I loved the multiversal travel in The Space Between Worlds. I love how Micaiah Johnson describes how both scientists and religious people viewed the new technology. Over the course of the book, the reader discovers more and more and that had me intrigued. I loved the sapphic element, though I wished it was present more (though the book makes clear why). The characters were very well rounded and felt like real people to me.

If you're looking for a good science fiction with a multiverse element, I would really recommend The Space Between Worlds to you.