TDLFFPP (even that is a handful to write) is the sequel to The Strangely Beautiful Tale of Miss Percy Parker (reviewed HERE). It continues on immediately following the events of the first book.
I really liked Strangely Beautiful and while I didn't enjoy it as much I still really liked Darkly Luminous. I thought the plot was slow in this one, but there is just something so lovely about how Hieber creates the world of Percy and The Guard. I find myself sinking into it so easily. Everything is easy to imagine and feels so clearly realized and vivid that it's easy to slip right into their world.
As I said, not much seemed to happen in the book, the characters spend most of the book waiting for something to happen, but the characters are so well realized that reading about them waiting is still really enjoyable. I liked spending more time with The Guard and watching them work out their problems. Rebecca, in particular. It takes skill to write a character who is jealous of the heroine and in love with the hero, but who is also sympathetic and never petty. We expect the guard to be noble and watching them balance their extreme responsibility with their human weaknesses was what kept me reading.
I find these are complicated books to try and explain to someone, especially without ruining the story. If you are interested in reworkings of Greek Mythology or just want to try something different them I'd recommend this series. I'm not even sure what to compare it to, but I know that I've definitely enjoyed them and I'll be reading more of Leanna Renee Hieber's work.
Unique and interesting characters will keep you reading
Themes of Eternal love, mostly implied romance/sex