“I guess it’s me first.” Caroline said.
“Now remember,” Topaz said, “the transformation requires sexual contact. I hope that’s okay.”
“It’s fine… well, at least I doubt Neil would mind the two of us making out as much as I would, you and him.” Caroline says as she strips down to her bikini top and enters the pool.
“Right.” You say without thinking.
Caroline glares at you before her chin is taken by Topaz, who turns Caroline’s head toward her and presses her lips against hers. Caroline returns the kiss and is clearly enjoying it. Topaz then dives underwater and begins orally pleasuring Caroline. You can only assume it’s to quicken the transformation.
Caroline moans with pleasure as she realizes the transformation has already begun. The skin of her legs had fused together and orange scales were already forming. The bones in her legs and feet were dissolving as the muscles rearranged themselves and attached to her elongating tailbone traveling down the length of her tail. As it reached the end, it split off and a large caudal fin flared out.
Topaz surfaces and Caroline floats on her back with her tail sticking out of the pool to get a good look at it. “It’s beautiful!” Caroline says. “I couldn’t have asked for a better mermaid tail.”
“You’re welcome.” Topaz says.
“Okay, my turn.” An eager Neil says.