The Alchemy of Unbidden Desire [WM]

Nefer panted as she looked down at her own engorged, throbbing length. "Y-Your right... I've heard of a futanari before..." She started. "It's a woman with a cock and balls. And now... we are both one of them." With one particular throb of her cock, it bounced up into the air, and a pearly string of her pre flicked from her tip and arced through the air, landing on the ground.

Her teeth bit hesitantly into her bottom lip as she tried to keep herself composed, although ‘keeping her composure’ is just one step away from wrapping both of her hands around her cock and beating it until she creams all over the room.

She didn't want a cock - didn't know she wanted a cock - but now that she had one, she couldn't help but think of all the things she could do with it. Hells, all the ways she could use it on Lily... And all these new feelings and thoughts running through her head, they were a result of her new cock, right? They had to be. She wrapped her hand around it, gasping from the simple touch and the pleasure it provided. "Gods, it's sensitive!~"

And, despite her mind being foggy and lust filled with lewd thoughts, Nefer lifted the third potion from her shirt pocket and offered it to Lily. "Well, want to find out what this one does, too?~" She asked, her tone lustful and hungry.

She looked at the glowing vial in her sister's hand, the pale lighting reflecting off the swirling glowing green fluid within. Had her thoughts been rational, she would have hesitated, having already experienced one unforeseen transformation. As her new cock continued so slowly leak onto the couch however, her clouded mind could focus only on how good it felt and how sensitive everything was.

She slowly reached down and cupped a hand beneath her cock, a whimper escaping her lips as she lifted it, her balls churning as she stood up. In her haze of lust, as well as because of her mischievous nature, she couldn't resist the temptation to try another potion. She wrapped her fingers around the vial and took it while pulling out the cork. She licked her lips and drank the contents.

Almost immediately, Lily felt a pleasant sensation course through her body, almost like she was getting a good stretch. She felt her skin tingle from every pore as she grunted and chuckled as she felt it building. As the feeling spread, she felt her outfit growing rapidly tighter against her, when suddenly it began to tear and burst all over at the seams. She stumbled forward and caught herself on the fireplace as her moans became slightly deeper and carried a rich feminine vibration. She swelled towards the ceiling, thankful for the vaunted room. After a few more seconds she towered over her sister, her cock swinging heavily next to her.

Her mind cleared slightly as she chuckled mischievously, "Holy shit. Now that's a potion! Tell me you've got more of those lying around!"