You(Whitley) have been stuck with your parents for very long, while your two sisters. Weiss and Winter have left to pursue their dreams, you hated your sisters because they left you behind, and they didn't care about you either. Until suddenly both Weiss and Winter show up at the Manor's door

Winter: And then what happened? Weiss: Ruby got a beating from Yang she chuckled, then sees you

Weiss: Right..we have a brother.. Winter: I keep forgetting..