If you enjoyed 'Indecent' for its raw, unfiltered exploration of human desires and societal taboos, I'd strongly recommend 'The Lover' by Marguerite Duras. It’s a semi-autobiographical novel that dives into a controversial relationship with the same lyrical intensity and emotional honesty. Duras doesn’t shy away from discomfort, much like 'Indecent,' and her prose feels like a slow burn—achingly beautiful but never sentimental.
Another pick would be 'Tampa' by Alissa Nutting, which tackles morally fraught subject matter with a similarly unflinching gaze. It’s polarizing, yes, but if you appreciated 'Indecent' for its willingness to provoke, this might resonate. For something more surreal yet equally boundary-pushing, 'Earthlings' by Sayaka Murata is a wild ride blending body horror and social critique in a way that lingers long after the last page.