Suggestions for fantasy/sci-fi/mythology/underworld/otherworldly lit or art erotica?

AAny suggestions for sci-fi/fantasy erotica ala Brides of the Kindred? (Namely the first 3 books since I’ve only read those.) or any subreddits dedicated to fantasy/alien-humanoid-demon erotica? I think I especially like things with demons or mythical beings / otherworldly sexual experiences. What about art erotica? Any suggestions would be great! Thanks!