When I was making the list above, I actually went and looked at my bookshelf of ancient sci-fi paperbacks. C.S. Lewis’ Space Trilogy is a nominally “science fiction” work that I excluded and would consider soft sci-fi. It’s set in space with aliens, but is really a fantastic story (in this case an allegory) that makes basically no attempt to extrapolate or connect with hard science as we understand it today.
A funny one is the Pern series, which starts out as a sword and dragon fantasy series, but then like 10 books in we find out it is actually hard sci-fi (!) with space ships, orbits, genetic engineering, computers, etc. But there is still that telepathic connection with the dragons…
A funny one is the Pern series, which starts out as a sword and dragon fantasy series, but then like 10 books in we find out it is actually hard sci-fi (!) with space ships, orbits, genetic engineering, computers, etc. But there is still that telepathic connection with the dragons…