Vampire's Testament(2004)

Kyuuketsuki no Yuigon

Jake is a son of a well-known person and a maid who work in his father's house.
Because of it all relatives despised him and made him live outside in a filthy surounding.
After the death of his mother and years straying outside, he came back to the family.
No one of his relative wlecome him warmly except from Arthur, his cousin.
They always lived together, fell in love and until suddenly something happened to Arthur.