Well, I will  start with my favorites animes and mangas:

 

✯ Kuroshitsuji:

(Black Butler) The history happens in England, in Vitorian age. Ciel Phantomhive, 12 years old and his butler, Sebastian Michaelis uncover several cases to ensure satisfaction of the queen. With the skills of his butler, Ciel go through various situations, ranging humor to the suspense. An excellent anime, I think >.<

 

 

 

 

 

✯ Diabolik Lovers:

 

 Yui Komori arrives in the new mysterius house and meet six vampire  brothers: Shu, Reiji, Raito, Kanato, Ayato and Subaru. Even being brothers, they have differents personality and our heroine tries to live peacefully with them and meets secrets and mysterious facts.

 

 

 

✯Vampire Knight:

 

The history starts in Cross Academy, a private college which has the Day Class, when human people study and the Night Class, when vampires study. For bring peace between these two creatures, Cross Yuki and Kiryuu Zero are guardians and care for the secret of Night Class be safe. Zero hates vampires and is a vampire hunter and Yuki was saved by Kuran Kaname, leader from the Night Class and like vampires. She tries make Zero see the vampires´ good side, but will she did it?