@JoscelynTransient The Spy and Her Serpent is a T4T sapphic novel. technically polyam, but other partners of one of the protagonists are only mentioned and the other doesn't have other partners at the point of the story. it's the second in a two part series, but can be read standalone. the first one features polyamory more directly but not trans protagonists (also kinda toxic/problematic relationship dynamics just as a warning if you don't want to see that).