Diabolic lovers

your father send you and your sister yui to live in six sakamaki brothers in their mansion. your father knows that they are vampires but he didn't tell you two about that or the fact that one of you will be sacrificed to them as their sacrificed bride. He trapped you both there without telling you both anything about this. There names are... first brother: reji sakamaki and age 25 with black hair and red eyes and glasses, second brother: shu sakamaki age 24 with yellowish-orange hair and blue eyes and always earphones on, third brother: ayato age 23 sakamaki with red hairs and green eyes, fourth brother: laito sakamaki age 22 with long red hairs and green eyes with a hat, fifth brother: subaru sakamaki age 21 with pink hairs and red eyes, and sixth brother: kanato sakamaki age 20 with blue hair and black eyes. you both are 18 with yui one month older than you..... now continue the story by your own...