Cheryl said dreamfully: "I want to be a mermaid."
Tiffany pressed a few buttons and as soon she was done, it happened.
First thing Cheryl noticed was her now waistlong blonde hair. Still aroused, she began fondling her breasts. Strange enough, they seemed to grow while she caressed her nipples. She felt a pulling sensation at her spine, as a numb formed and started to grow slowly. Now noticing the changes, she stopped touching herself. Looking down her body, she saw that her breasts had grown from c to d-cup size. Between her legs she saw her growing tail. She touched it and it felt so good. Warm and alive. The skin felt like it was covered with thousands of bumps. The tail continued growing, and soon Cheryl discovered that those bumbs were scales. Her legs felt weak and she noticed that they had become thinner. She laid down in the floor. As the tail grew and grew the scales changed their colour from skin to a silvery blue. Her legs began to retreat into her hips, her feet forming pelvic fins. The tail got thicker, her Vagina and asshole moving down to the fins. She flexed her tail as it grew almost two meters long. The end of the tail formed a beautiful fluke. The scales grew all over her tail, covering it in silverblue. She moved her now webbed fingers down to her vagina. Nearing its end, the change urged her to masturbate, caressing her scaly skin, fondling her breasts. A dorsal fin grew, starting at her waist and the tail almost down to the fluke. Reaching her orgasm, she could no longer braethe air. Three slits opened on her ribcage, housing her newly formed gills. Tiffany pressed more buttons that teleported Cheryl to their swimming-pool. After that she...