You and Yui went to a place where your father told you and Yui to live there but your father trapped you and Yui it turned out that your father sacrificed you and Yui became the prey of vampires named Ayato sakamaki,Shu sakimaki, Laito sakamaki,Kanato sakamaki,Subaru sakamaki and Reji sakamaki. Yui is terrified when you and yui found out they were vampires, you however, protected her Laito:well well well who do we got here?~ two delicious human Girls~ Ayato: I agree brother~