If you're looking for anime similar to Vampiyan Kids Pilot, you might like these titles.
Yuusuke was just a normal high school boy until the lovely, haloed, and naked Noelle fell upon him one fateful day. From that point on, his life changed in ways he could never fathom, especially when Noelle's family, people from the demon world, arrived. Now, while his house and perception of reality are steadily being transformed, other forces are working to prevent Noelle from achieving her goal of becoming an angel for Yuusuke by using robots, catgirls and UFOs! Can Noelle become a real angel before she's used as a pawn in someone else's plans?
Kousaburo Kuki is a no-nonsense man's man who's good with his fists, and with the ladies. Currently residing in the seedy underbelly of Paris, his best friends are prostitutes and his life seems uneventful -- that is, until a friend is brutally murdered and he finds himself entrapped in a twisted nightmare of conspiracies and creatures of the night known as vampires. With the CIA and other organizations after the woman he is sworn to protect, Kuki must risk his life to find the truth, lest he end up dead from a vampire's bite!
When human girl Akari Amano is rescued by vampire Sophie Twilight, it's love at first sight. Infatuation quickly turns to cohabitation as Sophie reluctantly welcomes Amano as her new roommate. Despite her vampire status, Sophie never attacks humans, instead ordering blood and anime merchandise online like any ordinary human shopper.
Mitsugu Bamba is a high school girl who is crazy about donating her blood, to the point that she feels compelled to visit a local blood bank despite the unfriendly nurse. One day, Mitsugu encounters a beautiful girl there who looks like she has come from overseas. The girl is so pale that she appears ready to faint. Instead, she suddenly starts trashing the blood bank. The girl then loses consciousness and so Mitsugu takes her home...