Setting up the bug trap.

After retrieving a large, fluffy bathrobe and sandals with which to remain somewhat comfy and modest as they traveled through the royal palace, Celestia - still heavily bloated with cum but enjoying the feeling of it all sloshing around in her stomach and womb - led Isaac down into the dungeons beneath the palace.

"We don't usually hold anyone here for long. Most **** offenders who threaten all the land are banished to Tartarus. But Chrysalis is a bit of a special case. The gates of Tartarus block all magic, but Chrysalis feeds magically on love. It would therefore be unethical to effectively sentence her to ****, so we are looking for other solutions."

The dungeons weren't quite the medieval stone-and-iron-and-torches affair that Isaac was expecting, but they were pretty close. The stones were cut cleaner, and there was adequate furnishing, lighting, and ventilation to keep things relatively comfortable. Somewhere between a modern jail block and a medieval dungeon, this place resided. He also noticed that many of the stones were made out of a glittering material, perhaps as some kind of anti-magic warding.

As they reached the main gate to the holding cells flanked by two royal guards, Celestia stopped and turned to Isaac, not caring that her hyper-endowed body was jiggling and swaying with every motion like it was nothing. "Now, just keep in mind, I'm not holding you to high expectations here. We're not sure how she will react to you. What we do know is that she'll use every manipulative psychological trick in her arsenal to undermine you in any way that benefits her. Remember, Chrysalis has been around for almost as long as I have. You are in your mid-twenties by comparison. Do not underestimate the experience gap."

Isaac nodded solemnly. "What do you think we're going to accomplish today?" he asked carefully.

Celestia smirked, placing her hands on her swollen belly. "I'm going to warm her up by showing her that I've finally been filled by a real male, and then I'll give you two some one-on-one time for you to introduce yourself. Showing her that a Harem Master candidate has finally arrived might plant the seed of an idea in her mind that she doesn't have to continue living this way, that she doesn't have to stay on the course of misery. That might be all we realistically accomplish today, but it will be significant. I'll be back shortly." With that, she gestured for the guards to open the gate for her, and she disappeared down the steps into the cell block below, her glowing mane lighting up the walls around her.

Which left Isaac a few precious minutes all on his own to stack the deck in his favor. Well, alone save for the two guards, which he turned away from to face the wall as he muttered to himself. Sure, abusing his power to pre-ordain this encounter wasn't exactly playing fair, but Celestia had made the case herself wonderfully: He was up against a cunning creature over a thousand years old; he had no reason not to pull out all the stops!

"After a few minutes of us talking, will Queen Chrysalis slowly deduce that I must have some kind of reality-altering power that I've used to get myself into this position of privilege and transform the world to my perverted whims? Will she find that realization extremely hot and arousing and humbling far beyond anything she's ever experienced? Will she get off on my total domination of all other creatures without them realizing and the fact that I can rewrite anyone I want at will, even her? Will she eventually come to see me as an all-powerful god and worship me with total devotion? Will everyone else in this world completely write off whatever she says about me and my power as mere delusional fantasy? Will she never fully realize how my power works, but still be extremely aroused at the fact that even she's not immune to it? Will she never try to hurt or betray me, or manipulate me into using my power against me to undermine me, only ideas that she thinks I would find hot?"

"Uh... Do you need something?" one of the guards asked, slightly confused at how Isaac had been muttering to himself against the wall for a good couple of minutes.

The human caught his breath and turned around with a sheepish grin. "No no, I'm good, thank you!" His heart was racing a little and his hands were a bit jittery from nervousness. He had no idea if these questions would truly work the way he thought they would until he actually met Chrysalis, after all. But if they worked out... Hell, at the very least, if they worked half as well as he hoped, they'd give him some insurance.

"Your turn, Isaac~!" Celestia called as she climbed back up the stairs.

Isaac ran a hand through his hair and tugged his bathrobe straight. Showtime.

It was the cell at the end of the hall, he couldn't miss it. Still, the fact that there were no other occupants in any of the other dungeon cells gave the short trip a sense of rising trepidation as he slowly approached his destination. The final cell was large and reinforced for a very dangerous prisoner, with a thick panel of sparkling magical glass between the hall and the cell.

As soon as he got in range to see into the cell, however, he was immediately jump-scared by a naked pink earth pony mare slamming herself desperately against the class, clawing against the hardened material. "PLEASE!" she begged, her voice muffled by the wall between them. "There's been some kind of mistake! I don't know why they're keeping me here! I haven't seen my family in days; I've barely eaten or slept! Please! Ple-he-he-hease...!"

Isaac flinched back, finding the display hard to watch. "Geez... Hell of a way to make a first impression."

The pink mare's sobbing gave way to cackling laughter as her eyes turned green and slitted and her mouth grew fangs. A wave of sickly green flame washed over her body, and suddenly Isaac was looking in on a much taller insect-like creature of black chitin in the shape of a woman. Her arms and legs had conspicuous holes in them that went all the way through, as did her wings and long, greasy mane. She wore little more than rags around her chest and hips, and she wasn't particularly well-endowed, far more tall than wide.

Still laughing, Chrysalis pressed her face against the glass with wicked glee. "Oh, thank you for giving me a chance to do that. All the other guards are already used to it, so they don't react so purely as you did. Mmm, I can feel how your heart went out for that **** mare that didn't exist, hahaha! Males are all the same~..."

Isaac took a deep breath to try and steady himself. Damn if he hadn't been warned, but he was still starting to have second thoughts about recruiting her. He could tell just in her posture and tone that she was truly ruthless, dangerous, and unscrupulous. And yet, the rewards of being able to tame her...

Chrysalis took a moment to inspect him. "So, Celestia wasn't lying - she found some kind of new beast to satisfy her cum addiction. What are you supposed to be, whelp?"

"A human from another world," Isaac said simply. "My name's Isaac."

"I'll remember to put that on the ransom note," Chrysalis teased, narrowing her eyes and grinning at him. "Let me guess: You think you're going to be the lucky male who'll inherit the title of Harem Master of the World, hmm? Pfaahahaha!" She threw her head back and cackled, her fangs gleaming in the light of the cell. "A whole planet of FOOLS, ridiculous as ever. Praying for a myth to come true so that they can justify their natural, self-righteous sense of submission!" Her mood switched in an instant, and she pounded a fist on the glass. "If you think you're going to conquer Equestria before ME, you've got another thing coming."

Isaac tried not to smirk. He knew he had all the cards in this situation, but he didn't want to tip his hand just yet. "What's your take on the whole Harem Master thing? I must admit, I'm curious now."

Chrysalis made a point of inspecting her long, sharp nails. "At the end of the day, creatures just want to be told what to do. They're glorified house-pets playing at civilization." She then balled her hand into a fist and punched the glass again. "Yet they won't allow ME to give them the domination they deserve, instead building up this legend that no living being could possibly embody!"

"Aha...!" Isaac put a hand to his chin. "So your problem with the Harem Master concept is that you think he couldn't possibly exist?"

"I don't know how long your species lives for, but I've lived ten times beyond it, easily," Chrysalis growled, dragging her nails on the glass which refused to scratch. "I've been all over the world, seen empires rise and fall. No being in this reality or the next could ever hope to live up to all the requirements these ponies have convinced everybody to go along with. It's impossible! It's a collective delusion on a grand scale!"

"But if the 'real' Harem Master were to appear, you wouldn't have a problem with him, right?"

Chrysalis faltered, her mouth hanging in confusion, the fire in her eyes fading for a moment. "Wha..." Then it was back full ****. "You're just as delusional as they are! You really think YOU are going to be the Harem Master? Do you even know what happened to the ones BEFORE you?"

That gave Isaac pause. He lowered his hands. "What?"

The fey changeling queen grinned at having clawed back some control over the conversation. "Awww, your precious pony friends were too cock-hungry to tell you about them~? Oh, honey, dearie, they've tried plenty of times to cultivate and manifest their glorious Master. ALL of them ended in failure. Let me tell you the gloriously tragic tale of the very first candidate...!"

Long ago, there was a group of legendary ponies called the Pillars of Equestria. There were three mares and three stallions between them, at least at first. Starswirl, the leader of the group, was the first one to figure out how to use magic to turn himself into a mare permanently. Shame, too, because his beard was reportedly quite legendary. Flash Magnus was an absolute femcolt of a pegasus who frequently had the entire Royal Legion of Cloudsdale 'train their stamina' by fucking his ass, and when that wasn't enough, there were rumors he went to the dragon lands to drain them dry, too.

But then there was Rockhoof. Ohhh, Rockhoof~. An absolute giant of a stallion, built up through sheer determination and **** of will. A cock that could plow stone, too, from what I heard. If any stallion was ever going to have a shot at becoming Harem Master, it was him. No other stallion in history has ever come close.

And Rockhoof, well, he was the kind of good stallion that couldn't say no, even to something impossible. He'd challenged a volcano and won, after all. Surely with pure determination and heart, he could step up to the challenge of being the world's stud!

Things started promising enough. The Princesses introduced him with a royal festival. Some ponies even got Branded with his Master Mark. He left well-fucked pony after well-fucked pony in his wake, and all of Equestria was rejoicing.

I'm sure you can guess what was really going on behind the scenes, though. Rockhoof... he couldn't take it. Always being on top, never being able to bottom... It was **** for the poor mountain of a stallion. I heard it got so bad that he couldn't cum, going around begging for somepony, anypony, to put a cock in his mouth so he could finally enjoy release in submission!

When word finally got out that Rockhoof was stepping down from the position, hearts all across Equestria broke. The Master Marks on his prospective slaves vanished the moment he renounced his worthiness. A completely self-inflicted wound to all of ponykind from which they have never recovered, hahahahaha!

_- - - - - -

_"So you see?" Chrysalis wrapped up, staring back at Isaac with a manic look in her eyes. "Even the greatest so-called Harem Masters are doomed to failure. And Rockhoof wasn't their last attempt either. I've heard Celestia's tried males and stallions from alternate universes, too, once every few centuries, all rejected for one reason or another. Not enough sex drive. Too kind to be dominant. Cracked under the pressure. Too evil to treat his slaves well. When YOU finally fail, Isaac, I wonder what footnote they'll mark down for you before sweeping you under the rug of history~?" Once more, she threw her head back and cackled. "Gyahahahahahaaa!"

Isaac took this all in as calmly as he could. But his poker face could only hold up for so long. Once Chrysalis started laughing, Isaac... sputtered and started laughing himself! He doubled over, hands on his knees, as he nearly lost his breath laughing his ass off.

Chrysalis stopped her own laughter and glared at him, baring a fang. "What's so funny? Are you too stupid to comprehend what I'm telling you? Is it all flying over your head?"

"Hoo... Man, sorry, that just really got to me," Isaac said, standing up straight and thumping his chest. "That whole story about a big, muscular stallion turning out to be a total sub... I thought I was mostly straight when this whole escapade started, but man, what I wouldn't give to go back in time and have him blow me, heh heh!"

"Wh-What...?" Chrysalis breathed, taken completely off-guard by his reaction.

"I mean, look at how hard that story got me!" Isaac bragged, reaching down to part the layers of his bathrobe and reveal the thick cock hanging between his legs. He picked it up and thumped the tip against the glass.

Chrysalis hissed and backed away a few steps, her eyes locked onto his tool. "How...?! How are you so- This must be a trick! No one's that... that...!"

"I am that big," Isaac asserted with a lustful grin. "Guess I'm just built different. And getting bigger by the day, it seems. This world's really taking a liking to me. It's been excellent for my health. And oh man, being surrounded by busty girls and subby guys who all want to please me, all talking about the Harem Master I'm going to be... God, I hope I never get used to it."

Chrysalis's eyes shrank down to near pinpricks as a dawning realization made her whole worldview collapse in on her. "You... You're... You've...!"

Isaac bounced his eyebrows at her, smirking. "I'm whaaat?" he asked slowly and carefully.

The bug-woman hissed, her long snake-like tongue vibrating at him, and she scrambled back to the far side of the cell. "Get away from me! Don't come near me! Guards! GUARDS!"

Isaac shook his head and tucked his cock back beneath the folds of his bathrobe. "And that's my cue. It's been nice meeting you, 'Queen' Chrysalis. Hope to talk with you some more another time." And he walked away promptly with the biggest, smuggest smile on his face.

When he climbed up the steps to the dungeon entrance, Celestia looked down at him with a small amount of worry and concern. "We heard shouting. Are you alright? She didn't rattle you too hard, did she?"

"Oh, I'm fine," Isaac reassured her. Though he realized after a moment that he was a little sweaty from how nervous he'd been going into that. "I think I just gave her some things to think about. You're right; she just might come around!"

Minutes later, Chrysalis was huddled up in one corner of the cell, staring off into space... and unable to stop herself from toying with her puffy pussy lips.

"A man like that... If he found something, he could've... All of this would just be... It would explain everything...!"

One finger slipped into her cunt, then another.

"Nnngh... He's taking over Equestria right now, and those braindead Princesses don't even know it... No, they're going to let him! Giving him all of Equestria and the whole world on a silver platter! They're happy to do it, because he... he...!"

Chryalis slowly slouched down onto her back, her hips raised and bucking against now both hands playing with her pussy.

"He fucked their minds! Their history! Their beliefs! All warped around his... his juvenile perverted fantasies! They believe in a Harem Master so bad because... because... Oh fuck! I wanna believe it too! He already fucked my mind! He could've changed me before he even got here. He could've while he was talking to me and I didn't even notice...! Uhhhnnn-!"

Juices started spraying out of her twitching pussy, staining the stone bricks in front of her. And worst of all, the more she thought about it, the more her orgasm refused to stop.

"I-ISAAAAAAC!!"