Jasper laid on the floor of the cottage, panting, bracing himself for the next step. Would he grow fur? Hooves? A tail? But the churning inside him slowed to a stop. He looked at Anya, confused. Anya inspected her nails idly.
"A transformation such as yours requires multiple steps," she said, sounding bored. "And they must be spaced out over roughly a week. Otherwise, it will not take, and your body will revert back to what it originally was. As it is, that is a risk, so I intend to do all I can to keep my hard work from being a waste."
"How long am I to be stuck as this?" Jasper asked. Anya shrugged.
"The first step needs two days to set properly. Once the two days have passed, I can move on." Anya pulled Jasper to his feet. He stumbled, unused to the weight of his udder. Helpless, all he could do was follow Anya as she led him outside into a small paddock. "This is where you will live, both during the transformation and after. My aunt has need of a dairy cow. Milk is crucial for many magics."
There was a small shed at the back of the paddock. Anya brought Jasper into it. The shed contained a large open space and a cow-sized stall. Jasper was thrown into the stall by Anya, who smiled at him.
"I will come fetch you in the morning. Good night!"
The night Jasper spent in the stall was horrible. He discovered he not only lacked control over his bladder, but his bowels as well, when they evacuated without warning onto the straw covering the stall floor. It was difficult to find a comfortable position to sleep in, but he managed to get a few hours before Anya returned. With...a bucket?
"Come on, Jasper," Anya said impatiently. She opened the stall and pulled Jasper up. Jasper gasped in pain. His udder was horrifically engorged. He looked down at it in shock, but Anya rolled her eyes. "That's what I'm here to help you with."
Anya led Jasper into the open area of the shed. She instructed him to stand still, then sat upon a stool and began to tug on his teats. Jasper let out a moo of relief as milk shot from him into the bucket. As Anya continued milking him, he felt a shiver of sexual arousal. Anya paused. She snickered, then resumed milking. Once Jasper was drained, she set aside the stool and bucket of milk. She slid one of her fingers into Jasper's pussy. Jasper moaned in pleasure.
"Aw, did someone get horny from being milked?" Anya said mockingly. "Well, I was planning on doing this at some point. I might as well do it now." She removed her dress and snapped her fingers. Her womanhood transformed into a massive manhood. "You see, one way I can help to get the transformation to stick is by impregnating you. So, come on, Jasper. Let's make a baby. The first calf you bear shall be mine!"
Before Jasper could say or do anything, Anya had him pinned against the wall, his back to her. Presumably because the other way, his udder would get in the way. Jasper moaned in ecstasy as Anya slowly slid her cock into his pussy. The pleasure was indescribable. But before he came, Anya did, shooting her seed into him. She removed herself from him, returned to normal, and put her dress back on.
"Oh, you think you get to orgasm?" Anya asked at the disappointed look on Jasper's face. "Do you know how many times you came before I did and then left me to finish on my own?" She laughed. "I'll be back in a few hours to give you some food."
Anya left. Jasper slowly sat on the ground, trying to come to terms with what was happening to him.