Successor Assistance

“D…don’t stop!” Celestia wailed, driven forward and back atop her bed.

Cadance thrust up and into Shining’s hand, practically screwing herself on his fingers, while she played with tits. “Mmmmmmm - Fuck!”

Shining grinned from ear to ear, plowing one mare while finger-fucking the other. “Don’t worry, I’m not stopping until you both get a heaping helping of foal-batter…”

Celesita peered down her chest at him, only barely able to see his face above her prodigious stomach and gargantuan bosoms, before she looked over at the mare beside her. Though Cadance had given birth some time ago, the girl had gotten knocked up as soon as she’d given birth to Flurry Heart. With the use of a bit of rather crafty magic, paired with her insatiable diet, she’d grown to nearly as big as her mentor.

Her due date had come and gone nearly a month prior, yet she’d continued to gradually get bigger and bigger. Maybe her advanced age had something to do with her pregnancy, or perhaps her subconscious love of being heavy with foals had delayed her delivery - regardless of the root cause, she’d gotten so large that she’d spent the last two weeks in a custom-built cabin on the fringes of the Everfree forest. Her temporary residence was a bit inconvenient, not to mention away from her adoring public, but she wasn’t there alone.

Shining and Cadance had accompanied her, swearing they’d stay by her side until she’d delivered her child into the world, and she was immeasurably grateful for their presence. Not only were the couple a course of comfort and contentment, but they were the best ponies on the planet to scratch her amorous itch. She planted her feet and lifted her waist ever so slightly, ensuring Shining’s medial ring demolished her g-spot while he pounded against her occupied womb, while she reflexively looked up at the mirror above the bed.

Each of her breasts was broader than her shoulders, her belly was so big that she could hardly walk without it scraping the ground, and her rump was as colossal as it was soft. She’d transcended from a curvaceous demigod alicorn to a paragon of maternity, eclipsing the title Cadance once held, and she’d be lying if she said she didn’t love every second of it. Gone was the bashful, self-conscious mare who avoided making scenes, replaced by the proud, self-assured Princess that motherhood had turned her into.

“Not gonna - Huff - last much longer,” Shining grunted, jackhammering into her and shaking her from her reverie.

“Wait!” Celestia bleated, bringing his motions to an abrupt halt. “Step back for a moment.”

Despite looking very confused by her request, he did as he was asked. As he shuffled back, unsheathing his slickened length from her depths, she shunted power into her horn and teleported herself directly on top of Cadance. With her abdomen and tits squished against her friend’s bust and belly, she smiled down at the mare.

“Tell me if I’m too heavy,” she whispered, adjusting herself and rearing into a kneeling position.

Cadance quickly figured out what was going on, shifting in place to ensure her sex was sandwiched against her host’s snatch. “You’re fine, but…” she trailed off, leaning over to peer at her husband, “we could use a bit of stallion meat.”

The sight of two exquisitely gravid mares pressed together, each expectantly watching him and praying for his affection, proved too much for him to bear. Stepping forward, holding the base of his shaft, he guided his stallionhood between their marehoods. Though he wasn’t penetrating either of them, his cock glided against their clits and caused them both to moan. There weren’t many ways for a guy to get off two girls at the same time, but be darned if this wasn’t one of the best ways to do it.

“You mares ready?” he inquired, lovingly rubbing and squeezing Celestia’s backside and Cadance’s thigh.

“Mmmmhmmm,” the Princesses groaned in unison.

Like a lightning strike, Celestia was stricken by a wave of pleasure when he started slowly thrusting. She adored being filled with a big, thick cock, yet the clitoral stimulation would be more than enough to get her off - that and she had other ways to heighten her bliss. Listing to one side, she lifted one of Cadance’s titanic tits toward her face, leaned forward, and hungrily began to suckle around her friend’s nipple.

Fighting through her bliss, Cadance recovered from the surprise attack and countered. Mirroring the older Princess’ movement, she leaned to the side, lifted her head, and latched to one of Celestia’s enormous udders. As she mutely whimpered around the bud of flesh, gulping down mouthful after mouthful of rich, nutritious milk, her eyelids fluttered.

The pair feasted on one another while the stud - their stud pistoned his length between their needy pussies. The stimulation to their marehoods while simultaneously having their teats nursed upon was simply incredible, creating a rivalry of sorts. While it didn’t matter which one of them peaked first, there was a certain pride to be taken from outlasting each other.

Like an absolute machine, Shining did everything he could to get the pair of alicorns off. Aside from simply thrusting, he used his magic to up the ante. Sorcerously twisting their unmolested breasts, caressing them all over, and even ticking their g-spots with his aura - nothing was beyond them. Though they may have entered some sort of unspoken competition, he was determined to make them both climax before he did.

Moving faster and faster, whipping themselves into a frenzy, the trio lost themselves to the exchange. Celestia and Cadance bucked their hips, grinding themselves against his pistoning shaft, while each suckled on the other’s tit. It was a scene of pure degeneracy, though they genuinely did care for each other. As they reached a fevered pitch, each having been reduced to a bestial shadow of their normal selves, they began to fall like dominoes.

Celestia climaxed first, baptizing Cadance’s groin, thighs, the bed, and Shining’s entire lower half in her nectar. Milk geysered from her tits, all but drowning the mare beneath her and showering over the mattress. Her marehood convulsed and seized upon itself, as she collapsed atop the young Princess.

A split second after Celestia came, Cadance followed suit. Howling to the heavens, she unwittingly unleashed a cascade of her sensual energy throughout the chamber. Much like her host, she gushed sweltering, orgasmic juices onto her husband and the sheets beneath her. With her toes curling, trembling from head to foot, she was joined moments later by her betrothed.

Try as he might, Shining couldn’t stop himself from slipping past the brink. The physical pleasure had been hard enough to endure, but the carnal energies that swept over and through him did him in in an instant. Driving his hips forward as far as he could, he blew his load and painted the two mares’ bellies with his hot, sticky jizz. His legs quaked uncontrollably, leaving him to crumple forward and hug Celestia’s immense ass.

The three lay all but motionless, heaving air into their chests and slipping into a blissful euphoria. It was a wonder that the bedframe could support them all, not for the least of which reasons being Celestia and Cadance’s tremendous girth, but it managed to hold. Grinning like a trio of idiots, their mirth blossomed from a small giggle into a heartfelt laugh.

“Hey,” Celestia quietly began, peering over to the window, “you two wanna try something different?”

Cadance and Shining looked to one another before focusing on their rotund host. “Like what?”

“Maybe we fool around under the stars tonight,” Celestia continued, rocking back into a kneeling position.

Wriggling backward and up the mattress, Cadance nodded. “I’m game ~ how about you, Shining?”

“Sure,” he replied, giving a small shrug, “after we get cleaned up. I’d rather not let my coat get all crusty again…”

Celestia couldn’t have been happier with the way things had played out. She’d soon have the foals she so desperately desired, her bond with the royal couple was stronger than it had ever been, and she’d gotten something that she never knew she needed - a family. Though she loved Luna with all her heart, Shining and Cadance were as much a part of her life as the filly or colt growing within her - making them all but inseparable. Twisting to the side, throwing one arm around the pair, she fought back a joyful tear.

“I love you two,” she murmured, her voice fainter than a whisper.

The couple didn’t say a word, embracing her and returning her love. They’d be together for the rest of their days, even if they may occasionally spend time apart, and she was all the happier for it. For the rest of her days, she could never repay them for the gift and good times they’d given her, and she knew even better times would lay ahead of them…