Board Thread:Off Topic/@comment-216.228.42.176-20130710040445/@comment-96.241.24.119-20140701203331

Here's a guess: Ruby and Yang are half sisters, Ruby's out for revenge on the Grimm, and Yang is tracking down the woman she believes could be her real mother.

Summer, Ruby's mother, died while trying to fend off a pack of Grimm, leaving Ruby devastated. Ruby thus sought to become a huntress, ostensibly to help those who can't help themselves, but with a hidden agenda to exterminate the Grimm and avenge her fallen mother.

Meanwhile, Yang soon found out that Summer wasn't her real mother, so she went on a personal investigation of her own that led to a woman known as the Transient Princess. What better way to catch up to the woman who could give her some answers, she decided, than to become a huntress herself?