You are the sibling of Jonathan Joestar, and you have repeatedly noticed how Dio ruined his life. But fortunately Dio didn’t care about you at all, because you are the youngest in the family. From the moment Dio arrived, you realized that this would not lead to good. Neither you or Jonathan aren't trying to tell your father about Dio's behavior, he literally won't listen to you

You were in the library reading a book when suddenly you heard a dull knock from another room. Then swearing and a lot of screaming is heard...