Celestia's Blessing (Patreon)

Twilight and Rainbow Dash struggled up the steep incline of a snaking mountain path. Ponyville was far below them, so small that it felt like Twilight could reach out and hold it in the palm of her hand, and yet the path continued inexorably upwards, as if meaning to make them touch the sky itself. The start of the ascent had been chatty and easy, but now, after several hours of struggling, the two ponies had settled into a determined rhythm.

Dashie took point, leading them along a rounded crevice as they approached a waterfall. Below, past the nose-bleed drop into empty air, the frothing waters raged, forming a wild river that looked apt to crush any boats that so much as went near it. It was a tantalizing sight, a testament to the raw power of the mountain they climbed. So tantalizing, in fact, that the speedy pony made a wrong step and lost her balance at the very edge of the mile-tall drop.

Twilight shot forward and grabbed her arm. “Hey, careful!” she called, reeling her friend back in.

“Shit!” Dashie cried, her heart jumping in her chest as she stumbled back against Twilight. “Uh. Thanks. Just… Seeing the sights.” Yeah, that was a bad save. She knew it too and gave up trying to pretend. “Fuck. This is bullshit. Why can’t we just fly?”

Twilight rolled her eyes. There was a distinct lack of wings on her back.

“Fine. Well, why can’t I?”

“The journey is the point. You have to show your devotion, that sort of stuff.”

“I can show that I have wings. That beats devotion any day of the week.”

Twilight crossed her arms. “Listen, you want Celestia’s blessing or not? You didn’t have to come, you know.”

“Sure I did. Or you’d stumble over a branch and break your, well, everything.” Dashie shrugged. “Fine. Fiiine. We’ll walk.”

Twilight had a glimpse over the edge, admiring the landscape again. “If you’re sure you don’t need a rest.”

“I’m fine, I told you!” Dashie said. She happened to glance upwards; the summit was still so very far away. She sighed. “Well, okay. We can sit here for a moment, since you’re twisting my arm. But I’m telling you, flying would make this a piece of cake.”

Twilight smiled. “Celestia says otherwise. And we better do as she says.”

***

It took forever to reach the top. At times, it felt like the road grew longer as they hiked along it, the features above them shifting out of reach. But there was nothing that Friendship and Perseverance could not conquer, after all, and Twilight and Rainbow Dash reached their goal in the end.

It was an awesome sight. The whole of the world, it seemed, stretching out on all sides around them. Twilight had expected it to grow colder as they ascended, but in fact the air was positively tropical. Steam rose around their path and the air was filled with pleasant floral scents. Flowers and… something else, something stronger, waiting just underneath. It sent tingles down her spine, building her anticipation of meeting her mentor.

“So?” Dashie said, already fidgeting with nervous energy. “Is she gonna appear? Don’t tell me we hiked that long for nothing!”

Twilight waved her hands at Dashie and shook her head, hoping fervently to avoid a faux pas against Celestia. “Dashie, just chill.”

The mountain rumbled beneath their hooves. Rumbled… and grew.

“Ah,” Celestia’s voice boomed across the valley, addressing them from the very land itself. Which, as Twilight and Dashie watched, rose out of the ground, her flawless form so large that it took a moment to even realize. That pair of mountains weren’t mountains at all; they were Celestia’s breasts, big and full. And the mountain that they stood on, well. That was her sheath.

Celestia sat up, smiling brilliantly as her face filled the sky over Twilight and Dashie; the latter of which was not far too busy staring in awe to make awkward comments.

“If it isn’t my favorite student,” the giga-giantess continued in her deep, melodic voice, fixing the purple ponies with eyes that dwarfed Ponyville itself. “Twilight. How nice of you to visit.”

As she spoke, her body shifted and grew, as if unable to stop itself from expanding with every single moment of her waking existence. Her breasts filled out, pink nipples looking to rival mountains by themselves, and her already outrageously fat package swelled under her two devotees, her eternal river of precum flaring up to a thunderous surge as her miles of balls bloated far below, drowning Ponyville in her musk as a gentle warning before the flood of cum would engulf the valley.

Twilight found herself awestruck, as she so often did when conversing with her goddess of a mentor. “Hi Celestia,” she said and immediately bit her lip.

Just acknowledging the Princess was enough to make her power grow, their perch on her sheath rising miles into the air as it fattened between her legs and her ass drove deeper craters into the rock that sunk under her weight. The world was unprepared to deal with a pony as potent as Celestia—if not for her magic, it would have ended long ago. Or maybe it had, already, and she simply put it back into place.

Celestia smiled knowingly. She had to know the effect she had on people, Twilight decided, the effect she had on her. Twilight was her student, more than passingly familiar, and even she could not stop herself from gawking. There was no point in trying to restrain herself. Twilight had tried that before; it led to a feedback loop of temptation that just made the towering Celestia grow even faster.

“You’ve brought a friend,” Celestia remarked, turning her smile to Dashie. “I’m pleased. The more who partakes, the better.”

“Y-yes!” Twilight said quickly, trying to keep her thoughts straight. “We’re here to learn!”

Dashie squirmed in place, growing hot and bothered under the goddess’ gaze. “Twi?” she called, breaking out in sweat as her hands went between her legs of their own accord. “What’s… happening?”

Celestia laughed, a surprisingly gentle sound considering its source and the way it rebounded off distant mountaintops. “Learn? Nonsense, dear student.”

Dashie cried out in pleasure as a fat marecock sprang out from her crotch, the size of her leg and counting… “F-fuck!”

Twilight felt it too. Her breasts swelled, her ass fattened, her whole body rose as one enormous cock pushed out of her brand new sheath; two cocks, three, foot after foot of thickening, throbbing fuckmeat rising into the cloud of musky steam before her. “Oh, sweet Celestia…”

The goddess’ grin captured them both. “You’re not here to learn, little ponies. You’re here to grow.”