As Jen and Aubrey sat on the toilet Jen looked down at what was technically her vagina. She was supposed to be Aubrey's vagina and sex system, yet she still had her own vagina. And yet something was telling her this wouldn't last. If the changes she had already gone through were any indication, Jen was going to be a walking sex system pretty much. At this point... she didn't mind. But she wanted the changes to be over with so she and Aubrey could get on with life.
Almost as if responding to her wish the tingling started again, Jen looking down at her vagina as it sealed shut, making her crotch a blank bit of flesh as Jen lifted at her breasts. Seconds later her nipples shrank into her chest, leaving her breasts bare as she realized what just happened. Her breasts had become Ovaries. And with the loss of her vagina that meant she only had one hole left to use as a vagina.
Aubrey as getting off the toilet as Jen sighed and accepted the changes, closing her eyes as her mouth slowly changes positions, going from horizontal to vertical as her teeth dissapeared. Strangely her tongue was still in her mouth vagina but it's sensitivity had increased, leaving Jen to guess it was both a cilt and a tongue. Jen's nose made one final wiggle before shrinking into her face, leaving extra room for her vagina mouth as Aubrey got her clothes on, but Jen remained naked as her changes finished. It was official, she was now Aubrey's living vagina, and sex system.