Now She's A Futa, Now I'm A Girl!?

Alex and Cassie didn't think anything of the old set of necklaces they found in the park. That is, until they woke up the next morning! Now, Alex is a girl, and Cassie is... well, she's not "technically" a boy, but she's got some large, prominent boy-ish features! Not only that, but Cassie's libido is insatiable, and Alex is the closest thing she can get her hands on!

This story contains gender swapping, as well as sex between a futanari and a male that turns into a female