Pretty much just a fun smutty romp if you're into a dark antihero. (As a heads up though, this book is primarily just a lot of teasing- not much actual Action if you get my drift.) The dark prince is, in fact, largely a bad person and does some pretty fucked up things to confirm to the MC that that is his true self. For me personally, I preferred that over books that show a bad-guy-turned-good... sometimes it's fine for bad people to just know themselves as bad people! It happens! I do appreciate though that the author regularly emphasized that consent would still be required for actually serious physical action. Even bad guys respect consent!

I found the MC a little exhausting, but the world building and the plot's main mystery kept me hooked, even if I initially started as an ironic read.