Twilight discovers a new spell, and Fluttershy volunteers to help her test it. However, when the true effects of the spell turn out to be rather... unexpected, it leads to an afternoon that the two mares would never forget.

So, yeah... my first story, and it's clop. It's actually my first attempt at writing smut, so please give me suggestions on how I can improve in the future.

Cover art by sonjaarashi (I think)

Warning: Anthro, Futanari