If you want erotic books here are a few: Any of Eden's Lewd Saga series are right up there. Alpha World does have harem elements, it isn't explicit though, it goes fade to black. My other new book Apocalypse Gates, if you get the Author's Cut, doesn't fade to black. The PG-16 editions fades to black though. Wild Wastes by Randi Darren. Daniel Black by William Brown Alara Branwen has a couple of books out I believe, just can't name them right now.