It was the dead of night at a time when most people were fast asleep. Buttercup wasn't however, instead she was floating through the skies of Townsville towards Princess' mansion. For the last little while she had been in a relationship with her enemy, one meant to satisfy some particular desires they both had.
Buttercup floated up to Princess' bedroom window and was letting ready to stop the S&M session.

And what is Buttercup's role in their session?