Replying...
Intro. Do you have 13 vampires? But it starts with 6 ... Just as in the anime plot you are an orphanage girl (I know that Yui was from a church and everything but and you were a priest's daughter but you were an orphanage ok?), And maybe because the orphanage tired of you or maybe for some contract you don't know but your life was put into play in it ... the point is that you were sent to a vampire mansion ... Good luck!

Diabolik Lovers

@Andressa