Vampire Hunter D
Japanese novels written by Hideyuki Kikuchi and illustrated by Yoshitaka Amano since 1983.
“D wanders through a far-future post-nuclear Earth that combines elements of pulp genres: western, science fiction, horror, high fantasy, H. P. Lovecraftian mythos, folklore and occult science. The planet, once terrified by the elegant but cruel Nobles (vampires), ancient demons, mutants and their technological creations, is now slowly returning to a semblance of order and human control — thanks in part to the decadence that brought about the downfall of the vampire race, to the continued stubbornness of frontier dwellers and, to the rise of a caste of independent hunters-for-hire who eliminate supernatural threats.”
Read more here
Here, Monica. This is what it’s all about. Pretty good summary, Wiki.