A thousand years ago, a series of popular bodice-rippers were published by a mysterious writer who wrote under the nom de plume of 'Gibbous Eclaire'. Books in the series ended rather suddenly, and what exactly had happened became one of Equestria's many mysteries.
Meanwhile, in the modern day, a burnt-out Luna frets over palace paperwork, and looks fondly at a spare inkpot and a pair of crossed quills.
(Tagged teen for innuendo and implicit writing: altered as per community guidelines)