Clopfic Idea · 7:31pm Aug 25th, 2015
For those of you who didn't know, Twilight Sparkle Gets a Physical was inspired by the first issue of an erotic manga called Hot Tails. Specifically, the first segment called "The Girl With Something Special".
Now on to my idea. This one is also inspired from that issue, but the segment involved twins and this story will involve the spa ponies and a client. I'm not going to go into too much detail on that, but kudos if you've already that issue. No spoilers!
So I guess you could consider this a spin-off to TSGaP.