It's been seven years since the first time the two of them had relations. Despite how unattractive the rest of Equestria typically sees her, Moondancer has always thought of her older sister as "beautifully unique". In fact, once she started learning about sex, who else would she want to share it with besides her beloved sister?

What could possibly go wrong...?

Contains two broken mares who are trying to put the pieces back together now that the glue that connected them has disappeared forever.

Written for the Wincest Winter of Worldbuilding contest