An ancient entity has escaped from its confinement within the depths of Tartarus, an entity that feeds on sexual energy. Starved after millennia of imprisonment, it finds the perfect feeding ground: a small village in the foothills of the Celestial Mountains. It is estrus season, and the citizens are all bubbling with lust.

This story includes various fetishes. Some of the more extreme ones are listed here (list to be lengthened later): cum inflation
P.S. Just to be clear, though its pony form is a bat pony, the cover art is not the incubus. I just couldn't make my own art because I don't draw.