A world where Isaac is the only "true" male.

(Author's Note: The general themes this branch is going for, besides reality warping and massive harem action, are bisexuality and the occasional male/male content (main character always pitches, never catches), hyper/disproportionate endowments, size difference, and some species play. Make an informed decision as to whether you want to continue reading.)

In fact, this whole business with his off-putting pheromones gave Isaac a key point of inspiration, and his active and highly detailed imagination spiraled out from there. Why not turn a difficulty modifier into a cheat code?

Isaac, feigning uncertainty, sighed and ran a hand through his hair. "Actually... I'm not sure that theory totally lines up with what I've observed."

Celestia blinked, her mouth forming a slight 'o' of surprise. "Is that so? I've been extrapolating from Twilight's reports, but I suppose I haven't walked a mile in your shoes. Do you think your difficulties making connections with ponies have a different source?"

The human's heart raced with excitement at what he was about to attempt, like he was on the precipice of a bungee jump. "Wellllll... I think it might be close, but the actual reasons behind it... I've had little to do over the past month but pony-watch, and I've noticed a few things that I'd like to confirm with you. You don't mind if I ask some questions about pony sexuality, do you? You don't mind if I get crass, right?"

The tall, imposing alicorn Princess blushed, a slight smile curling at the sides of her muzzle. "I certainly don't mind getting a little 'crass' myself in private, as my close friends know. Feel free to speak candidly here; it's just us. Though I admit, I'm not sure where you're going with this..."

Hell yeah. Now, how to word this properly... "Well, you implied before that this world has far more of a feminine tilt than mine. That applies to the males, too, I think. Every native male of this world is bisexual, and either a bottom-heavy femboy, a muscular powerbottom, or a natural cuckold who wants a more capable male to take what he loves - or some combination of all three. None of them really ever want to be on top; their own cocks, no matter the size, might as well be decorative outside of **** procreation. And that's if they don't elect to be magically transformed into a pure female anyway, which many do comfortably. Doesn't that apply to every sapient male in this world except me?"

As Isaac's hurried spiel went on, Celestia's face grew more skeptical, and her mouth opened to prepare a rebuttal to his absurd, perverted evaluation. But the moment Isaac's question rang out in the vast throne room, her mouth closed again contritely, her face flushed with slight embarrassment. "Well..."

Across the world, the very nature of masculinity changed, affecting all existing males with it.

Spike, Twilight Sparkle's dragon assistant, growing into a well-built drake that was ready to catch the eye of many a mare, instantly became a slender, dainty, feminine drake with an absolutely enormous, plump rear that he loved to sway as he walked.

Big Macintosh, Applejack's big brother, suddenly owned multiple dildos in his closet that he practiced on nightly when his sisters were asleep, fantasizing about using his powerful body from working in the fields to blow a male's mind.

Mr. Carrot Cake, loving husband to Mrs. Cup Cake, now had an intense fetish to have a randy male take his wife right in front of him while he jerked his own long, floppy horsecock uselessly. They had yet to find a suitable candidate, of course, but Mrs. Cake was 100% supportive of her husband's desires and loved to work him up by teasing him about it.

Shining Armor, Prince Consort to Princess Cadance of the Crystal Empire, had now long ago made the transition to Gleaming Shield. And even then, she still wanted nothing more than for a worthy male to barge into their marriage and claim his wife before claiming her. She felt insanely lucky that Cadance was generous enough to occasionally conjure a magical strap-on and fuck her silly.

This effect wasn't limited to ponies, either. Thanks to his wording, every male of every sapient and intelligent species, from zebras to dragons to griffons to hippogriffs to yaks and beyond, now fit into this perverted template.

Even the supervillains of the past weren't exempt. Discord had long since given into the desire to rebrand as Eris, Goddess of Chaos. King Sombra's desire to conquer the Crystal Empire and beyond was all bravado, undermined by his even deeper desire to have it all taken away from him by a more capable male, as though he'd delivered the world on a silver platter, before having his fat umbral ass plowed. Lord Tirek had a powerful body and no one worthy to service it with, and had thus decided that he'd try to become the one worthy male, which ended in futility.

With a reckless description and a single question to confirm it, Isaac had effortlessly rewritten a fundamental truth of reality.

Celestia wrung her hands at her waist. "...I wouldn't say that's inaccurate."

Isaac smirked, betraying a little of his true excitement in the moment. "Which means that the females of this world have had to adapt, becoming bisexual with a female tilt as well, but still craving a 'real' male to get on top. Isn't that right?"

The alicorn before him took a deep breath before fixing him with a curious look. "How in the world could you gain all this insight just from 'pony-watching'? You haven't been spying on my ponies in their intimate moments, have you?" she said with a serious edge to her tone.

Isaac put his hands up defensively. It seemed as though having a reality-warping power didn't necessarily make him immune to trouble. "I didn't spy on anyone, I swear. It's just kind of obvious in retrospect looking at ponies and the relationships they've formed. You believe me, right?"

Celestia's harsh posture relaxed a bit, though she still looked a little embarrassed. "...I'll admit, it's a trial to have our planet's sexual woes spelled out so explicitly, by an alien who just arrived, no less. But what are you getting at, Isaac?"

"I'm getting at my theory about pheromones and why mares have been distant," Isaac replied earnestly, pointing up at Celestia. With the groundwork laid, it was time for the pièce de résistance. "Isn't it true, then, that the sapient females of this world aren't put off by my alien pheromones, but actually subconsciously attracted to me and aroused by my pheromones and musk, because I'm a 'true' male, a 'real' male, a 'pure' male, uncompromised by this world's overwhelming natural femininity and submissiveness?"

Isaac had to take a small breath after that. The sentence just kept running as more details to add sprang to mind mid-spiel. But watching Celestia's reaction made it all worth it.

The tall alicorn before him looked fully flushed in the face now, looking down at him with thinly veiled desire, nostrils flaring as she took another whiff of his now arousing masculine scent. Her hips unconsciously rolled from side to side trying to work out the dampness building up in her loins, and the top of her dress looked a little more pointed as her nipples pushed back against the intricate brassier beneath her robes.

"That's... quite an interesting theory... Isaac," Celestia murmured, her sweet, tender voice gaining a raspy, needy layer to it. "It would... certainly explain why ponies have been awkward around you, as they grapple with feelings they've never felt before..."

Isaac grinned triumphantly. Jackpot. And he was only getting started.