Of course it does! It's magic after all!

Riley felt surprisingly good after ingesting Blair's magical semen, which quenched his thirst for quite a while, the first day after it was also good. But that changed when the other days started being completely miserable, he ached everywhere and he could actually feel a deep burning fire in his loins that felt like arousal and yet not, like a nagging feeling of being empty. As the days passed, he actually considered visiting her in order to check if his health wasn't being threatened by anything, but the red eyed boy failed didn't, as the changes to his body were beginning to get drastic.

"What. Is. This?!"

He could simply not believe it, exactly one week after his last meeting with Blair, he woke up dead in the earliest minutes of the dusk, not wanting to lose time at all and he's surprised by one last big transformation on his body. He had breasts. Not exactly as big as Blair's, but he could feel them, more closer to budding ones than anything and judging how his nipples were engorged and the areolas around them were bigger, he was sure he developed mammaries over the course of a week. But it wasn't just his chest that felt different, he had a whole new center of gravity, not due to his usual wide hips, but also how his hips were now wider than his shoulders, with his expansive asscheeks following suit, it felt weird to walk like this.

He never had a sway to his hip movement, now it seemed ****, as if he always walked like this, it felt vulgar and the more his thoughts warped around his situation, Blair and her magical penis were dead center on them, with them being the reason of his transformation. After managing to put on a long flowing maroon dress over his body, which clung to his new expanded curves, much to his chagrin and flew towards the witch's lair, not bothering if she was home or not. He arrived rather quickly, and wasn't being quiet, huffing and grumbling in annoyance as he walked down the house, only to hear something that shook him to his core, a moan, and a familiar one at that.

"FUCKING HELL! YOU HOLSTAURS ARE SUCH GOOD BREEDING BITCHES! I'M LUCKY TO HAVE FUCKED YOU INTO BECOMING ONE!"

The vampire was curious about that phrasing, but he knew that Blair was up to something, so when he spied on her, he was shocked. The comparatively smaller witch was dominating someone two - no - three times her size with relative ease, not breaking a sweat, the red eyes of the shocked and out of view boy were simply glued on how the creature before her was getting pounded so hard. It looked like a normal holstaur, aside from the height, which she looked to be as tall as a minotaur, and have muscles that while lean, were defined enough to be attractive.

As the grunts and moans echoed across the room, Riley continued to look and stay slack-jawed, mesmerized by the scene unfolding in front of him, with his cock slowly tenting on his dress, making him shiver in pure delight, but as he continued to look down, he noticed something weird, did the holstaur had a... Dick?! A shaft that was mildly recognizable to the vampire, with it having a particular birthmark that he was certain it belonged to a certain creature...What's happening here?!

"You are a good bitch aren't you? Moo for me and I'll give you enough cum for you to get pregnant again! You DELICIOUS BREEDING COW!"

The room went silent, with only the cow like minotaur's sob like moans being heard, which quickly changed as another sound happened, the sound of Blair's load being deposited inside of the holstaur, with each pulse of her balls releasing a torrent of cum so strongly that the feminized boy could make out how many ropes she shot into the womb that awaited for her. And that whole display of intense climax was followed by the impregnated woman's own large horse like cock started uselessly spewing her load all over the floor, all of this commotion lasting for several minutes.

"This was delightful... Atleast this should calm me for... 6 hours, if my theories are correct. I need to work on the counter potion soon. Oh, hey Riley. You're here for our checkup?"

"What was that Blair? I'm speechless."

"Oh, that was my minoutaur familiar. Remember him? I transformed him and made him my premier breeding cow, same thing for the others too."

"How you managed to achieve that?! This is crazy Blair! Like... I was going to tell you about my changes and now I come here and you're fucking your own monsters?!"

"Says the guy who would be willing to kneel right now and clean me off. Or the same guy whom sucked my minotaur before?"

"... That doesn't matter! And what do you mean turned them? Are you capable of doing that now?!"

"Uhum, yeah, I discovered that after I read the spell, before you've left, but you haven't changed much..."

"I haven't changed much?! My hips and backside are twice as larger and I have grown actual breasts?! This is some insane succubi-like magic!"

Riley acted on impulse, unknowingly filled by his arousal and... Other deep ingrained feeling to please Blair, quickly shedding the upper half of his dress and showing his budding breasts to his redhead witch friend, to which she could only widen her eyes at such a surprise, while her cock, that it was still hard, managed to get even harder.

"Your transformation seems incomplete... Why though?"

"Must be all the time I spent around you, I guess something good finally came out of this friendship."

As much as the vampire boy wanted to continue venting his frustrations, he froze in the spot, feeling his long time friend simply oogle his newly grown mammaries with such intensity that actually not only made him blush, but also made him feel hot and bothered, with his arousal not only focusing on his cock, but also seemingly inside of him, which made him shift still.