Board Thread:Speculation House/@comment-4830106-20131108040231/@comment-10390252-20140107172911

@XDex,

If Jaune's father was a Hunter or involved in the non-Hunter security forces in some way (maybe the regular military), then Jaune's parents may have known Yang and Ruby's parents. Either one of them could have said the key phrase that was then passed on to the other pair's children.

Why did Ruby not know Jaune on sight? Just because her parents knew his parents way-back-when, it doesn't mean that they kept in contact with each other.