Darkness (male Sith reader x RWBY)

You are a faunus and the adopted brother of Yang and Ruby you live a happy life however your family was attack by thugs and White Fangs you don't know why but something told you to leave to save your family you leave your family and days later the thing came back but this time it show you vision of death and despair of your family getting Killed and worse you want to end the visions the thing soon turn into a person and said he's your farther and can train you in the ways of the dark side of the force you agree with training you will become a member of the Sith. You are a Sith your birth mother is Sienna Khan but your birth father is Darth Nihilus beware enemies because (Y/n) coming for you.