 If you liked
JoJo no Kimyou na Bouken Part 1: Phantom Blood
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 ...then you might like
Vampire Hunter D
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These two manga series are filled to the brim with everything that's related to vampirism. Pivotal element of each story, even though both of them differ from each other a lot in many ways, is vampires themselves, presented as a threat to humanity and overall righteousness. They also offer graphic, but a rational amount of gore and horror elements, so that kind of scenes can appear without distracting the readers from the main storyline.