Mark picked up the vial he always been a fan of unicorns how they were majestic and magical and that they were horses which it was his first favorite animal. He soon gulped the whole liquid and soon waited he soon felt a pain it was like a headache but worst he thought he had a fever by drinking that liquid and checked his head only to feel a poke from where his forehead is as he touched it more it was getting longer and longer he soon saw that he grew a horn, he admired it until he felt a tingly feeling coming from his penis he looked down only to see it was shrinking until there was nothing left but a vagina he is now becoming a her. She touched it and soon felt the sensation she didn’t know it right away but her skin began to become very pale almost white and her hair soon became a volley of rainbow colors her neck and face soon began to extend as a line of rainbow hair began flowing throughout her neck, she soon noticed a feeling with his but as it grew bigger which soon sprouted a rainbow colored tail, and her feet soon began to transform into hooves. She now had the qualities of a female anthro unicorn except 1 thing her breasts she was sad she didn’t have the full package and wished she had it then soon her horn began to glow, she was shocked as her flat breasted chest soon started to form mounds as it soon began to swell up to grow into DDD size. She was ecstatic and soon cup the breast which gave her the feeling of happiness. She enjoyed every second of it. After she looked at the crate and chose which vial to drink.