I’ve been trying to find a story I read years ago with no luck so far.
I can’t remember a lot of details, but the main character ends up on an alien planet that’s regressed technologically due to war. The aliens have “cat” features (ears/tail), and have nanobots in their blood that build up until they “go into heat and mate or die”, which is the whole point of the main character being there.
(It isn’t the Taken/Harvest series, but it’s possible I’m conflating the two slightly)
I remember it being one of my favorite stories back in the day but for the life of me I can’t remember the title/author. It was either on here or literotica iirc.
Thanks for the help if anyone remembers it!