Board Thread:Speculation House/@comment-11188061-20131114110913/@comment-67.67.196.199-20140221053735

Just a thought, but the line "It's your blood that's red like roses" could mean that the petals are passed genetically. We see a figure who is presumably summer in the intro, with petals. This suggests that the petals are on her mother's side. Adam also has petals. As he is a Faunus, and ruby is not, we can assume they have different fathers. Adam is ruby's half-brother, this is my conclusion.