User blog comment:Samuelshadow16/Are Ruby and Yang Blood Related/@comment-98.127.74.142-20140706175704

I'm just as confused as you are. Mr. Oum once said that Yang and Ruby weren't related, but then suddenly he said that they were indeed related, but they weren't cousins, step-sisters, nor were they adopted. That was confusing that Oum would suddenly change his mind about that, but don't we all?

As of right now, I believe Yang and Ruby are half-sisters, sharing the same mother but have different fathers. Possibly that, or they're full sisters, and they just bare a striking resemblance to one of their parents. Also, they could be using different last names for personal reasons, like for example in Naruto when Naruto had his mother's (Kushina) surname, Uzumaki, while he didn't have his father's (Minato) surname, Namikaze due to the fact that Naruto's father had many enemies. For their appearances, sometimes siblings don't look anything like each other, and I think you all know that very well. Also another example from Naruto is Hinata and Hanabi Hyuga, who both look nothing like each other. Hinata looks and acts more like their mother (who is unnamed) and Hanabi looks and somewhat acts more like their father, Hiashi (although we don't know much about her either). Even though we don't know anything about Yang and Ruby's parents, I think they both act and look like one of their parents, but we'll have to wait and see.