Author's Note

WARNING, this episode contains: Thorax x Luna, Anal, and an Alicorn riding a changeling like a bull

Episode 1 - Celestial Advice

Thorax moaned as the alicorn on top of him sunk another inch towards the base of his shaft, the supple flesh of her backdoor squeezing around his member like a vice. “I d-don’t think it will fit!”

Luna looked down at him with a smirk, beads of sweat rolling across her fur as she sat speared on half of his—apparently above-average, even for a changeling his size—cock. “N-nonsense. Just need to work it a little, that’s all….”

The ceremony celebrating Thorax and his friend’s somewhat surprising defeat of Queen Chrysalis had gone quite smoothly. Truth be told, Thorax had been a little worried going into it—while the hive had been freed from the evil tyranny of their former leader, most of his fellow changelings were still a little rough around the edges when it came to social interactions with ponies. With just one slip of the tongue, one accidental asking of somepony to “come back to my chamber and exchange some love”—a phrase that apparently meant something completely different to ponies then changelings, as he had found out first-hoof when asking Starlight that very thing—and he was sure the princesses would banish the hive for good.

Surprisingly, though, the party had gone off without a hitch. In fact, the only real incident was when Princess Luna had tried to place the Pink Heart of Courage around his neck, the curving bones of his proud, new antlers too wide for it to fit. But a short, awkward moment was certainly better than a mass banishment of his entire hive, he supposed. The alicorn even laughed about it later, jokingly stating that she wondered if “other parts of him were just as big”. He didn’t have any idea what she meant at the time, but now he had a sneaking suspicion that the alicorn had, as Starlight had told him when he asked about ways ponies exchanged love, “flirted” with him.

Luna had continued “flirting” with him throughout the party, whispering sweet nothings into his ear or sensually brushing past him deep into the night. There were even times when her tail had accidentally lifted or swung to the side to show off the ebony lips of her marehood, though he wasn’t sure how “accidental” those moments really were. Still, it didn't take much for the Alicorn of the Night to whisk him away as the party wound down, and it took even less for her to toss him belly-up onto the bed. And now here they were, Luna straddling his waist as the velveteen walls of her backdoor sensually massaged most of his oversized shaft.

“Mmph, by my sister’s name….” Thorax winced in pleasure as Luna enveloped his balls in her magic, the warm, electric sensation making his round seed-silos churn with their unspent love. “If I had known changeling’s were so well endowed, I would have gone and kicked Chrysalis out myself!”

Another inch of his bright blue rod disappeared between the dark cheeks of the alicorn’s plot, the pouting pair of lips just north of their point of connection flashing him brief glimpses of her bright pink flesh. “Th-thanks, I think.” He shivered as the princess reached the three-quarters mark of his shaft, his antlers scratching against the headboard of the bed. “B-but, really, you don’t have to take it all!”

“Mmm... that sounds like a challenge!” The alicorn hummed as she let gravity pull her into his lap, the blunt head of his cock forcing its way deeper and deeper into her bowels. For a moment he thought it wouldn't work, that the size of his shaft and the tightness of her backdoor were simply not meant to be, but with a final, triumphant gasp Luna's ass finally pressed against the top of his sac.

The alicorn chuckled like a mad mare and began grinding her hips against his waist, almost as if she was using the hardened rod of his cock to forcibly stretch out the walls of her ass. “See? That wasn’t so bad!” She smiled and leaned forward, bracing herself against the headboard with her butt still planted firmly in his lap. “Now then, I think it’s time we give you a proper reward!”

Thorax didn’t have a chance to speak before the princess began lifting her hips, slowly extracting the pre-slickened length of his cock from her heavenly ass. Every inch of his shaft was subjected to the pleasurable power of the alicorn’s backdoor, the puffy ring of her anus hugging his flesh as it left her form. She paused with nothing but the tip still held between the moons of her ass, her ponut clenching around the hardened edges of his flare as if claiming him as her own. Already he could feel himself nearing the edge of climax, the constant magical ministrations against his balls practically milking them of their love—

And then Luna suddenly slammed her hips into his lap, driving the breath from his lungs as she took the entirety of his shaft with a resounding smack. Thorax tried to gasp or moan or shout but all he could do was stare between her legs as she picked herself back up, sliding the silky-soft skin of her backdoor across his shaft before slamming herself down again. Within the blink of an eye Luna had gone from slow and meticulous to hard and feral, leaving him unable to do nothing but clench his teeth as she rode him like a bull.

Several minutes passed, one driving herself up and down in the other’s lap like a mare in heat. The room filled with the sounds of their rutting, the constant slaps of ass meeting hips the beat to their symphony of lust. All Thorax could do was hold on for the ride for as long as he could, though that quickly became a losing battle as the alicorn began to pick up the pace. His balls screamed at him for release, begged him to let loose their fertile loads straight into the mare's bowels, but still he tried to hang on.

“Oh yeah….” Luna closed her eyes as Thorax’s balls pulled towards his body, one hoof holding herself up as the other attacked her marehood. “Come on, don't hold back. Give it to me! It’s been way too long!”

Thorax clenched his eyes shut. Well, if that was what the princess wanted, then who was say no? So, with a last-second surge of strength, he brought his hooves to the alicorn’s waist and slammed his hips up into her ass. The resulting slap and gasp were enough to will him on further, and as he hammered himself against the plush mounds of Luna’s plot he found himself suddenly in control.

“Oh!” Luna arched her back as he sunk balls-deep inside her backdoor, the flowing hairs of her tail tickling the top of his balls. “Oh, Thorax!” The hoof between her legs became a blur, the slick juices leaking from her marehood splattering against Thorax’s stomach. “I’m… I’m… ooohhh!”

With a final, Equestria-shattering thrust Thorax buried himself beneath the alicorn’s tail for the last time, just in time for the princess to scream his name towards the ceiling in bliss. The silken walls wrapped around his member suddenly closed around it like a vice, holding him in place as she rode out the waves of her orgasm. The constrictions were too much for him to handle, and with a loud groan he began depositing his seed deep into the alicorn’s bowels. His cock flexed in joy with each blast it fired into the pony's ass, the slick fluids quickly filling the alicorn to the brim. Each time he thought he could give no more, however, the pony seemed to milk another surge from his balls, and before long he felt warm lines of his cum start to seep over the curves of his sac.

“Phew....” Luna looked down at Thorax as her climax came to a shuddering end, her lips curved into a half-devilish, half-exhausted grin. “Told you it would fit. You should never doubt the Alicorn of the Night!”

Thorax let himself go limp as his balls finally emptied, hooves falling from the alicorn’s waist as she laid down on top of him. “Yeah….” His cock, still buried beneath the pony’s tail, gave a happy little twitch as the last of his love leaked from its tip. Even then it did not soften, however—in fact, it seemed as hard as it had been before!

"Hmm...." Thorax hummed in thought. “Say, you think Celestia could take it up the ass as good as you?”

Luna smiled, her magic once again fondling the changeling's now-churning balls. “Well, Thorax, I guess there’s only one way to find out….”