Currently my favorite books series is Vampire Hunter D.
Started reading since May and still have a lot to go through!
My favorite aspect of it are the beautiful ilustrations by the talented Yoshitaka Amana.
And it has one of the most uniqie settings for a post apocalyptic story.
The author went all the to mix up scifi, western and gothic horror.
I do warn it can get kinda dark.
But every book give you a different setting, therr are even momements where D allies with vampires and some of them even have sympathetic motives?
Also there a lot of themes of human preserverance and hope.
If you are more familiar with the movies i do recomenr checking this one out.