Diabolik Lovers (Fanfiction)Yui's Sister

What if Yui didn't know that her father adopted a child without telling her she had a step sister,but the real question is will Yui accept her sister if she knew the truth about her? and will the Sakamaki's and Mukami's heal her broken and cold heart if they know her past?And will Yuri still accept them if she know th...