Complex sentence: They are erotic BDSM novels set in a medieval fantasy world, loosely based on the fairy tale of "Sleeping Beauty", and describe explicit sexual adventures of the female protagonist Beauty and the male characters Alexi, Tristan and Laurent.
Split into simpler sentences: They are erotic BDSM novels set in a medieval fantasy world, loosely based on the fairy tale of "Sleeping Beauty". The novels describe explicit sexual adventures of the female protagonist Beauty and the male characters Alexi, Tristan and Laurent.