I shook out my legs and flanks as I pulled myself from the floor. My centaur body was tall and thick with muscle, with the same chestnut fur I'd seen in my vision. I stood on four strong legs, decorated with white socks, and my tail swished behind me as I swayed my hips. In my sheath, my huge horse cock twitched, ready for a mare to impregnate.
My human torso had also changed, growing similarly thick with muscle. Huge, corded biceps bulged from mountainous shoulders. My hair was thick and dark, and a new beard left me rugged and wild. I ran my huge hands down my sides, feeling my thick obliques and chiseled abs flex under my strong, meaty fingers.
"How do you feel after your transformation, sir?" One of the girls asked. It was the one without the accent, the one who had stayed silent the entire time. I could see her eying my new, tall, intimidating body. She licked her lips. "Is there anything else we can do to... ease you?"
I looked down at her, a smirk playing on my lips. "I think there might be one thing."
"Oh, anything," the other girl purred. It sounded so goddamn sexy in her silky voice.
"I seem to be a little oily from the massage, still," I lied, not breaking eye contact with them. "Lick it off me."
They obeyed. The two girls practically launched themselves at me, clambering all over my sides as they licked every furry inch of me. One of them climbed up onto my centaur back and dragged her tongue over my sweaty, human skin. Her legs clamped down on my flanks hard as she began to grind her hips into my body. I felt her wet pussy gush into my fur.
Down below, the other girl had worked her way down from my chest and had finally reached my cock. She teased it out of its sheath and began suckling across the length. "Elise," she called. "Get down here."
"Yes, Ming-Yu," the girl without the accent replied and jumped down to assist. Soon I was assaulted by the pleasure of two mouths licking and fondling my huge shaft and balls. Ming-Yu wrapped her silky lips around my huge baseball testicles, fondling my sack with her dexterous tongue. Elise was even more forward and began deep-throating the huge shaft so far that their lips touched. They french-kissed each other around the huge girth of my cock, all the while massaging the dick with silky throat muscles and expertly pleasuring my balls. I was on the edge in no time.
My hips bucked as I panted and moaned. "Guh, I'm about- I'm about to cuuuuuum!" I roared as I let loose. Ming-Yu withdrew to watch the show, but surprisingly, Elise didn't move an inch. She stuck tight to my huge, spasming horse cock as it shot my huge load down her throat. She licked up any puddles of that musky, nasty horse cum with great gusto. Ming-Yu stared at her.
"We hope you enjoyed our service," Elise purred, as she sucked on her fingers. "Cum again soon."
Leaving behind the girls, I found myself trotting out of the spa. The second I crossed the threshold, I suddenly had a bout of vertigo. I looked down. That was strange, it suddenly felt as though my centaur body was out of place, but I knew I'd had it my whole life. What was I even doing near a spa, anyway? It's not like I could go into them, with my huge, equine half. Imagine that, a centaur in a spa. What a stupid thing to think. I laughed at such a silly thought and walked away.
[Ming-Yu stared down at Elise in horror. She dragged the girl to her feet. "What were you thinking? You know what happens if someone ingests their cum!"
Elise just sighed happily and licked the last glob off her fingers. "Oh, I know," she replied. "But he doesn't."]