way back toward Japan. But on the way, I stumbled across something unexpected.
An island of centaurs.
At first, I thought it might be the one Centorea comes from — but quickly realized it wasn't. Her homeland is governed by noble bloodlines. This village, on the other hand, was different. Here, they had two chiefs — a male and a female — who each led their respective gender. Their customs were wild. The strongest male could mate with any female he desired, even if she was married, so long as he could defeat her partner in a challenge. And the females? They sought out masters to serve. If a male lost a challenge, his "partner" would instantly belong to the victor. If the victor refused, she'd have to challenge him directly in a joust. And if she lost, she would belong to him — body and soul — by law.
I emerged from the sea with my dragon features still out. The sun gleamed off my horns and tail as I stepped onto the island. Their massive structures made sense now — homes large enough to fit their enormous bodies. I moved through the village, my presence impossible to ignore. The centaur females turned, stared… their faces went red as they gazed at me. They were all beautiful. Thick, curvaceous, strong, exotic.
But the males? Ugly. Deformed. Their faces were full of lumps and bitterness. As more females approached me — some even introducing themselves and asking to be claimed — the males grew furious. Their hostility boiled over.
They tried to intimidate me.
Big mistake.
I transformed into my full dragon form. Towering. Dominating. My power roared across the island, silencing everything. The sky darkened as my aura swept over them. Then, with a grin, I shifted into a centaur form — but not just any centaur. My horse body was obsidian black, streaked with crimson. My human torso stood tall and powerful, carved muscle gleaming in the sun. A mane of dark fire flared behind me.
I spoke loud and clear.
"I'm going to take all the women in this village. Every single one. If any of you males have a problem with that, step forward."
They charged anyway, led by their chief.
It took me twenty seconds.
Twenty seconds to flatten every male, disarm and humiliate them, then stack them in a pathetic mountain of failure.
The females — young, adult, all of them — looked at me now with eyes full of devotion. Respect. Submission. Lust. They knew. I was their master. And they wanted to be mounted by me.
There were two special variants among them. Agility centaurs — slimmer, faster, graceful in a way that made their bodies perfect for speed and flexibility. And then there were the milk centaurs — full breasts, heavy and warm, needing to be milked regularly or they'd ache. They looked at me with throbbing need.
I had those ready to be mounted taken to a stable-like structure — each placed in a private compartment, naked, waiting. Those too young or not quite ready were left under the care of the youngest adults, who could be mounted in another year or two. As for the males — I banished every last one of them to the Okama Kingdom from One Piece.
The younger ones, the ones I couldn't yet mount — I gave them my special massage. My hands moved along their sensitive bodies, unlocking nerves they didn't even know they had. By the end, they were exhausted, flushed, lips parted in pleasure, and sent back to their homes to rest. But their eyes... their eyes were locked onto me. Waiting. Eager. Desperate for the day they'd be old enough to serve me properly.
Then, I entered the stables.
My village of beautiful, trembling centaur girls — all waiting for their turn. I activated the space-time barrier again. One by one, I mounted each one for twelve hours straight, filling their wombs with the next generation of perfect hybrid maids. The milk centaurs were especially fun — milking them while I was riding them made them lose control instantly, the dual stimulation overwhelming their senses until they passed out in bliss.
The next day, I selected one of the young dairy centaur girls — just a little younger than my current body's age — to act as my assistant on the island. I gave them tech and knowledge to enhance their agriculture. Their crops would grow strong. Their land would thrive.
Before leaving, I told them I'd return regularly. That they were mine now. And to keep training in case they ever had to defend the land.
Then I called my company. They dispatched the private plane, which had now been upgraded with a section for centaurs. I made a quick call to Meera too, letting her know about the island in case she ever needed a place to rest while traveling.
The Centaur girl I chose to serve me in my mansion is called Aiza, she is very obedient—well, they are all very obedient—and they let me dress them as I want. As she is a milk breed, she has bigger breasts than those of her own age and I put a bikini on her, a black top that barely covers her nipples. In my human form I ride her as we walk around town while waiting for my plane. They all get a little jealous of their master riding her and playing with her breasts. Of course, I stop to steal the lips of every centaur that looked too jealous and drink from the milk of the milk centaurs.
When I finish checking them all, my plane arrives with milk pumps for the milk centaurs to use and for the others as well when their pregnancies develop further. Aiza, the pilot, and the stewardess help me deliver the pumps before we leave.
On the flight, I make sure to physically and monetarily reward the stewardess and, when we arrive on the ground, it's the same for the pilot.
Then one of my drivers picks us up and takes us to my mansion. Once there, I find a room for Aiza that meets all her needs: a place to sleep, a private bathroom, a place to be mounted, furniture to leave her things, and the area to be milked.
I let her settle in while I order one of the few maids of the mansion to bring food for Aiza. I also tell Aiza that when we are in family, she has to stay naked. If visitors come or she wants to go out, that's when she can wear clothes. She agrees and undresses. Taking advantage that she is ready, I take a snack from her lactating breasts.
Haaa... How great is this world.
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