"Greetings, new trainers! I'm your guide, Hayakawa Tazuna. Welcome to the warm, friendly family here at Tracen Academy. Please line up neatly and follow closely behind me as we tour the campus—and be sure not to wander off~!"

At the entrance to Tracen Academy stood an attractive young woman in a green uniform, topped with a green hat. Her cheerful, charming demeanor immediately caused several male trainers in the group to skip a heartbeat.

"Oh-hoo..." Several male trainers emitted odd sounds, eyes blankly fixed on Hayakawa Tazuna.

In Japan, openly staring at a woman in such a blatantly obvious way would normally be considered incredibly rude—grounds for dialing emergency services, especially on public transport.

But Tazuna seemed entirely unfazed, her practiced smile never faltering as she lifted a small flag and led the new trainers onto campus.

Today was the official enrollment day for new trainers at Tracen Academy—Japan's largest and most prestigious school for Uma Musume.

Due to certain special circumstances, among the dozen or so new trainers, the majority were female, with only a few men sprinkled in.

On such an important occasion, every new trainer had made careful preparations. The women were stylish and elegant, the men polished and handsome—all determined to make a strong impression on their future colleagues and the Uma Musume students.

Yet among the neatly dressed crowd, one individual stood out starkly.

He wore a dark grey trench coat, a large hood pulled over his head, under which was an additional black hat. Coupled with a collar so high it reached his nose, he formed a zone of impenetrable darkness, completely concealing his face.

Beneath the grey coat, he wore a white overcoat reminiscent of a scientist's lab coat. Black gloves covered his hands, tall black boots enveloped his feet—not an inch of skin was visible.

But even dressed in such an eccentric manner, not a single person around him reacted—as if he didn't exist at all.

[Doctor's Outfit]

Description: Borrowed from a certain Doctor. Wearing it suppresses your natural traits.

Abilities: Conceals appearance, neutralizes scent, alters voice, drastically reduces presence.

"So this is Tracen Academy, huh..."

The black-clad figure muttered to himself, hands tucked into pockets, voice ambiguous and impossible to place as male or female.

This was Mizuno Sora, a traveler between worlds—and a newly arrived trainer.

Just ten minutes prior, he'd awoken in this world, sitting in a taxi whose destination was already set for Tracen Academy.

Mizuno had simply stayed up late to finish watching Uma Musume Season 3, drifting off to sleep in contented bliss. When he reopened his eyes, he inexplicably found himself trapped in the backseat of a cab.

He'd tried to get out, but the driver ignored his pleas, the doors were locked tight, and a partition prevented him from reaching the driver. He'd been effectively imprisoned and forcibly transported to what now felt like a prison awaiting his arrival.

At the time, Mizuno hadn't been wearing the Doctor's Outfit, just normal casual clothes. He'd glimpsed his reflection in the rearview mirror and saw his appearance unchanged, leading him to initially think he was still in his original world and had simply been kidnapped.

But then he discovered a phone in his pocket with the official Tracen forum app, plus a trainer ID card from Tracen Academy. Combined with the occasional sighting of girls with horse ears and tails strolling past the taxi, Mizuno realized he'd crossed over into the world of Uma Musume.

Additionally, a strange system had appeared in his mind.

---

[Personal Information]

Name: Mizuno Sora

Gender: Male

Special Traits:

Appearance S-tier (Uma Musume)

Voice S-tier (Uma Musume)

Scent S-tier (Uma Musume)

Assessment:

Literally catnip for Uma Musume. Strongly advised to avoid all Uma Musume at any cost.

[Inventory]

Doctor's Outfit x1 (Limited duration: 1 day)

Random Uma Musume Recruitment Ticket x1 (Choose 1 from 3)

Delicious Carrots (1 Box)

[Main Quest]

Quest 1: Join Tracen Academy and become the trainer of an Uma Musume.

Reward: Doctor's Outfit extended for one week

Penalty: None

[Warning]: The System is not a system! (Text deleted after 0.5 seconds)

Please trust the system!

---

Mizuno Sora spent a full minute reorganizing his thoughts.

Personal Info, Inventory, Missions...

"I get it. Totally clear now." Mizuno sighed deeply.

Though the system hadn't explicitly spelled it out, given his [S-tier Uma Musume Attraction] status and the protective outfit in his inventory, Mizuno now knew exactly what he had to do.

With utmost calmness, he retrieved the Doctor's Outfit from his inventory and quickly donned it.

Uma Musume—a massively popular IP in his previous world.

Legendary racehorses of history had been reimagined as beautiful anime girls known as Uma Musume, blessed by three goddesses and joyously competing on racetracks.

Naturally, the presence of countless cute girls had led to great popularity among fans—but also the emergence of many strange fanfics.

Basements, horse rides, Trep...

In such fanfics, Uma Musume were portrayed as beings of intensely pure emotions, especially in matters of love. Given their vastly superior physical abilities, getting targeted by one inevitably ended in tragedy—dragged into a basement, ridden until your pelvis shattered.

If Mizuno's guess was correct, he'd landed in precisely such a cursed fanfiction world.

Given his catnip-tier attraction for Uma Musume, being dragged to a basement would surely end in certain death—and probably total skeletal destruction.

His sole means of protection was this Doctor's Outfit, capable of masking his deadly allure. But it was only effective for one day.

Escape was impossible—Mizuno had no money, no familiarity with the place, and running off into some remote village might still leave him at the mercy of an Uma Musume. If caught there, calling for help would be impossible.

So Mizuno had only two realistic options:

Either keep the Doctor's Outfit on and complete the mission as a trainer or lose the outfit's protection after a day and suffer a grisly basement fate...

While Mizuno had once fantasized about being the king of a harem, enduring battles of jealousy from numerous beautiful girls, being literally torn apart by horses wasn't exactly his ideal outcome.

Just as Mizuno was lost in contemplation, the car finally came to a halt.

"We've arrived at your destination. Please step out," said the driver who had been silent throughout the trip.

Turning his head, Mizuno saw Tracen Academy looming right before him.

The den of monsters awaited.

So if I don't step out, survival isn't an option, huh...?

Mizuno swallowed nervously before mustering the courage to open the door.

"Then come at me, I guess."

Mizuno's foot moved toward the pavement.

But just as he poked his head out of the cab, Mizuno caught sight of a man climbing frantically from a window of a nearby academy building.

The man wore a trainer's uniform—clearly a senior trainer—but his face was pale, eyes wild with horror, as if drained by days of ceaseless torment. Desperately, he waved a blood-stained cardboard sign with two starkly written words:

[RUN AWAY!]

Before Mizuno could react, an invisible force violently yanked the senior trainer back inside, leaving only the man's terrified, despairing face burned into Mizuno's memory.

Mizuno's foot halted mid-step.

Help. What if I proposed to the taxi driver right now and begged him to drive me far, far away...?