Nightwalker or Vampire Knight, depends what your looking for, there are a few if you have a good mosey around.
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Rosario+Vampire Gakkou no Kaidan or Ghost Stories(in english) Pretear
Fushigi Yugi : The Mysterious Play , X TV , Angel Sanctuary , Witchblade and Vampire Knight .
"Kaicho WA Maid-sama!"
Inuyasha one of the best animes I have seen or are you looking for a different anime?
Osamu Tezuka